CN103903058A

CN103903058A - Assessment method of efficient operation of intelligent power distribution network

Info

Publication number: CN103903058A
Application number: CN201210576798.5A
Authority: CN
Inventors: 崔艳妍; 刘苑红; 陈楷; 龙禹; 刘伟; 马丽; 倪炜; 杨林; 李子韵; 王自桢; 陈海; 周莉梅; 苏剑
Original assignee: State Grid Corp of China SGCC; China Electric Power Research Institute Co Ltd CEPRI; State Grid Jiangsu Electric Power Co Ltd; Nanjing Power Supply Co of Jiangsu Electric Power Co
Current assignee: State Grid Corp of China SGCC; China Electric Power Research Institute Co Ltd CEPRI; State Grid Jiangsu Electric Power Co Ltd; Nanjing Power Supply Co of Jiangsu Electric Power Co
Priority date: 2012-12-26
Filing date: 2012-12-26
Publication date: 2014-07-02
Also published as: WO2014101278A2

Abstract

The invention relates to an assessment method of efficient operation of an intelligent power distribution network. The assessment method comprises the steps of: (1) determining boundary conditions; (2) determining service objects; (3) building an assessment index system which includes a power distribution network safety index, a power distribution network reliability index, a power distribution network economical efficiency index, a power distribution network high operation quality index and a power distribution network intelligence index; (4) determining assessment index numerical values of single items; (5) scoring for single items of assessment indexes; (6) performing comprehensive scoring of the assessment index system; and (7) judging whether efficient operation of the power distribution network is achieved according to a comprehensive score of the assessment index system in Step (6). The assessment method for efficient operation of the intelligent power distribution network in the invention has a relatively wide range of application, can comprehensively assess the operating state of the intelligent power distribution network, and an assessment result provides an importance basis for decision-making work of power grid dispatching, planning and operation management personnel.

Description

A kind of intelligent power distribution web, high efficiency operation appraisal procedure

Technical field

The present invention relates to the appraisal procedure of intelligent distribution network analysis field, be specifically related to a kind of intelligent power distribution web, high efficiency operation appraisal procedure.

Background technology

Intelligent grid is a complexity, great system engineering, and the practice of intelligent grid is at present worldwide still in the starting stage, the assessment intelligent grid comprehensive benefit of overall scientific, find in time the deficiency in intelligent grid Construction and operation, realize technology and economic balanced development in intelligent grid construction, there is Great significance for the planning of accurate instruction intelligent grid, construction, operation, management.On the one hand, intelligent grid is upgrading and the transformation on traditional electrical network basis, and it has possessed all functions of traditional electrical network; On the other hand, intelligent grid has embodied again advanced IT application, robotization, the new feature such as interactive, greatly promotes and expanded the various functions of traditional electrical network.Therefore, in the intelligent grid appraisal procedure system of science, the correct assessment to traditional electrical network function should be kept, technical characterstic and the functional attributes of intelligent grid self will be reflected simultaneously comprehensively.

At present, intelligent grid construction has obtained certain achievement, somely also begins to take shape taking intelligent adapted electricity as the Demonstration Garden of representative.Can help the clearly current residing stage of operation of power networks of electric power enterprise to the assessment of intelligent power distribution network operation high efficiency, find out gap and developing direction with target, can also weigh electric power enterprise in the progress obtaining aspect operation intelligent distribution network simultaneously, it can be by the efficient operation level that provides one group of Key Performance Indicator to pass judgment on intelligent distribution network, for effective dispatching of power netwoks provides important support.According to above-mentioned analysis, the necessity of intelligent power distribution web, high efficiency operation assessment can be summarized as two aspects: on the one hand, can follow the tracks of in time power distribution network operation conditions, the aspect that need to adjust while finding power distribution network operation, to take corrective action in time, make power distribution network keep efficient operation along correct direction; On the other hand, can be according to the developing characteristics of power distribution network self, understand and predict the operation conditions that it is following possible, to take measures early, instruct development construction object and the implementation content of intelligent distribution network operation aspect.China is carrying out extensive intelligent grid construction, is just needing effective efficient operation evaluation system to instruct construction and operation process.

Scientific research institution is carrying out extensive work aspect power distribution network assessment both at home and abroad at present, relate to power distribution network many aspects, but because intelligent distribution network is in the development construction period at present, not yet ripe, therefore also do not carry out specially the operation for intelligent power distribution web, high efficiency and carry out the special correlative study of assessing.Along with the lasting propelling of intelligent power distribution network construction process, and the progressively in-depth of practical operation, it is imperative that its running status is assessed, and therefore needs to build a kind of appraisal procedure that can conscientiously reflect the index system of intelligent distribution network operation level.

Summary of the invention

For the deficiencies in the prior art, the invention provides a kind of intelligent power distribution web, high efficiency operation appraisal procedure, intelligent power distribution web, high efficiency operation appraisal procedure of the present invention has the wider scope of application, running status that can comprehensive assessment intelligent distribution network, assessment result will provide important foundation for dispatching of power netwoks, planning and operational management personnel's decision-making work.

The object of the invention is to adopt following technical proposals to realize:

A kind of intelligent power distribution web, high efficiency operation appraisal procedure, its improvements are, described method comprises the steps:

(1) determine boundary condition; Before definite power distribution network operation evaluation index system, determine boundary condition; Described boundary condition is security, reliability, economy, quality and the intelligent unification that reaches power distribution network operation;

(2) clear and definite service object; Described service object refers to traffic department and the power distribution network operation aspect of electrical network;

(3) build evaluation index system; Described evaluation index system comprises security of distribution network index, distribution network reliability index, power distribution network economic index, power distribution network operation quality index and five indexs of the intelligent index of power distribution network;

(4) determine individual event evaluation index numerical value: calculate according to the implication of each individual event evaluation index, obtain the concrete numerical value of each individual event evaluation index;

(5) individual event evaluation index scoring:

Each individual event evaluation index numerical value step (4) being drawn according to the standards of grading of setting is converted to concrete score, and standards of grading refer to by scale system, the standardization form of the direct comparison that the numerical value of each individual event evaluation index is converted to; Scoring scale adopts centesimal system, ten point system or the five-grade marking system;

(6) evaluation index system comprehensive grading:

According to the superior and the subordinate between each individual event evaluation index and sane level relation and index weights, the concrete score weighting of each individual event evaluation index in step (5) is gathered, calculate the scoring of whole evaluation index system, appraisal result characterizes the efficient operation level of institute's assessment power distribution network; Utilize analytical hierarchy process successively upwards to calculate, until calculate the comprehensive grading of whole electrical network, the calculation expression of step analysis represents with following formula:

S = Σ_{j = 1}^{n} S_{j} W_{j}

In formula, the scoring of arbitrary non-bottom index in s representational level structure, n (n>=1) represents lower floor's index number of index s, s _jrepresent the index j of lower floor (scoring of 1≤j≤n), W _jrepresent the weight of the index j of lower floor; By the weighted sum of lower floor's index scoring and weight, calculate index comprehensive score;

(7) according to the evaluation index system comprehensive grading of step (6), judge whether power distribution network reaches efficient operation, according to the height judgement of comprehensive grading, be divided into four ranks, { power distribution network does not reach efficient service requirement; Power distribution network reaches efficient service requirement substantially; Power distribution network meets efficient service requirement preferably; Power distribution network is very well realized efficient operation }.

Wherein, in described step (3), security of distribution network refers to Supply Security, and power distribution network exits, loads at element and maintains the ability of continuous power supply in irregular variation situation; The safety indexes of described power distribution network comprises power distribution network loading condition index, turns for capacity index, anti-disaster ability index, adapts to distributed power source access capability index and coordination ability index;

Described loading condition index comprises high pressure capacity-load ratio, middle pressure capacity-load ratio, and 110kV, 35kV heavy duty main transformer accounting, 110kV, 35kV heavy-haul line accounting, middle pressure heavy-haul line accounting and middle ballast carry six individual event evaluation indexes of distribution transforming accounting;

The described confession capacity index that turns comprises that 110kV, 35kV meet N-1 main transformer accounting, and 110kV, 35kV meet N-1 circuit accounting, and middle pressure meets in N-1 circuit accounting and the N-1 of transformer station situation can turn four individual event evaluation indexes of confession load accounting;

Described anti-disaster ability index comprises that in disaster situation, (disaster refers to impact or may affect power system safety and stability operation or affect electric power (heating power) regular supply, disaster, the accident etc. that need to take Disposal Measures to be tackled.) power distribution network subtracts for load accounting and two individual event evaluation indexes of power distribution network customer interrupted accounting;

Described coordination ability index comprises individual event evaluation index of high pressure power transformation volume ratio.

Wherein, in described step (3), the ability of distribution network reliability confession under directions electric system to user's continued power; Described distribution network reliability index comprises Reliability Index, controller switching equipment reliability index and management and engineering reliability index;

Described Reliability Index comprises the average frequency of power cut of user, the average power off time of customer interrupted and three individual event evaluation indexes of power supply reliability;

Described controller switching equipment reliability index comprises overhead transmission line fault outage rate, cable line fault outage rate, transformer fault outage rate, circuit breaker failure outage rate and five individual event evaluation indexes of switchgear fault outage rate;

Described management and engineering reliability index comprise uninterrupted operation accounting and two individual event evaluation indexes of repair based on condition of component coverage rate.(repair based on condition of component is a kind of on the basis of equipment state assessment, arranges repair time and project according to equipment state and analyzing and diagnosing result, and the maintenance mode of initiatively implementing.）

Wherein, in described step (3), described power distribution network economic index comprises comprehensive economy index, builds economic index and three aspects of performance driving economy index;

Described comprehensive economy index comprises low and medium voltage distribution network line loss per unit, power distribution network peak-valley ratio and three individual event evaluation indexes of peak load duration accounting;

Described construction economic index comprises Unit Assets year electricity sales amount and two individual event evaluation indexes of maximum supply load of Unit Assets year;

Described performance driving economy index comprises 110kV, 35kV light-loaded circuit accounting, 110kV, 35kV underloading main transformer accounting, middle pressure light-loaded circuit accounting, middle pressure underloading distribution transforming accounting, the deviation of medium-voltage line load factor and economical operation load factor, the high circuit accounting of damaging of middle pressure, the high distribution transforming accounting of damaging of middle pressure, every ten thousand yuan of power grid asset operation and maintenance costs and nine individual event evaluation indexes of distributed power source generating efficiency.

Wherein, in described step (3), described power distribution network quality index comprises power quality index and quality power index;

Described power quality index comprises rate of qualified voltage, harmonic wave qualification rate and three individual event evaluation indexes of imbalance of three-phase voltage degree;

Reactive capability accounting that described quality power index comprises Power Quality Detection terminal coverage rate, automatism voltage control AGC is adjustable, meet customer power supply requirement accounting, the ability that meets customization electric power and client's industry expands five individual event evaluation indexes of service time limit compliance rate.

Wherein, in described step (3), the intelligent index of power distribution network comprises level of IT application index, automatization level index, the interactive index of power supply, user interaction index and Development and Harmony index;

Described level of IT application index comprises four individual event evaluation indexes of security of concertedness, distribution infosystem coverage and the distribution infosystem of distribution transforming information acquisition rate, distribution infosystem;

Described automatization level index comprises intelligent substation accounting, distribution power automation terminal coverage rate, distributing automation apparatus year available rate, distribution network line fault position success rate, distribution network failure isolation action accuracy, power distribution network network reconstruct action accuracy and protects fast seven individual event evaluation indexes of equipment rate;

The interactive index of described power supply comprises that (controlled distribution formula power supply refers to have the ability of carrying out two-way communication with dispatching of power netwoks mechanism, can realize the distributed power source of remote monitoring and control function for distributed power source access capacity accounting, controlled distribution formula power supply.) capacity accounting, distributed power source prediction deviation rate, energy storage system capacity accounting and the controlled accumulator system (accumulator system that controlled accumulator system refers to realize remote monitoring and controls function of exerting oneself.) five individual event evaluation indexes of capacity accounting;

Described user interaction index comprises that intelligent electric meter coverage rate, dynamic electricity price user accounting, electric automobile fill five the individual event evaluation indexes of capacity accounting that change electric facility density, adapt to microgrid access capability and controllable burden;

Described Development and Harmony index comprises regenerative resource access capacity accounting and two individual event evaluation indexes of environment compatibility.

