CN104915897A - Computer implementation method for power grid planning evaluation service - Google Patents

Abstract

The invention relates to a computer implementation method for a power grid planning evaluation service, which comprises the steps of 1) an evaluation index setting stage which is used for completing evaluation index selection, index evaluating criterion and scoring standard selection and index weight setting; and 2) an evaluation stage in which power grid planning evaluation original data is inputted firstly, and then single item evaluation and comprehensive evaluation are carried out according to the index setting. Compared with the prior art, the computer implementation method provided by the invention has the advantages that an important role is played in improving the scientificity and the effectiveness of power grid planning, and the like.

Description

A kind of computer implemented method of Electric Power Network Planning evaluation assignment

Technical field

The present invention relates to Electric Power Network Planning infosystem, especially relate to a kind of computer implemented method of Electric Power Network Planning evaluation assignment.

Background technology

Power industry is one of mainstay of the national economy industry, along with the acceleration gradually of urbanization process, rapid economic development drive power demands constantly increase, and the public to the expectation of Supply Security in continuous lifting, Power System Planning is faced with a series of new contradiction of new problem needing solution badly.Therefore, when carrying out Power System Planning Theory research, need science of setting up, efficiently planning appraisal means and implementation.

Whether evaluation power network planning scheme is optimum, whether reasonable need realizes according to assessment indicator system urban distribution network structure.Electric Power Network Planning evaluation index is divided into a few class such as speed of development and scale, power grid security and quality, power network development efficiency and benefit, assets benefit, cost control, electrovalence policy, low carbonization, other policies.These indexs are quantized from different angles, assess the quality of various power network planning scheme authentic and validly.

The problems such as existing evaluation system ubiquity assess effectiveness is low, evaluation poor accuracy.

Summary of the invention

Object of the present invention is exactly provide a kind of computer implemented method of Electric Power Network Planning evaluation assignment to overcome defect that above-mentioned prior art exists.

Object of the present invention can be achieved through the following technical solutions:

A computer implemented method for Electric Power Network Planning evaluation assignment, is characterized in that, comprises the following steps:

1) evaluation index arranges the stage, selects and index weights setting for completing evaluation index selection, metrics evaluation criterion and standards of grading;

2) evaluation phase, first imports Electric Power Network Planning and evaluates raw data, then carry out single item evaluation and comprehensive evaluation according to setup measures.

Described evaluation index arranges the stage and is