Wherein, in described step (4), determine the numerical value of each individual event evaluation index in described security of distribution network index A, distribution network reliability index B, power distribution network economic index C, power distribution network operation quality index D and the intelligent index E of power distribution network.

Wherein, determine the numerical value of individual event evaluation index in described security of distribution network index A:

The numerical value of A1, six individual event evaluation indexes of loading condition index:

A1-1, high pressure capacity-load ratio: be a certain power supply area, the ratio of converting equipment total volume (kVA) and corresponding total load (kW), represents with following formula:

R_{S} = \frac{Σ S_{ei}}{P_{\max}};

Wherein: R _s-high pressure capacity-load ratio, unit is MVA/MW;

P _maxthe peak load of this electric pressure the whole network or service area;

∑ S _eitransforming plant main transformer capacity sum in-this electric pressure the whole network or service area;

A1-2, middle pressure capacity-load ratio: be assessment area substation transformer total volume and the ratio of corresponding middle pressure total load, that is:

Middle pressure capacity-load ratio=substation transformer total volume/middle pressure peak load;

A1-3,110kV, 35kV heavy duty main transformer accounting:

110kV, 35kV heavy duty main transformer refers to that 110kV, 35kV main transformer year maximum load rate meet or exceed 80% and lasting more than 2 hours;

110kV, 35kV heavy duty main transformer accounting=heavily loaded 110kV, 35kV main transformer number of units sum/110kV, total number of units × 100% of 35kV main transformer;

A1-4,110kV, 35kV heavy-haul line accounting:

110kV, 35kV heavy-haul line refer to that 110kV, 35kV circuit year maximum load rate meet or exceed 70% and lasting more than 1 hour;

110kV, 35kV heavy-haul line accounting=heavily loaded 110kV, 35kV number of lines sum/110kV, 35kV circuit total number × 100%;

A1-5, middle pressure heavy-haul line accounting:

Middle pressure heavy-haul line refer to medium-voltage line year maximum load rate meet or exceed 70% and continue more than 1 hour;

Middle pressure heavy-haul line accounting=heavily loaded medium-voltage line number sum/circuit total number × 100%;

A1-6, middle ballast carry distribution transforming accounting:

Middle ballast carries a distribution transforming assignment change year maximum load rate and meets or exceeds 80% and lasting more than 2 hours;

Middle ballast carries total number of units × 100% of distribution transforming accounting=heavily loaded distribution transforming number of units sum/distribution transforming;

A2, turn four individual event evaluation index numerical value for capacity index:

A2-1,110kV, 35kV meet N-1 main transformer accounting:

Definition: according to " urban power network planning and design directive/guide " Q/GDW156-2006, the main transformer number of units that meets main transformer N-1 safety criterion in assessment area accounts for the ratio of the total number of units of main transformer;

110kV, 35kV meet N-1 main transformer accounting=110kV, 35kV main transformer and meet total number of units × 100% of number of units sum/main transformer of N-1 safety criterion;

A2-2,110kV, 35kV meet N-1 circuit accounting:

Definition: according to " urban power network planning and design directive/guide " Q/GDW156-2006, the 110kV, the 35kV number of lines that meet N-1 safety criterion in assessment area account for the ratio of 110kV, 35kV circuit total number;

110kV, 35kV meet N-1 circuit accounting=110kV, 35kV circuit and meet number sum/110kV, 35kV circuit total number × 100% of N-1 safety criterion;

A2-3, middle pressure meet N-1 circuit accounting:

Definition: according to " urban power network planning and design directive/guide " Q/GDW156-2006 and " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, the medium-voltage line number that meets N-1 safety criterion in assessment area accounts for the ratio of medium-voltage line total number;

Middle pressure meets N-1 circuit accounting=medium-voltage line and meets number sum/medium-voltage line total number × 100% of N-1 safety criterion;

In A2-4, the N-1 of transformer station situation, can turn for load accounting:

Definition: can turn the ratio that accounts for substation's on-load for load in 110kV, the N-1 of 35kV transformer station situation in assessment area;

In 110kV, the N-1 of 35kV transformer station situation, can turn for 110kV, 35kV substation on-load × 100% that can turn load/generation N-1 of confession in load accounting=110kV, the N-1 of 35kV transformer station situation by 10kV circuit;

A3, anti-disaster ability index:

In A3-1, disaster situation, power distribution network subtracts for load accounting:

Definition: in assessment area, the net that power distribution network reduces in generation disaster situation accounts for the ratio of total net for load for load;

In disaster situation power distribution network subtract net for load accounting=minimizings for load/total net for loading × 100%;

Power distribution network customer interrupted accounting in A3-2, disaster situation:

Definition: in assessment area, power distribution network customer interrupted accounts for total user's ratio in generation disaster situation;

Power distribution network customer interrupted accounting=customer interrupted number in disaster situation/total number of users × 100%;

A4, adaptation distributed power source access capability:

A4-1, the adaptibility to response of power distribution network to distributed power source sudden change: if when distributed power source suddenlys change, power distribution network can ensure the correct operation of relay protection, ensure that the quality of power supply of power distribution network is in the scope meeting the demands, illustrate that power distribution network is good to the adaptibility to response of distributed power source sudden change;

A4-2, the anti-accident measures ability of power distribution network to distributed power source: the electric power system that refers to access distributed power source, while breaking down therein, the adaptive faculty of power distribution network, comprises anti-island protect and prevents that distributed power source is grid-connected in the time that power distribution network frequency, voltage deviation exceed specialized range;

Individual event evaluation index numerical value in A5, coordination ability index:

A5-1, high pressure power transformation volume ratio:

Definition: in assessment area, 110(35) ratio of kV substation capacity and medium-voltage distribution transformer capacity;

High pressure power transformation volume ratio=the have 110(35 of 10kV outlet) kV substation capacity/medium-voltage distribution transformer total volume.

Wherein, determine the numerical value of individual event evaluation index in described distribution network reliability index B:

Three individual event evaluation index numerical value in B1, Reliability Index;

B1-1, the average frequency of power cut of user:

Definition: according to " electric power system customer power supply reliability assessment code " DL/T836-2003, the average frequency of power cut of user in during adding up, is denoted as AITC-1, and unit is inferior/family;

B1-2. the average power off time of customer interrupted:

Definition: according to " electric power system customer power supply reliability assessment code " DL/T836-2003, during adding up in, there is the average power off time of customer interrupted, be denoted as AIHCI, unit is hour/family:

B1-3. power supply reliability:

Definition: according to " electric power system customer power supply reliability assessment code " DL/T836-2003, during adding up in, the ratio to the total hourage of the effective power-on time of user with statistics period hours number, is denoted as RS-1;

If while disregarding external action, be denoted as RS-2;

If when disregarding system power supply deficiency and rationing the power supply, be denoted as RS-3:

Five individual event evaluation index numerical value of B2, equipment dependability:

B2-1, overhead transmission line fault outage rate:

Definition: according to " electric power system customer power supply reliability assessment code " DL/T836-2003 and " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, in during adding up, every 100km overhead transmission line fault outage number of times, is denoted as ROFI unit for [inferior/(100km)];

B2-2. cable line fault outage rate:

Definition: according to " electric power system customer power supply reliability assessment code " DL/T836-2003 and " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, in during adding up, every 100km cable line outage number of times, be denoted as RCFI, unit is [inferior/(100km)];

B2-3. transformer fault outage rate:

Definition: according to " electric power system customer power supply reliability assessment code " DL/T836-2003 and " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, in during adding up, every 100 transformer fault frequencies of power cut, be denoted as RTFI, unit is [inferior/(100 year)];

B2-4. circuit breaker failure outage rate:

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, during adding up in, every 100 circuit breaker failure frequencies of power cut, are denoted as RBFI, unit is [inferior/(100 year)];

B2-5. switchgear fault outage rate:

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, during adding up in, the fault outage number of times of every 100 switches of other switches except isolating switch, is denoted as RSFI, unit is [inferior/(100 year)];

Two individual event evaluation indexes in B3, management and engineering reliability:

B3-1. uninterrupted operation accounting:

Definition: assessment area during adding up in, the uninterrupted operation time accounts for the ratio of pre-arrangement power off time;

Uninterrupted operation accounting=uninterrupted operation time/arrange in advance power off time × 100%;

B3-2. repair based on condition of component coverage rate:

Definition: assessment area during adding up in, implement the equipment number of units of repair based on condition of component and account for the ratio of equipment sum.

Wherein, determine the numerical value of individual event evaluation index in described power distribution network economic index C:

Three individual event evaluation index numerical value in C1, comprehensive economy:

C1-1. the comprehensive line loss per unit of low and medium voltage distribution network:

Definition: the line is busy the meritorious number percent of way outlet trend of the power attenuation on circuit;

If backbone number is n in electrical network, the power attenuation of circuit i is Δ P _i, transformer station's line outlet trend is gained merit for P _i, the line loss per unit of this circuit is:

r_{Δpi} = \frac{{ΔP}_{i}}{P_{i}} \times 100 %;

If the evaluation A of index " comprehensive line loss per unit " _zhxslrepresent, have:

A_{zhxsl} = \frac{Σ_{i = 1}^{n} {ΔP}_{i}}{n} \times 100 %;

C1-2. electrical network peak-valley ratio:

Definition: the peak-valley difference of whole assessment area network load and the ratio of maximum load;

Electrical network peak-valley ratio=(electrical network annual peak load-electrical network year minimum load)/electrical network annual peak load × 100%;

C1-3. peak load duration accounting:

Definition: assessment area during adding up in, electrical network peak load duration accounts for the ratio of timing statistics; In this index, 95% of the actual peak load of power taking net is peak load value in index;

Peak load duration accounting=peak load duration/timing statistics × 100%;

C2: build two individual event evaluation index numerical value in economy:

C2-1. Unit Assets year electricity sales amount:

Definition: the year electricity sales amount size that electrical network specific investment brings;

If P is the delivery in electrical network Suo Gong district, M is total assets, A _dlAvgfor this index value:

A_{dlAvg} = \frac{P}{M};

C2-2. Unit Assets year maximum supply load:

Definition: the year payload that electrical network specific investment is born;

If P _fhfor the total load in electrical network Suo Gong district, M is total assets, A _fhAvgfor this index value:

A_{fhAvg} = \frac{P_{fh}}{M};

Nine individual event evaluation index numerical value in C3, performance driving economy:

C3-1.110kV, 35kV light-loaded circuit accounting:

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, the 110kV of whole assessment area underloading, the 35kV number of lines account for the ratio of assessment area 110kV, 35kV circuit total number; Described light-loaded circuit refers to that 110kV, 35kV circuit year maximum load rate are less than or equal to 30% circuit:

110kV, 35kV light-loaded circuit accounting=underloading 110kV, 35kV number of lines sum/110kV, 35kV circuit total number × 100%;

C3-2.110kV, 35kV underloading main transformer accounting:

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, the 110kV of whole assessment area underloading, 35kV main transformer number of units account for the ratio of assessment area 110kV, the total number of units of 35kV main transformer; Underloading main transformer refers to that 110kV, 35kV main transformer year maximum load rate are less than or equal to 20% main transformer;

110kV, 35kV underloading main transformer accounting=underloading 110kV, 35kV main transformer number of units sum/110kV, total number of units × 100% of 35kV main transformer;

C3-3. in, press light-loaded circuit accounting:

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, the medium-voltage line number of whole assessment area underloading accounts for the ratio of assessment area medium-voltage line total number; Light-loaded circuit refers to that medium-voltage line year maximum load rate is less than or equal to 30% circuit;

Middle pressure light-loaded circuit accounting=underloading medium-voltage line number sum/medium-voltage line total number × 100%;

C3-4. in, press underloading distribution transforming accounting:

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, the distribution transforming number of units of whole assessment area underloading accounts for the ratio of the total number of units of assessment area distribution transforming; Underloading distribution transforming assignment becomes a year maximum load rate and is less than or equal to 20% distribution transforming;

Total number of units × 100% of middle pressure underloading distribution transforming accounting=underloading distribution transforming number of units sum/distribution transforming;

C3-5. the deviation of medium-voltage line load factor and economical operation load factor:

Definition: the mean value of whole assessment area line load rate and its economical operation load factor absolute deviation; Load factor when economical operation load factor refers to that circuit reaches economical operation electric current;

C3-6. in, press the high circuit accounting of damaging:

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, high ratio of damaging the number of lines the line is busy road total number in assessment area; Line loss per unit is greater than 5% circuit for the high circuit that damages;

High circuit accounting=lossy line travel permit number/circuit total number × 100% that damages of middle pressure;

C3-7. in, press the high distribution transforming accounting of damaging:

Definition: in assessment area, high loss transformer number of units accounts for the ratio of the total number of units of distribution transforming;

The high distribution transforming accounting=S7 that damages of middle pressure, containing S8 and total number of units × 100% of transformer number of units sum/distribution transforming of early model more;

C3-8. every ten thousand yuan power grid asset year operation and maintenance cost:

Definition: in assessment area, needed year operation and maintenance cost of every ten thousand yuan of power grid assets;

Every ten thousand yuan of operation and maintenance cost=electrical network power grid asset year, operation and maintenance cost/electrical network year total assetss;

C3-9. distributed power source generating efficiency:

Definition: the electric weight that distributed power source reality provides within a certain period of time can provide the ratio of electric weight while accounting for distributed power source full-load run;

Electric weight × 100% that can provide when electric weight/distributed power source full-load run that distributed power source generating efficiency=distributed power source reality provides.

Wherein, determine the numerical value of individual event evaluation index in described power distribution network quality index D:

Three individual event evaluation index numerical value in D1, power quality index:

D1-1. integrated voltage qualification rate:

Definition: the number percent of actual motion voltage deviation accumulated running time and corresponding total operating statistic time in limited field, formula is:

D1-2. harmonic wave qualification rate:

Definition: the time of mains by harmonics in permissible variation and the number percent of timing statistics;

D1-3. imbalance of three-phase voltage degree:

Definition: the degree that refers to three-phase imbalance in three-phase electrical power system; Represent with the root-mean-square valve number percent of voltage, electric current negative phase-sequence fundametal compoment or zero sequence fundametal compoment and positive sequence fundametal compoment;

Five individual event evaluation index numerical value in D2, quality power index:

D2-1. Power Quality Detection terminal coverage rate:

Definition: the number of users of whole assessment area installation Power Quality Detection terminal accounts for the ratio of assessment area electrical network total number of users;

Number of users/total number of users × 100% of Power Quality Detection terminal coverage rate=installation Power Quality Detection terminal;

D2-2. the adjustable reactive capability accounting of automatic voltage control system AVC:

Definition: whole assessment area automatic voltage control system AVC reactive compensation capacity accounts for the ratio of assessment area reactive-load compensation total volume;

Automatic voltage control system AVC is adjustable reactive capability accounting=automatic voltage control system AVC reactive compensation capacity/reactive-load compensation total volume × 100%;

D2-3. meet responsible consumer power requirement accounting:

Definition: the responsible consumer number that can meet power requirement accounts for the ratio of responsible consumer sum;

Meet responsible consumer power requirement accounting=can meet responsible consumer number/responsible consumer sum × 100% of power requirement;

D2-4. meet the ability that special user customizes electric power: this index is optional index.

D2-5. client's industry expands service time limit compliance rate:

Definition: assessment area during adding up in, can meet service number that client's industry expands the service time limit and account for client's industry and expand the total ratio of service;

Client's industry expansion service time limit compliance rate=can meet service number/client industry expansion in client's industry expansion service time limit to serve sum × 100%;

Wherein, determine the numerical value of individual event evaluation index in the intelligent index E of described power distribution network:

Four individual event evaluation index numerical value in E1, level of IT application index:

E1-1. distribution transforming information acquisition rate:

Definition: whole assessment area can gather the basic operation information of distribution transforming and the distribution transforming number of units uploaded accounts for the ratio of the total number of units of assessment area electrical network distribution transforming;

Total number of units × 100% of distribution transforming number of units sum/distribution transforming of distribution transforming information acquisition rate=can gather the basic operation information of distribution transforming and upload;

E1-2. the concertedness of distribution infosystem:

Definition: the degree that distribution infosystem is coordinated mutually, comprises between system that can information be shared, whether inter-system data standard is consistent;

E1-3. distribution infosystem coverage:

This index is for assessment of distribution information system terminal user's coverage, and distribution information system terminal user generally comprises industry and commerce user and the resident of public substation transformer, individual line subscriber, all kinds of large, medium and small dedicated transformer user, all kinds of 380/220V power supply;

E1-4. the security of distribution infosystem:

The security assignment net of distribution infosystem is guaranteed the ability of security information for power system;

Seven individual event evaluation index numerical value in E2, automatization level index:

E2-1. intelligent substation accounting:

Definition: the ratio of whole assessment area intelligent substation Zuo Shuozhan assessment area transformer station total seat number;

Intelligent substation ratio=intelligent substation seat number/transformer station total seat number × 100%;

E2-2. distribution power automation terminal coverage rate:

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " Q/GDW565-2010, the switch number of units that whole assessment area has " two is distant " or " three is distant " function accounts for the ratio of the total number of units of assessment area power network switch;

Total number of units × 100% of switch number of units sum/switch of distribution power automation terminal coverage rate=have " two is distant " or " three is distant " function; Two point in the direction of remote measurement and remote signalling, and three point in the direction of remote measurement, Remote control;

E2-3. distributing automation apparatus year available rate:

Definition: according to No. (2011) 69, the raw distribution of " the practical examination detailed rules and regulations of power distribution automation (trying) " national grid and " electrical power distribution automatization system operation maintenance management specification " Q/GDW626-2011, in assessment area, the available rate of distributing automation apparatus in timing statistics; Using the logout of distributing automation apparatus as statistics foundation; Be >=95% to the basic demand of this index;

Distributing automation apparatus year available rate=(timing statistics × distributing automation apparatus sum-each distributing automation apparatus down time summation)/(timing statistics × distributing automation apparatus sum) × 100%;

Wherein, distributing automation apparatus down time comprises distributing automation apparatus unavailable time and the down time of distributing automation apparatus own that communication disruption causes;

E2-4. distribution network line fault position success rate:

Definition: according to No. (2011) 69, the raw distribution of " the practical examination detailed rules and regulations of power distribution automation (trying) " national grid and " electrical power distribution automatization system operation maintenance management specification " Q/GDW626-2011, in assessment area, the accuracy that line fault positioned of distribution power automation terminal in during adding up; Be >=95% to the basic demand of this index;

Correct number of times/the localization of fault of distribution network line fault position success rate=localization of fault total degree × 100%;

E2-5. distribution network failure isolation action accuracy:

Definition: according to No. (2011) 69, the raw distribution of " the practical examination detailed rules and regulations of power distribution automation (trying) " national grid and " electrical power distribution automatization system operation maintenance management specification " Q/GDW626-2011, in assessment area, the accuracy that fault isolated to action of distributing automation apparatus in during adding up; Be >=98% to the basic demand of this index;

Correct number of times/the fault isolation of distribution network failure isolation action accuracy=fault isolation total degree × 100%;

E2-6. power distribution network network reconstruct action accuracy:

Definition: in assessment area, the accuracy that fault carried out to network reconfiguration action of distributing automation apparatus in during adding up;

Power distribution network network reconstruct action accuracy=network reconfiguration moves correct number of times/network reconfiguration total degree × 100%;

E2-7. protect fast outfit rate:

Definition: in assessment area, the quantity that is equipped with protection fast accounts for the total ratio of protection; This index is optional index;

The protection outfit rate=outfit quantity of protection fast/protection sum × 100% fast;

Seven individual event evaluation index numerical value in E3, the interactive index of power supply:

E3-1. distributed power source access capacity accounting:

Definition: whole assessment area distributed power source access capacity accounts for the ratio of assessment area total installation of generating capacity; According to " distributed power source access electric power network technique regulation " Q/GDW480-2010, distributed power source total volume should not exceed 25% of peak load in upper level transformer-supplied region in principle;

Distributed power source access capacity accounting=distributed power source access capacity/electrical network total installation of generating capacity × 100%;

E3-2. controlled distribution formula power supply capacity accounting:

Definition: in assessment area, the controlled distributed power source capacity of access power distribution network accounts for the ratio of access power distribution network distributed power source total volume; According to " specification is controlled in the operation of distributed power source access power distribution network " Q/GDW667-2011, controlled distribution formula power supply refers to have the ability of carrying out two-way communication with dispatching of power netwoks mechanism, can realize the distributed power source of remote monitoring and control function;

Distributed power source total volume × 100% of the distributed power source capacity/access of controlled distributed power source capacity accounting=controlled;

E3-3. the distributed power source prediction deviation of exerting oneself:

Definition: the actual curve that distributed power source is exerted oneself departs from prediction curve degree;

E3-4. energy storage system capacity accounting:

Definition: whole assessment area energy storage device access capacity accounts for the ratio of assessment area total installation of generating capacity;

Capacity of energy storing device accounting=capacity of energy storing device/electrical network total installation of generating capacity × 100%;

E3-5. controlled energy storage system capacity accounting:

Definition: the electric automobile that do not comprise of access power distribution network fills the ratio of changing the controlled energy storage device capacity of electric facility and account for access power distribution network energy storage device total volume in assessment area; The accumulator system that controlled accumulator system refers to realize remote monitoring and controls function;

Energy storage device total volume × 100% of the energy storage device capacity/access of controlled accumulator system ratio=controlled;

Five individual event evaluation index numerical value in E4, user interaction index:

E4-1. intelligent electric meter coverage rate:

Definition: the intelligent electric meter number that whole assessment area is installed accounts for the ratio of the total ammeter number of assessment area electrical network;

Intelligent electric meter coverage rate=intelligent electric meter number/total ammeter number × 100%;

E4-2. dynamic electricity price user accounting:

Definition: the user under dynamic electricity price and load take family and the total ratio of load;

Customer charge number/customer charge sum × 100% under user and load proportion=dynamic electricity price under dynamic electricity price;

E4-3. electric automobile fills and changes electric facility density:

Definition: the every 100km of whole assessment area ²electric automobile heavily changes electric facility seat number;

Electric automobile fills and changes electric facility density=electric automobile and fill and change the total seat of electric facility number/total area;

E4-4. adapt to microgrid access capability:

E4-5. the capacity accounting of controllable burden:

Controllable burden refers to the load that power department can Monitoring and Controlling, is realized by load management system;

Definition: can carry out the load proportion that direct load control or user's side load are controlled;

Load/electrical network total load × 100% that the capacity accounting of controllable burden=can carry out direct load control or user's side load are controlled;

Two individual event evaluation index numerical value in E5, Development and Harmony index:

E5-1. regenerative resource access capacity accounting:

Definition: whole assessment area regenerative resource access capacity accounts for the ratio of assessment area total installation of generating capacity;

Regenerative resource access capacity accounting=regenerative resource access capacity/net capacity × 100%;

E5-2. environment compatibility:

This index mainly electrical network is reduced discharging and environmental improvement aspect is assessed, and also comprises the whether attractive in appearance of facilities and equipment, ring main unit, circuit and whether coordinating and unifying aspect of surrounding environment.

Wherein, described high end finger 110kV, 35kV; Middle end finger 10kV.

Compared with the prior art, the beneficial effect that the present invention reaches is:

1, power distribution network provided by the invention efficiently moves appraisal procedure intelligent power distribution web, high efficiency operation is defined, and has proposed boundary condition, reaches security, reliability, economy, quality and the intelligent high unity of operation of power networks.When to each individual event evaluation index scoring, calculate according to the implication of each evaluation index, obtain the concrete data of evaluation index.And each individual event evaluation index numerical value is converted to concrete score, according to index weights, the concrete score weighting of each individual event evaluation index is gathered, the comprehensive grading that obtains assessment area intelligent power distribution network operation high efficiency, appraisal result can characterize the efficient operation level of institute's assessment power distribution network.Intelligent power distribution web, high efficiency operation evaluation index system provided by the invention is complete, clear, can reflect intelligent distribution network planning, construction and operation conditions comprehensively, assessment result will provide important foundation for Electric Power Network Planning and management and running personnel's decision-making work, this system is easy to utilize simultaneously, has higher practical value.

2, apply appraisal procedure of the present invention, investigation and analysis and assessment have on the spot been carried out in certain intelligent distribution network demonstration area, combined with intelligent Grid Construction Project has carried out practical application, approximately 6.3 hundred million yuan of this intelligent grid demonstration area original plan gross investments, wherein the investment of rack transformation part is about 4,600 ten thousand yuan, is mainly used to further improve power supply reliability.Known by analyzing the As-Is Assessment result of this southern, demonstration area power distribution network, the some index of correlation scores that relate to rack transformation are all very high, even majority is 100 points, as: 110kV, 35kV meet N-1 main transformer accounting, 110kV, 35kV and meet N-1 circuit accounting, middle pressure and meet in N-1 circuit accounting, the N-1 of transformer station situation and can turn for load accounting etc.This explanation rack transformation is very little on the impact of operation high efficiency, and its relevant construction project can be delayed according to the development of electrical network in good time.By further analysis, think in this area's power distribution network and have 5 track remodelling engineerings not urgent, can postpone.The amendment of this construction plan, saves intelligent grid demonstration area and invests approximately 1,220 ten thousand yuan, has improved electrical network economy, and can not reduce high efficiency index evaluation value.Meanwhile, part intelligent construction project still can advance on schedule, and along with the raising of intelligent degree, high efficiency index evaluation value also can further rise.

Brief description of the drawings

Fig. 1 is the process flow diagram of intelligent power distribution web, high efficiency operation appraisal procedure provided by the invention;

Fig. 2 is intelligent power distribution web, high efficiency operation evaluation index system schematic diagram provided by the invention;

Fig. 3 is provided by the invention year based model for load duration curve figure;

Fig. 4 is the evaluation index score curve figure of high pressure capacity-load ratio provided by the invention;

Fig. 5 is the evaluation index score curve figure of middle pressure capacity-load ratio provided by the invention;

Fig. 6 is the evaluation index score curve figure of 110kV provided by the invention, 35kV heavy duty main transformer accounting;

Fig. 7 is the evaluation index score curve figure of 110kV provided by the invention, 35kV heavy-haul line accounting;

Fig. 8 is the evaluation index score curve figure of middle pressure heavy-haul line accounting provided by the invention;

Fig. 9 is the evaluation index score curve figure that middle ballast provided by the invention carries distribution transforming accounting;

Figure 10 is the evaluation index score curve figure that 110kV provided by the invention, 35kV meet N-1 main transformer accounting;

Figure 11 is the evaluation index score curve figure that 110kV provided by the invention, 35kV meet N-1 circuit accounting;

Figure 12 is the evaluation index score curve figure that middle pressure provided by the invention meets N-1 circuit accounting;

Figure 13 is the evaluation index score curve figure that can turn in the N-1 of transformer station situation provided by the invention for load accounting;

Figure 14 is that in disaster situation provided by the invention, power distribution network subtracts the evaluation index score curve figure for load accounting;

Figure 15 is the evaluation index score curve figure of power distribution network customer interrupted accounting in disaster situation provided by the invention;

Figure 16 is the evaluation index score curve figure of high pressure power transformation volume ratio provided by the invention;

Figure 17 is the evaluation index score curve figure of the average frequency of power cut of user provided by the invention;

Figure 18 is the evaluation index score curve figure of the average power off time of customer interrupted provided by the invention;

Figure 19 is the evaluation index score curve figure of power supply reliability provided by the invention;

Figure 20 is the evaluation index score curve figure of overhead transmission line fault outage rate provided by the invention;

Figure 21 is the evaluation index score curve figure of cable line fault outage rate provided by the invention;

Figure 22 is the evaluation index score curve figure of transformer fault outage rate provided by the invention;

Figure 23 is the evaluation index score curve figure of circuit breaker failure outage rate provided by the invention;

Figure 24 is the evaluation index score curve figure of switchgear fault outage rate provided by the invention;

Figure 25 is the evaluation index score curve figure of uninterrupted operation accounting provided by the invention (time);

Figure 26 is the evaluation index score curve figure of repair based on condition of component coverage rate provided by the invention;

Figure 27 be provided by the invention in (low) be press-fitted the evaluation index score curve figure of electric network synthetic line loss per unit;

Figure 28 is the evaluation index score curve figure of electrical network peak-valley ratio provided by the invention;

Figure 29 is the evaluation index score curve figure of peak load duration accounting provided by the invention;

Figure 30 is the evaluation index score curve figure of Unit Assets year provided by the invention electricity sales amount;

Figure 31 is the evaluation index score curve figure of maximum supply load of Unit Assets year provided by the invention;

Figure 32 is the evaluation index score curve figure of 110kV provided by the invention, 35kV light-loaded circuit accounting;

Figure 33 is the evaluation index score curve figure of 110kV provided by the invention, 35kV underloading main transformer accounting;

Figure 34 is the evaluation index score curve figure of middle pressure light-loaded circuit accounting provided by the invention;

Figure 35 is the evaluation index score curve figure of middle pressure underloading distribution transforming accounting provided by the invention;

Figure 36 is the evaluation index score curve figure of the deviation of medium-voltage line load factor provided by the invention and economical operation load factor;

Figure 37 is the middle high evaluation index score curve figure that damages circuit accounting that presses provided by the invention;

Figure 38 is the middle high evaluation index score curve figure that damages distribution transforming accounting that presses provided by the invention;

Figure 39 be provided by the invention every ten thousand yuan power grid asset year operation and maintenance cost evaluation index score curve figure;

Figure 40 is the evaluation index score curve figure of distributed power source generating efficiency provided by the invention;

Figure 41 is the evaluation index score curve figure of integrated voltage qualification rate provided by the invention;

Figure 42 is the evaluation index score curve figure of harmonic wave qualification rate provided by the invention;

Figure 43 is the evaluation index score curve figure of imbalance of three-phase voltage degree provided by the invention;

Figure 44 is the evaluation index score curve figure of Power Quality Detection terminal coverage rate provided by the invention;

Figure 45 is the evaluation index score curve figure of automatic voltage control system provided by the invention (AVC) coverage rate;

Figure 46 is the evaluation index score curve figure that meets responsible consumer power requirement accounting provided by the invention;

Figure 47 is the evaluation index score curve figure that client's industry provided by the invention expands service time limit compliance rate;

Figure 48 is the evaluation index score curve figure of distribution transforming information acquisition rate provided by the invention;

Figure 49 is the evaluation index score curve figure of intelligent substation accounting provided by the invention;

Figure 50 is the evaluation index score curve figure of distribution power automation terminal coverage rate provided by the invention;

Figure 51 is the evaluation index score curve figure of distributing automation apparatus year provided by the invention available rate;

Figure 52 is the evaluation index score curve figure of distribution network line fault position success rate provided by the invention;

Figure 53 is the evaluation index score curve figure of distribution network failure isolation action accuracy provided by the invention;

Figure 54 is the evaluation index score curve figure of power distribution network network reconstruct action accuracy provided by the invention;

Figure 55 is the evaluation index score curve figure of distributed power source access capacity accounting provided by the invention;

Figure 56 is the evaluation index score curve figure of controlled distribution formula power supply capacity accounting provided by the invention;

Figure 57 is the exert oneself evaluation index score curve figure of prediction deviation of distributed power source provided by the invention;

Figure 58 is the evaluation index score curve figure of energy storage system capacity accounting provided by the invention;

Figure 59 is the evaluation index score curve figure of controlled energy storage system capacity accounting provided by the invention;

Figure 60 is the evaluation index score curve figure of intelligent electric meter coverage rate provided by the invention;

Figure 61 is the evaluation index score curve figure of dynamic electricity price user accounting provided by the invention;

Figure 62 is that electric automobile provided by the invention fills the evaluation index score curve figure that changes electric facility density;

Figure 63 is the evaluation index score curve figure of the capacity accounting of controllable burden provided by the invention;

Figure 64 is the evaluation index score curve figure of regenerative resource access capacity accounting provided by the invention.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.

The flow process of intelligent power distribution web, high efficiency operation appraisal procedure provided by the invention as shown in Figure 1, specifically comprises the steps:

The present invention moves and defines intelligent power distribution web, high efficiency, reaches security, reliability, economy, quality and the intelligent high unity of operation of power networks.Under above-mentioned boundary condition, set up intelligent power distribution web, high efficiency operation evaluation index system, this system has contained intelligent power distribution software safety, reliability, economy, quality and intelligent five aspects, and intension to each index in index system, definition be illustrated, set up the quantification computational analysis model of each individual event evaluation index.Wherein, safety and reliability is the basic constraint condition of operation of power networks, is unbridgeable boundary and basic guarantee; Economy is to ensure under the reliable prerequisite of safe operation of electric network, the direct economic benefit producing or because reducing loss, the indirect benefit of bringing such as reducing costs, the efficient operation of intelligent distribution network should be considered that power grid security is reliable and reduce costs, increases the mutual coordination between benefit; Because power supply quality has very large impact to industry and public utilities user's safety in production, economic benefit and people's lives, therefore electrical network is meeting on the basis of customer power supply ability need, the requirement of user to electric energy quality of also should satisfying the demand, for user provides the electric power supply of high-quality; The intelligent main measurement of power distribution network be the effect of constructing and implementing of intelligent distribution network, be an importance of intelligent power distribution web, high efficiency operation.

The intelligent power distribution web, high efficiency operation evaluation index system that the present invention proposes has the wider scope of application, running status that can comprehensive assessment intelligent distribution network, assessment result will provide important foundation for dispatching of power netwoks, planning and operational management personnel's decision-making work.

(2) clear and definite service object; The final service object of evaluation index system has determined the purposes of index system, and the foundation of index system is had to vital directive function.This assessment main services is in the traffic department of electrical network, and contain the various aspects of power distribution network operation, assessment result can provide some quantitative guidances to power distribution network despatching work, for dispatcher's decision-making work provides important foundation, and then raising and the optimization of promotion operation of power networks level.

(3) build evaluation index system; The operation level of intelligent distribution network is the comprehensive embodiment of distribution network construction, management level, is subject to the impact of the factors such as geographical conditions, grid structure, equipment equipment and operation and management level.The assessment of the operation level to intelligent distribution network should form a comprehensive evaluation system.Whether efficiently safe, reliable and economy is the basic demand of mains supply, be also assessment operation of power networks basic index; Because power supply quality has very large impact to industry and public utilities user's safety in production, economic benefit and people's lives, therefore electrical network is meeting on the basis of customer power supply ability need, the requirement of user to electric energy quality of also should satisfying the demand, for user provides the electric power supply of high-quality; The intelligent of power distribution network is an importance of intelligent power distribution web, high efficiency operation.Comprehensive above-mentioned consideration, in conjunction with the many-sided suggestion of electric power expert, determines intelligent power distribution web, high efficiency operation evaluation index system as shown in Figure 2.

Intelligent power distribution web, high efficiency operation evaluation index system provided by the invention as shown in Figure 2, comprises security of distribution network index, distribution network reliability index, power distribution network economic index, power distribution network operation quality index and five indexs of the intelligent index of power distribution network;

Security of distribution network refers to Supply Security, and power distribution network exits, loads at element and maintains the ability of continuous power supply in irregular variation situation; Therefore power supply safety sexual needs ensure by Capacity Margin and network redundancy.Equipment (element) in electrical network and network when operation reserved nargin larger, the Supply Security of electrical network is higher.Mainly by loading condition rate, turn for indexs such as abilities, anti-disaster ability and assess.In addition, also should consider that high permeability distributed power source accesses/exit the impact on electric network security.The safety indexes of power distribution network comprises power distribution network loading condition index, turns for capacity index, anti-disaster ability index, adapts to distributed power source access capability index and coordination ability index;

Loading condition index comprises high pressure capacity-load ratio, middle pressure capacity-load ratio, and 110kV, 35kV heavy duty main transformer accounting, 110kV, 35kV heavy-haul line accounting, middle pressure heavy-haul line accounting and middle ballast carry six individual event evaluation indexes of distribution transforming accounting;

Turn confession capacity index and comprise that 110kV, 35kV meet N-1 main transformer accounting, 110kV, 35kV meet N-1 circuit accounting, and middle pressure meets in N-1 circuit accounting and the N-1 of transformer station situation can turn four individual event evaluation indexes of confession load accounting;

Anti-disaster ability index comprises that in disaster situation, (disaster refers to impact or may affect power system safety and stability operation or affect electric power (heating power) regular supply, disaster, the accident etc. that need to take Disposal Measures to be tackled.) power distribution network subtracts for load accounting and two individual event evaluation indexes of power distribution network customer interrupted accounting;

Coordination ability index comprises individual event evaluation index of high pressure power transformation volume ratio.

The ability of distribution network reliability confession under directions electric system to user's continued power; According to " electric power system customer power supply reliability evaluation code " relevant regulations (DL/T836-2003), electric power system customer power supply reliability statistics evaluation index, calculates respectively by different electric pressures, and is divided into leading indicator and the large class of reference index two.System reliability belongs to leading indicator, and equipment dependability belongs to reference index.In addition, manage and technological means by employing, also can improve system reliability.

Distribution network reliability index comprises Reliability Index, controller switching equipment reliability index and management and engineering reliability index;

Reliability Index comprises the average frequency of power cut of user, the average power off time of customer interrupted and three individual event evaluation indexes of power supply reliability;

Controller switching equipment reliability index comprises overhead transmission line fault outage rate, cable line fault outage rate, transformer fault outage rate, circuit breaker failure outage rate and five individual event evaluation indexes of switchgear fault outage rate;

Management comprises uninterrupted operation accounting and two individual event evaluation indexes of repair based on condition of component coverage rate with engineering reliability index.(repair based on condition of component is a kind of on the basis of equipment state assessment, arranges repair time and project according to equipment state and analyzing and diagnosing result, and the maintenance mode of initiatively implementing.）

Power distribution network economic index is mainly weighed from comprehensive line loss per unit, electrical network peak-valley ratio equal angles; The electric power benefit that the construction economy of electrical network mainly can obtain electrical network gross investment is that storage benefit is evaluated; The performance driving economy of electrical network refers to and is ensureing electric power netting safe running and meeting on the basis of power demands, by adjusting power system operating mode, reduce to greatest extent via net loss, and make full use of grid equipment, to reach best economic benefit, comprise comprehensive economy index, build economic index and three aspects of performance driving economy index;

Comprehensive economy index comprises low and medium voltage distribution network line loss per unit, power distribution network peak-valley ratio and three individual event evaluation indexes of peak load duration accounting;

Build economic index and comprise Unit Assets year electricity sales amount and two individual event evaluation indexes of maximum supply load of Unit Assets year;

Performance driving economy index comprises 110kV, 35kV light-loaded circuit accounting, 110kV, 35kV underloading main transformer accounting, middle pressure light-loaded circuit accounting, middle pressure underloading distribution transforming accounting, the deviation of medium-voltage line load factor and economical operation load factor, the high circuit accounting of damaging of middle pressure, the high distribution transforming accounting of damaging of middle pressure, every ten thousand yuan of power grid asset operation and maintenance costs and nine individual event evaluation indexes of distributed power source generating efficiency.

Power distribution network quality index comprises power quality index and quality power index;

Power quality index comprises rate of qualified voltage, harmonic wave qualification rate and three individual event evaluation indexes of imbalance of three-phase voltage degree;

Reactive capability accounting that quality power index comprises Power Quality Detection terminal coverage rate, automatism voltage control AGC is adjustable, meet customer power supply requirement accounting, the ability that meets customization electric power and client's industry expands five individual event evaluation indexes of service time limit compliance rate.

The intelligent index of power distribution network comprises level of IT application index, automatization level index, the interactive index of power supply, user interaction index and Development and Harmony index;

Level of IT application index comprises four individual event evaluation indexes of security of concertedness, distribution infosystem coverage and the distribution infosystem of distribution transforming information acquisition rate, distribution infosystem;

Automatization level index comprises intelligent substation accounting, distribution power automation terminal coverage rate, distributing automation apparatus year available rate, distribution network line fault position success rate, distribution network failure isolation action accuracy, power distribution network network reconstruct action accuracy and protects fast seven individual event evaluation indexes of equipment rate;

The interactive index of power supply comprises that (controlled distribution formula power supply refers to have the ability of carrying out two-way communication with dispatching of power netwoks mechanism, can realize the distributed power source of remote monitoring and control function for distributed power source access capacity accounting, controlled distribution formula power supply.) capacity accounting, distributed power source prediction deviation rate, energy storage system capacity accounting and the controlled accumulator system (accumulator system that controlled accumulator system refers to realize remote monitoring and controls function of exerting oneself.) five individual event evaluation indexes of capacity accounting;

User interaction index comprises that intelligent electric meter coverage rate, dynamic electricity price user accounting, electric automobile fill five the individual event evaluation indexes of capacity accounting that change electric facility density, adapt to microgrid access capability and controllable burden;

(4) determine individual event evaluation index numerical value;

A1-1. high pressure capacity-load ratio

Capacity-load ratio is a certain power supply area, the ratio of converting equipment total volume (kVA) and corresponding total load (kW).

Capacity-load ratio is the important technology index of power transformation capacity adequacy degree, is also that electrical network ensures the important macroscopic control target that load shifts smoothly while breaking down.Reasonably capacity-load ratio combines with appropriate grid structure, and the orderly transfer of loading during for fault ensures power supply reliability, and the increased requirement that adapts to load is all vital.The position of layouting, the quantity of capacity-load ratio and transformer station, mutually turn relevant for ability, relevant with electric network composition, the definite impact that will consider the principal elements such as dispersing coefficient of load, average power factor, transformer load rate, reserve factor, load growth rate of capacity-load ratio.In engineering, generally can adopt following formula estimation:

R_{S} = \frac{Σ S_{ei}}{P_{\max}}

In formula: R _s-capacity-load ratio (MVA/MW);

P _maxthe peak load of-this electric pressure the whole network or service area;

∑ S _eitransforming plant main transformer capacity sum in-this electric pressure the whole network or service area.

A1-2. in, press capacity-load ratio

Definition: with reference to the definition of " high pressure capacity-load ratio ", the ratio of assessment area substation transformer total volume (kVA) and corresponding middle pressure total load (kW).

Middle pressure capacity-load ratio=substation transformer total volume/middle pressure peak load.

A1-3.110kV, 35kV heavy duty main transformer accounting

Definition: assessment area during adding up in heavily loaded 110kV, 35kV main transformer number of units account for the ratio of 110kV in assessment area, the total number of units of 35kV main transformer.With reference to the regulation of " heavily loaded distribution transforming " in index " in (6), ballast carries distribution transforming accounting ", heavily loaded main transformer refers to 110kV, 35kV main transformer year maximum load rate meets or exceeds 80% and lasting more than 2 hours.

110kV, 35kV heavy duty main transformer accounting=heavily loaded 110kV, 35kV main transformer number of units sum/110kV, total number of units × 100% of 35kV main transformer.

A1-4.110kV, 35kV heavy-haul line accounting

Definition: assessment area during adding up in heavily loaded 110kV, the 35kV number of lines account for the ratio of assessment area 110kV, 35kV circuit total number.The regulation of " middle pressure heavy-haul line " in " pressing heavy-haul line accounting in (5) " with reference to index, 110kV, 35kV heavy-haul line refer to that 110kV, 35kV circuit year maximum load rate meet or exceed 70% and lasting more than 1 hour.

110kV, 35kV heavy-haul line accounting=heavily loaded 110kV, 35kV number of lines sum/110kV, 35kV circuit total number × 100%.

A1-5. in, press heavy-haul line accounting

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), the heavily loaded medium-voltage line number of assessment area in during adding up accounts for the ratio of assessment area medium-voltage line total number.Middle pressure heavy-haul line refer to medium-voltage line year maximum load rate meet or exceed 70% and continue more than 1 hour.

Middle pressure heavy-haul line accounting=heavily loaded medium-voltage line number sum/circuit total number × 100%.

A1-6. middle ballast carries distribution transforming accounting

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), assessment area during adding up in, heavily loaded distribution transforming number of units accounts for the ratio of the total number of units of assessment area distribution transforming.Middle ballast carries a distribution transforming assignment change year maximum load rate and meets or exceeds 80% and lasting more than 2 hours.

Middle ballast carries total number of units × 100% of distribution transforming accounting=heavily loaded distribution transforming number of units sum/distribution transforming.

A2-1.110kV, 35kV meet N-1 main transformer accounting

Definition: according to " urban power network planning and design directive/guide " (Q/GDW156-2006), the main transformer number of units that meets main transformer N-1 safety criterion in assessment area accounts for the ratio of the total number of units of main transformer.

110kV, 35kV meet N-1 main transformer accounting=110kV, 35kV main transformer and meet total number of units × 100% of number of units sum/main transformer of N-1 safety criterion.

A2-2.110kV, 35kV meet N-1 circuit accounting

Definition: according to " urban power network planning and design directive/guide " (Q/GDW156-2006), the 110kV, the 35kV number of lines that meet N-1 safety criterion in assessment area account for the ratio of 110kV, 35kV circuit total number.

110kV, 35kV meet N-1 circuit accounting=110kV, 35kV circuit and meet number sum/110kV, 35kV circuit total number × 100% of N-1 safety criterion.

A2-3. in, press and meet N-1 circuit accounting

Definition: according to " urban power network planning and design directive/guide " (Q/GDW156-2006) and " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), the medium-voltage line number that meets N-1 safety criterion in assessment area accounts for the ratio of medium-voltage line total number.

Middle pressure meets N-1 circuit accounting=medium-voltage line and meets number sum/medium-voltage line total number × 100% of N-1 safety criterion.

A2-4. in the N-1 of transformer station situation, can turn for load accounting

Definition: can turn the ratio that accounts for substation's on-load for load in 110kV, the N-1 of 35kV transformer station situation in assessment area.

In 110kV, the N-1 of 35kV transformer station situation, can turn for 110kV, 35kV substation on-load × 100% that can turn load/generation N-1 of confession in load accounting=110kV, the N-1 of 35kV transformer station situation by 10kV circuit.

A3-1. in disaster situation, power distribution network subtracts for load accounting

Definition: in assessment area, the net that power distribution network reduces in generation disaster situation accounts for the ratio of total net for load for load.

In disaster situation power distribution network subtract net for load accounting=minimizings for load/total net for loading × 100%.

A3-2. power distribution network customer interrupted accounting in disaster situation

Definition: in assessment area, power distribution network customer interrupted accounts for total user's ratio in generation disaster situation.

Power distribution network customer interrupted accounting=customer interrupted number in disaster situation/total number of users × 100%.

A4-1. the adaptibility to response of power distribution network to distributed power source sudden change

Distributed power source access power distribution network taking wind energy, sun power as representative, its power stage is subject to the impact of natural conditions to a great extent, and this has just increased the uncertainty of power distribution network operation widely.Distributed power source suddenly change input that extreme case refers to distributed power source with exit, larger to the impact of power distribution network, be the safe and stable operation that ensures power distribution network, power distribution network should possess certain adaptibility to response to distributed power source sudden change.If when distributed power source sudden change, power distribution network can ensure the correct operation of relay protection, ensure that the quality of power supply of power distribution network is in the scope meeting the demands, illustrate that power distribution network is more excellent to the adaptibility to response of distributed power source sudden change.

A4-2. the anti-accident measures ability of power distribution network to distributed power source

The anti-accident measures ability of power distribution network to distributed power source, mainly refers to the electric power system that accesses distributed power source, while breaking down therein, and the adaptive faculty of power distribution network.Mainly comprise anti-island protect and prevent that distributed power source is grid-connected in the time that power distribution network frequency, voltage deviation exceed specialized range.

A5-1. high pressure power transformation volume ratio

Definition: in assessment area, 110(35) ratio of kV substation capacity and medium-voltage distribution transformer capacity.

B1-1. the average frequency of power cut of user

Definition: according to " electric power system customer power supply reliability evaluation code " (DL/T836-2003), the average frequency of power cut of user in during adding up, is denoted as AITC-1 (inferior/family).

B1-2. the average power off time of customer interrupted

Definition: according to " electric power system customer power supply reliability evaluation code " (DL/T836-2003), during adding up in, there is the average power off time of customer interrupted, be denoted as AIHCI (hour/family).

B1-3. power supply reliability

Definition: according to " electric power system customer power supply reliability evaluation code " (DL/T836-2003), during adding up in, the ratio to the total hourage of the effective power-on time of user with statistics period hours number, is denoted as RS-1.

If while disregarding external action, be denoted as RS-2.

If when disregarding system power supply deficiency and rationing the power supply, be denoted as RS-3.

B2-1. overhead transmission line fault outage rate

Definition: according to " electric power system customer power supply reliability evaluation code " (DL/T836-2003) and " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), in during adding up, every 100km overhead transmission line fault outage number of times, be denoted as ROFI[time/(100km)].

B2-2. cable line fault outage rate

Definition: according to " electric power system customer power supply reliability evaluation code " (DL/T836-2003) and " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), in during adding up, every 100km cable line outage number of times, be denoted as RCFI[time/(100km)].

B2-3. transformer fault outage rate

Definition: according to " electric power system customer power supply reliability evaluation code " (DL/T836-2003) and " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), in during adding up, every 100 transformer fault frequencies of power cut, be denoted as RTFI[time/(100 year)].

B2-4. circuit breaker failure outage rate

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), during adding up in, every 100 circuit breaker failure frequencies of power cut, be denoted as RBFI[time/(100 year)].

B2-5. switchgear fault outage rate

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), during adding up in, the fault outage number of times of every 100 switches (other switches except isolating switch), be denoted as RSFI[time/(100 year)].

B3-1. uninterrupted operation accounting

Definition: assessment area during adding up in, the uninterrupted operation time accounts for the ratio of pre-arrangement power off time.

Uninterrupted operation accounting=uninterrupted operation time/arrange in advance power off time × 100%.

B3-2. repair based on condition of component coverage rate

Definition: assessment area during adding up in, table of equipment (individual) number of implementing repair based on condition of component accounts for the ratios of equipment sum.

C1-1. in, (low) is press-fitted electric network synthetic line loss per unit

Definition: the line is busy the meritorious number percent of way outlet trend of the power attenuation on circuit.

Index " the comprehensive line loss per unit of medium voltage distribution network " is mainly from power line loss overall condition angle analysis grid line loss level.Calculate the average line loss rate of electrical network by trend, mainly consider the power attenuation of circuit and transformer, be specifically described for the calculating of the comprehensive line loss per unit of medium voltage distribution network below:

If backbone number is n in electrical network, the power attenuation of circuit i is △ P _i, transformer station's line outlet trend is gained merit for P _i, the line loss per unit of this circuit is:

r_{Δpi} = \frac{{ΔP}_{i}}{P_{i}} \times 100 %

If the evaluation A of index " comprehensive line loss per unit " _zhxslrepresent, have

A_{zhxsl} = \frac{Σ_{i = 1}^{n} {ΔP}_{i}}{n} \times 100

C1-2. electrical network peak-valley ratio

Definition: the peak-valley difference of whole assessment area network load and the ratio of maximum load.

Electrical network peak-valley ratio=(electrical network annual peak load-electrical network year minimum load)/electrical network annual peak load × 100%.

C1-3. peak load duration accounting

Definition: assessment area during adding up in, electrical network peak load duration accounts for the ratio of timing statistics.In this index, 95% of the actual peak load of power taking net is peak load value in index.This index can obtain by analysis load duration curve.If using year as timing statistics section, can reference year based model for load duration curve calculate this index, year based model for load duration curve is regardless of life boundary successively, only by annual load variations, arrange to draw by the numerical values recited of network load in a year and lasting hourage order thereof and form, the annual load change of electrical network and the relation of based model for load duration time have been reflected, as shown in Figure 3.

Peak load duration accounting=peak load duration/timing statistics × 100%.

C2-1. Unit Assets year electricity sales amount

Definition: the year electricity sales amount size that electrical network specific investment brings.

A_{dlAvg} = \frac{P}{M}

C2-2. Unit Assets year maximum supply load

Definition: the year payload that electrical network specific investment is born.

A_{fhAvg} = \frac{P_{fh}}{M}

C3-1.110kV, 35kV light-loaded circuit accounting

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), the 110kV of whole assessment area underloading, the 35kV number of lines account for the ratio of assessment area 110kV, 35kV circuit total number.Light-loaded circuit refers to that 110kV, 35kV circuit year maximum load rate are less than or equal to 30% circuit.

110kV, 35kV light-loaded circuit accounting=underloading 110kV, 35kV number of lines sum/110kV, 35kV circuit total number × 100%.

C3-2.110kV, 35kV underloading main transformer accounting

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), the 110kV of whole assessment area underloading, 35kV main transformer number of units account for the ratio of assessment area 110kV, the total number of units of 35kV main transformer.Underloading main transformer refers to that 110kV, 35kV main transformer year maximum load rate are less than or equal to 20% main transformer.

110kV, 35kV underloading main transformer accounting=underloading 110kV, 35kV main transformer number of units sum/110kV, total number of units × 100% of 35kV main transformer.Underloading main transformer refers to that 110kV, 35kV main transformer year maximum load rate year maximum load rate are less than or equal to 20% main transformer.

C3-3. in, press light-loaded circuit accounting

Definition: (Q/GDW565-2010), the medium-voltage line number of whole assessment area underloading accounts for the ratio of assessment area medium-voltage line total number according to " urban power distribution network operation level and evaluation of power supply capability directive/guide ".Light-loaded circuit refers to that medium-voltage line year maximum load rate is less than or equal to 30% circuit.

Middle pressure light-loaded circuit accounting=underloading medium-voltage line number sum/medium-voltage line total number × 100%.

C3-4. in, press underloading distribution transforming accounting

Definition: (Q/GDW565-2010), the distribution transforming number of units of whole assessment area underloading accounts for the ratio of the total number of units of assessment area distribution transforming according to " urban power distribution network operation level and evaluation of power supply capability directive/guide ".Underloading distribution transforming assignment becomes a year maximum load rate and is less than or equal to 20% distribution transforming.

Total number of units × 100% of middle pressure underloading distribution transforming accounting=underloading distribution transforming number of units sum/distribution transforming.

C3-5. the deviation of medium-voltage line load factor and economical operation load factor

Definition: the mean value of whole assessment area line load rate and its economical operation load factor absolute deviation.Load factor when economical operation load factor refers to that circuit reaches economical operation electric current.

C3-6. in, press the high circuit accounting of damaging

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), high ratio of damaging the number of lines the line is busy road total number in assessment area.Line loss per unit is greater than 5% circuit for the high circuit that damages.

High circuit accounting=lossy line travel permit number/circuit total number × 100% that damages of middle pressure.

C3-7. in, press the high distribution transforming accounting of damaging

Definition: in assessment area, high loss transformer number of units accounts for the ratio of the total number of units of distribution transforming.

The high distribution transforming accounting=S7(that damages of middle pressure is containing S8) and total number of units × 100% of transformer number of units sum/distribution transforming of early model more.

C3-8. every ten thousand yuan power grid asset year operation and maintenance cost

Definition: in assessment area, needed year operation and maintenance cost of every ten thousand yuan of power grid assets.

Every ten thousand yuan of operation and maintenance cost=electrical network power grid asset year, operation and maintenance cost/electrical network year total assetss.

C3-9. distributed power source generating efficiency

Definition: the electric weight that distributed power source reality provides within a certain period of time can provide the ratio of electric weight while accounting for distributed power source full-load run.

D1-1. integrated voltage qualification rate

Line voltage monitoring is divided into A, B, C, D tetra-class monitoring points.The rate of qualified voltage of power distribution network is evaluated to main consideration D class rate of qualified voltage, and D class rate of qualified voltage is 380/220V secondary network supply voltage qualification rate.Every hundred station power distribution transformers are at least established 2 voltage monitoring points.Monitoring point should be located at representational low-voltage network head and end and part responsible consumer place.

D1-2. harmonic wave qualification rate

D1-3. imbalance of three-phase voltage degree

Definition: the degree that refers to three-phase imbalance in three-phase electrical power system.Represent with the root-mean-square valve number percent of voltage, electric current negative phase-sequence fundametal compoment or zero sequence fundametal compoment and positive sequence fundametal compoment.

D2-1. Power Quality Detection terminal coverage rate

Definition: the number of users of whole assessment area installation Power Quality Detection terminal accounts for the ratio of assessment area electrical network total number of users.

Number of users/total number of users × 100% of Power Quality Detection terminal coverage rate=installation Power Quality Detection terminal.

D2-2. the adjustable reactive capability accounting of automatic voltage control system (AVC)

Definition: whole assessment area automatic voltage control system (AVC) reactive compensation capacity accounts for the ratio of assessment area reactive-load compensation total volume.

Automatic voltage control system (AVC) is adjustable reactive capability accounting=automatic voltage control system (AVC) reactive compensation capacity/reactive-load compensation total volume × 100%.

D2-3. meet responsible consumer power requirement accounting

Definition: the responsible consumer number that can meet power requirement accounts for the ratio of responsible consumer sum.

Meet responsible consumer power requirement accounting=can meet responsible consumer number/responsible consumer sum × 100% of power requirement.

D2-4. meet the ability (optional) that special user customizes electric power

For ensureing the uninterrupted power supply to user's high-quality, power distribution network also needs to have the ability that special user is customized to electric power that meets.This index is optional index.

Customization power technology is proposed by U.S. EPRI for 1992: high-power electric and electronic technology and Distribution Automation Technology are integrated, taking user, electric reliability and the quality of power supply are required as foundation, for user configures needed electric power.The definition of customization electric power: by power electronic equipment or claim static (static/solid-state) controller, for intermediate distribution system, with to the electric power that user was provided of quality of power supply sensitivity is reached to the required reliability level of user and quality of power supply level.

The development of modern industry to improve power supply reliability, improve the quality of power supply and proposed more and more higher requirement.Responsible consumer is the uninterrupted power supply that ensures high-quality, and often oneself is taken measures, and as uninterrupted power supply (ups) Unity is installed, but this is not the solution of economical rationality.Basic outlet is that power supply department can be according to user's needs, and the electric power supply of reliable and high-quality is provided, thereby, just produce taking Power Electronic Technique and modern control technology as basic customization power technology (Custom PowerTechnology).

Provide the ability of the electric power supply that meets user's particular requirement for evaluating power distribution network for user, select the index ability of electric power " meet special user customize ".

D2-5. client's industry expands service time limit compliance rate

Definition: assessment area during adding up in, can meet service number that client's industry expands the service time limit and account for client's industry and expand the total ratio of service.

Client's industry expansion service time limit compliance rate=can meet service number/client industry expansion in client's industry expansion service time limit to serve sum × 100%.

E1-1. distribution transforming information acquisition rate

Definition: whole assessment area can gather the basic operation information of distribution transforming and the distribution transforming number of units uploaded accounts for the ratio of the total number of units of assessment area electrical network distribution transforming.

Total number of units × 100% of distribution transforming number of units sum/distribution transforming of distribution transforming information acquisition rate=can gather the basic operation information of distribution transforming and upload.

E1-2. the concertedness of distribution infosystem

Definition: the degree that distribution infosystem is coordinated mutually, comprises between system that can information be shared, whether inter-system data standard is consistent etc.

E1-3. distribution infosystem coverage

This index is for evaluating distribution information system terminal user's coverage, and distribution information system terminal user generally comprises industry and commerce user and the resident of public substation transformer, individual line subscriber, all kinds of large, medium and small dedicated transformer user, all kinds of 380/220V power supply.It should be noted that while covering low-voltage customer due to distribution infosystem, not necessarily can cover substation transformer, therefore, when this index is evaluated, will carry out multianalysis to terminal user.

E1-4. the security of distribution infosystem

The security assignment net of distribution infosystem is guaranteed the ability of security information for power system.Each production link of intelligent grid has all been applied a large amount of present information communication technologys, and distribution infosystem relates to a large amount of electrical networks and power consumer information, and information security has been called intelligent grid safe and stable operation and the important leverage to social reliable power supply.

E2-1. intelligent substation accounting

Definition: the ratio of whole assessment area intelligent substation Zuo Shuozhan assessment area transformer station total seat number.

Intelligent substation ratio=intelligent substation seat number/transformer station total seat number × 100%.

E2-2. distribution power automation terminal coverage rate

Definition: according to " urban power distribution network operation level and evaluation of power supply capability directive/guide " (Q/GDW565-2010), the switch number of units that whole assessment area has " two is distant " or " three is distant " function accounts for the ratio of the total number of units of assessment area power network switch.

Total number of units × 100% of switch number of units sum/switch of distribution power automation terminal coverage rate=have " two is distant " or " three is distant " function.Two point in the direction of remote measurement and remote signalling, and three point in the direction of remote measurement, Remote control.

E2-3. distributing automation apparatus year available rate

Definition: according to " the practical examination detailed rules and regulations of power distribution automation (try) " No. (2011) 69, distribution (national grid give birth to) and " electrical power distribution automatization system operation maintenance management specification " (Q/GDW626-2011), in assessment area, the available rate of distributing automation apparatus in timing statistics.The main logout using distributing automation apparatus is as statistics foundation.Be >=95% to the basic demand of this index.

Distributing automation apparatus year available rate=(timing statistics × distributing automation apparatus sum-each distributing automation apparatus down time summation)/(timing statistics × distributing automation apparatus sum) × 100%.

Wherein, distributing automation apparatus down time comprises distributing automation apparatus unavailable time and the down time of distributing automation apparatus own that communication disruption causes.

E2-4. distribution network line fault position success rate

Definition: according to " the practical examination detailed rules and regulations of power distribution automation (try) " No. (2011) 69, distribution (national grid give birth to) and " electrical power distribution automatization system operation maintenance management specification " (Q/GDW626-2011), in assessment area, the accuracy that line fault positioned of distribution power automation terminal in during adding up.Be >=95% to the basic demand of this index.

Correct number of times/the localization of fault of distribution network line fault position success rate=localization of fault total degree × 100%.

E2-5. distribution network failure isolation action accuracy

Definition: according to " the practical examination detailed rules and regulations of power distribution automation (try) " No. (2011) 69, distribution (national grid give birth to) and " electrical power distribution automatization system operation maintenance management specification " (Q/GDW626-2011), in assessment area, the accuracy that fault isolated to action of distributing automation apparatus in during adding up.Be >=98% to the basic demand of this index.

Correct number of times/the fault isolation of distribution network failure isolation action accuracy=fault isolation total degree × 100%.

E2-6. power distribution network network reconstruct action accuracy

Definition: in assessment area, the accuracy that fault carried out to network reconfiguration action of distributing automation apparatus in during adding up.

Power distribution network network reconstruct action accuracy=network reconfiguration moves correct number of times/network reconfiguration total degree × 100%.

E2-7. protect fast outfit rate (optional)

Definition: in assessment area, the quantity that is equipped with protection fast accounts for the total ratio of protection.This index is optional index.

Protection adopts " isolating switch+optical-fiber longitudinal difference protection " Distribution Automation Technology fast; adopt this technology can judge rapidly fault zone, by fault isolation in minimum zone; and recover to be subject to greatest extent the block supply that perfects of fault effects; shorten power off time, reduce the area that has a power failure, improve power supply reliability.Adopt Distribution Automation Technology could complete in the short period of time the blocked operation of a large amount of switches, realize the fast quick-recovery of large-area power-cuts.

The protection outfit rate=outfit quantity of protection fast/protection sum × 100% fast.

E3-1. distributed power source access capacity accounting

Definition: whole assessment area distributed power source access capacity accounts for the ratio of assessment area total installation of generating capacity.According to " distributed power source access electric power network technique regulation " (Q/GDW480-2010), distributed power source total volume should not exceed 25% of peak load in upper level transformer-supplied region in principle.

Distributed power source access capacity accounting=distributed power source access capacity/electrical network total installation of generating capacity × 100%.

E3-2. controlled distribution formula power supply capacity accounting

Definition: in assessment area, the controlled distributed power source capacity of access power distribution network accounts for the ratio of access power distribution network distributed power source total volume.According to " specification is controlled in the operation of distributed power source access power distribution network ", (Q/GDW667-2011), controlled distribution formula power supply refers to have the ability of carrying out two-way communication with dispatching of power netwoks mechanism, can realize the distributed power source of remote monitoring and control function.

Distributed power source total volume × 100% of the distributed power source capacity/access of controlled distributed power source capacity accounting=controlled.

E3-3. the distributed power source prediction deviation of exerting oneself

Definition: the actual curve that distributed power source is exerted oneself departs from prediction curve degree.

E3-4. energy storage system capacity accounting

Definition: whole assessment area energy storage device access capacity accounts for the ratio of assessment area total installation of generating capacity.

Capacity of energy storing device accounting=capacity of energy storing device/electrical network total installation of generating capacity × 100%.

E3-5. controlled energy storage system capacity accounting

Definition: the controlled energy storage device capacity of access power distribution network in assessment area (do not comprise electric automobile fills change electric facility) accounts for the ratio of access power distribution network energy storage device total volume.The accumulator system that controlled accumulator system refers to realize remote monitoring and controls function.

Energy storage device total volume × 100% of the energy storage device capacity/access of controlled accumulator system ratio=controlled.

E4-1. intelligent electric meter coverage rate

Definition: the intelligent electric meter number that whole assessment area is installed accounts for the ratio of the total ammeter number of assessment area electrical network.

Intelligent electric meter coverage rate=intelligent electric meter number/total ammeter number × 100%.

E4-2. dynamic electricity price user accounting

Definition: the user under dynamic electricity price and load take family and the total ratio of load.

Customer charge number/customer charge sum × 100% under user and load proportion=dynamic electricity price under dynamic electricity price.

E4-5. electric automobile fills and changes electric facility density

Definition: the every 100km of whole assessment area ²electric automobile heavily changes electric facility seat number.

Electric automobile fills and changes electric facility density=electric automobile and fill and change the total seat of electric facility number/total area.

E4-4. adapt to microgrid access capability

Microgrid refers to by distributed power generation, energy storage device, energy conversion device, power load, monitoring and protective device etc. and forms, be one can realize generate power for their own use, the system of inner electric quantity balancing, surplus online.It both can be incorporated into the power networks with external electrical network, also can be from network operation.Microgrid has dual role, and for electrical network, the intelligent load that micro-electrical network can change as a size, can dispatch load for local electric system provides, and can within the several seconds, make response to meet system needs, provides strong support to large electrical network in good time; Can not affect at maintenance system client's load simultaneously; For user, micro-electrical network, as a customizable power supply, can meet the diversified demand of user, for example, strengthen local power reliability, reduce feeder loss, support to work as ground voltage, by utilizing used heat to raise the efficiency, the correction of lower voltage limit is provided, or as interruptible power service not etc.While being incorporated into the power networks, micro-electrical network and power distribution network carry out electric weight exchange three kinds of modes: to power distribution network transmission of electric energy, obtain electric energy and zero energy exchange from power distribution network.Because the distributed type renewable power supply in microgrid has randomness and intermittence, microgrid also/all can exert an influence safely to the quality of power supply of power distribution network, relay protection, O&M from net, power distribution network should have enough ability to adapt to the access of microgrid.Distributed power source total volume or load maximum demand in micro-electrical network, should not exceed the economic operation capacity of its line attachment or transformer, otherwise reply circuit or transformer carry out adaptability reform.

In order to ensure the safe operation of power distribution network, micro-electrical network access power distribution network should be followed correlation technique requirement.Micro-electrical network should possess certain self-balancing ability, and the interior distributed power source of micro-electrical network is effectively exported electric weight and at least should be met the need for electricity of important load, and leaves nargin.Micro-electrical network should be able to meet active power and the reactive power demand of its internal load, maintains the stable of builtin voltage and frequency.Micro-electrical network should be able to ensure the power supply reliability of inner important load, if desired gradable excision load.Micro-electrical network is switched to from net pattern and is divided into planned isolated island and unplanned property isolated island by grid-connected pattern, planned isolated island should hour carry out at micro-electrical network and distribution exchange between grids power, access micro-electrical network of 10kV or 380V power distribution network in three-phase equilibrium mode, should, obtaining after the agreement of dispatching of power netwoks mechanism, can be carried out by the grid-connected net that leaves.

E4-1. the capacity accounting of controllable burden

Controllable burden refers to the load that power department can Monitoring and Controlling, is generally realized by load management system.

Definition: can carry out the load proportion that direct load control or user's side load are controlled.

Load/electrical network total load × 100% that the capacity accounting of controllable burden=can carry out direct load control or user's side load are controlled.

E5-1. regenerative resource access capacity accounting

Definition: whole assessment area regenerative resource access capacity accounts for the ratio of assessment area total installation of generating capacity.Regenerative resource refers to can constantly to regenerate at occurring in nature, the energy of continuous utilization, has inexhaustible, nexhaustible feature, mainly comprises sun power, wind energy, biomass energy, geothermal energy and ocean energy etc.

Regenerative resource access capacity accounting=regenerative resource access capacity/net capacity × 100%.

E5-2. environment compatibility

This index is mainly evaluated aspects such as electrical network reduction of discharging, environmental improvements, also comprises the whether attractive in appearance of facilities and equipment, and whether ring main unit, circuit etc. and surrounding environment the aspect such as coordinating and unifying.

(5) individual event evaluation index scoring:

Be converted to concrete score according to standards of grading each individual event evaluation index numerical value that just step (4) draws of setting.Standards of grading refer to by certain scale system, the standardization form that can directly compare that various raw data are converted to.Scoring scale adopts centesimal system, ten point system and the five-grade marking system more.The method of determining index standards of grading has a lot, for example, can adopt fuzzy membership method.Fuzzy membership method nisi with subjection degree " belonging to " or describe " not belonging to " intermediary's degree of factor difference is with accurate mathematical linguistics, the one of ambiguity to be described.Same evaluation index may have different evaluation criterias and standards of grading at the different stages of development of power distribution network, consider feature and the part throttle characteristics in city, electrical network place.Taking " 110kV, 35kV meet N-1 main transformer accounting " as example, when " 110kV, 35kV meet N-1 main transformer accounting " is respectively 55%, 70%, 80%, 90%, 100% time, can set this index scoring is 0 point, 60 points, and 75 points, 90 points, 100 points.

Each individual event evaluation index numerical value is converted to concrete score and represents according to score curve, specifically as shown in Fig. 4-Figure 64.In Fig. 4-Figure 64, x axle is desired value, and y axle is score value, draws based on this score curve that obtains this index; The score curve of index is the membership function curve in Fuzzy Synthetic Evaluation.

(6) evaluation index system comprehensive grading:

S = Σ_{j = 1}^{n} S_{j} W_{j}

The size of weight has reflected the height of this index with respect to other index importance.Suppose to have two indexs to participate in relatively, if the two has equal importance, { 0.5,0.5} represents its weight to availability vector; If the former is stronger compared with the latter's importance, the former weighted value is larger than the latter weighted value, and for example weight vectors is { 0.6,0.4}.When index number is few, its weight is directly determined by expert conventionally.

Each individual event evaluation index weight is as shown in table 1 below.

Each individual event evaluation index weight of table 1

(7) according to the evaluation index system comprehensive grading of step (6), judge whether power distribution network reaches efficient operation, according to the height judgement of comprehensive grading, be divided into four ranks, and corresponding four scoring sections, that is:

1. 0 point～60 points: power distribution network does not reach efficient service requirement;

2. 60 points～75 points: power distribution network reaches efficient service requirement substantially;

3. 75 points～90 points: power distribution network meets efficient service requirement preferably;

4. 90 points～100 points: power distribution network is very well realized efficient operation.

Embodiment

Application the present invention has carried out investigation and analysis and assessment on the spot to intelligent distribution network demonstration area, Hexi Area, Nanjing southern, has carried out practical application in conjunction with west of a river intelligent grid construction project.Approximately 6.3 hundred million yuan of intelligent grid demonstration area, west of a river original plan gross investments, wherein the investment of rack transformation part is about 4,600 ten thousand yuan, is mainly used to further improve power supply reliability.As-Is Assessment result by analysis southern, west of a river power distribution network is known, the some index of correlation scores that relate to rack transformation are all very high, even majority is 100 points, as: 110kV, 35kV meet N-1 main transformer accounting, 110kV, 35kV and meet N-1 circuit accounting, middle pressure and meet in N-1 circuit accounting, the N-1 of transformer station situation and can turn for load accounting etc.This explanation rack transformation is very little on the impact of operation high efficiency, and its relevant construction project can be delayed according to the development of electrical network in good time.By further analysis, think in this area's power distribution network and have 5 track remodelling engineerings not urgent, can postpone.The amendment of this construction plan, saves intelligent grid demonstration area and invests approximately 1,220 ten thousand yuan, has improved electrical network economy, and can not reduce high efficiency index evaluation value.Meanwhile, part intelligent construction project still can advance on schedule, and along with the raising of intelligent degree, high efficiency index evaluation value also can further rise.

Power distribution network provided by the invention efficiently moves appraisal procedure intelligent power distribution web, high efficiency is moved and defined, and has proposed boundary condition, reaches security, reliability, economy, quality and the intelligent high unity of operation of power networks.When to each individual event evaluation index scoring, calculate according to the implication of each evaluation index, obtain the concrete data of evaluation index.And each individual event evaluation index numerical value is converted to concrete score, according to index weights, the concrete score weighting of each individual event evaluation index is gathered, the comprehensive grading that obtains assessment area intelligent power distribution network operation high efficiency, appraisal result can characterize the efficient operation level of institute's assessment power distribution network.Intelligent power distribution web, high efficiency operation evaluation index system provided by the invention is complete, clear, can reflect intelligent distribution network planning, construction and operation conditions comprehensively, assessment result will provide important foundation for Electric Power Network Planning and management and running personnel's decision-making work, this system is easy to utilize simultaneously, has higher practical value.

Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any amendment of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.

Claims

1. an intelligent power distribution web, high efficiency operation appraisal procedure, is characterized in that, described method comprises the steps:

(5) individual event evaluation index scoring:

(6) evaluation index system comprehensive grading:

2. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 1, it is characterized in that, in described step (3), security of distribution network refers to Supply Security, and power distribution network exits, loads at element and maintains the ability of continuous power supply in irregular variation situation; The safety indexes of described power distribution network comprises power distribution network loading condition index, turns for capacity index, anti-disaster ability index, adapts to distributed power source access capability index and coordination ability index;

Described anti-disaster ability index comprises that in disaster situation, power distribution network subtracts for load accounting and two individual event evaluation indexes of power distribution network customer interrupted accounting;

3. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 1, is characterized in that, in described step (3), and the ability of distribution network reliability confession under directions electric system to user's continued power; Described distribution network reliability index comprises Reliability Index, controller switching equipment reliability index and management and engineering reliability index;

Described management and engineering reliability index comprise uninterrupted operation accounting and two individual event evaluation indexes of repair based on condition of component coverage rate.

4. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 1, is characterized in that, in described step (3), described power distribution network economic index comprises comprehensive economy index, builds economic index and three aspects of performance driving economy index;

5. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 1, is characterized in that, in described step (3), described power distribution network quality index comprises power quality index and quality power index;

6. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 1, it is characterized in that, in described step (3), the intelligent index of power distribution network comprises level of IT application index, automatization level index, the interactive index of power supply, user interaction index and Development and Harmony index;

The interactive index of described power supply comprises distributed power source access capacity accounting, controlled distribution formula power supply capacity accounting, distributed power source exert oneself prediction deviation rate, energy storage system capacity accounting and five individual event evaluation indexes of controlled energy storage system capacity accounting;

7. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 1, it is characterized in that, in described step (4), determine the numerical value of each individual event evaluation index in described security of distribution network index A, distribution network reliability index B, power distribution network economic index C, power distribution network operation quality index D and the intelligent index E of power distribution network.

8. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 7, is characterized in that, determines the numerical value of individual event evaluation index in described security of distribution network index A:

A1-1, high pressure capacity-load ratio: be a certain power supply area, the ratio of converting equipment total volume and corresponding total load, represents with following formula:

Wherein: R _s-high pressure capacity-load ratio, unit is MVA/MW;

A1-3,110kV, 35kV heavy duty main transformer accounting:

A1-4,110kV, 35kV heavy-haul line accounting:

A1-5, middle pressure heavy-haul line accounting:

A1-6, middle ballast carry distribution transforming accounting:

A2-1,110kV, 35kV meet N-1 main transformer accounting:

A2-2,110kV, 35kV meet N-1 circuit accounting:

A2-3, middle pressure meet N-1 circuit accounting:

A3, anti-disaster ability index:

A4, adaptation distributed power source access capability:

A5-1, high pressure power transformation volume ratio:

9. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 1, is characterized in that, determines the numerical value of individual event evaluation index in described distribution network reliability index B:

B1-1, the average frequency of power cut of user:

B1-2. the average power off time of customer interrupted:

B1-3. power supply reliability:

If while disregarding external action, be denoted as RS-2;

B2-1, overhead transmission line fault outage rate:

B2-2. cable line fault outage rate:

B2-3. transformer fault outage rate:

B2-4. circuit breaker failure outage rate:

B2-5. switchgear fault outage rate:

B3-1. uninterrupted operation accounting:

B3-2. repair based on condition of component coverage rate:

10. intelligent power distribution web, high efficiency operation appraisal procedure as claimed in claim 7, is characterized in that, determines the numerical value of individual event evaluation index in described power distribution network economic index C:

C1-2. electrical network peak-valley ratio:

C1-3. peak load duration accounting:

Peak load duration accounting=peak load duration/timing statistics × 100%;

C2: build two individual event evaluation index numerical value in economy:

C2-1. Unit Assets year electricity sales amount:

C2-2. Unit Assets year maximum supply load:

C3-1.110kV, 35kV light-loaded circuit accounting:

C3-2.110kV, 35kV underloading main transformer accounting:

C3-3. in, press light-loaded circuit accounting:

C3-4. in, press underloading distribution transforming accounting:

C3-6. in, press the high circuit accounting of damaging:

C3-7. in, press the high distribution transforming accounting of damaging:

C3-9. distributed power source generating efficiency:

11. intelligent power distribution web, high efficiency operation appraisal procedures as claimed in claim 7, is characterized in that, determine the numerical value of individual event evaluation index in described power distribution network quality index D:

D1-1. integrated voltage qualification rate:

D1-2. harmonic wave qualification rate:

D1-3. imbalance of three-phase voltage degree:

D2-1. Power Quality Detection terminal coverage rate:

D2-3. meet responsible consumer power requirement accounting:

D2-5. client's industry expands service time limit compliance rate:

12. intelligent power distribution web, high efficiency operation appraisal procedures as claimed in claim 7, is characterized in that, determine the numerical value of individual event evaluation index in the intelligent index E of described power distribution network:

E1-1. distribution transforming information acquisition rate:

E1-2. the concertedness of distribution infosystem:

E1-3. distribution infosystem coverage:

E1-4. the security of distribution infosystem:

E2-1. intelligent substation accounting:

E2-2. distribution power automation terminal coverage rate:

E2-3. distributing automation apparatus year available rate:

E2-4. distribution network line fault position success rate:

E2-5. distribution network failure isolation action accuracy:

E2-6. power distribution network network reconstruct action accuracy:

E2-7. protect fast outfit rate:

E3-1. distributed power source access capacity accounting:

E3-2. controlled distribution formula power supply capacity accounting:

E3-3. the distributed power source prediction deviation of exerting oneself:

E3-4. energy storage system capacity accounting:

E3-5. controlled energy storage system capacity accounting:

E4-1. intelligent electric meter coverage rate:

E4-2. dynamic electricity price user accounting:

E4-3. electric automobile fills and changes electric facility density:

E4-4. adapt to microgrid access capability:

E4-5. the capacity accounting of controllable burden:

E5-1. regenerative resource access capacity accounting:

E5-2. environment compatibility: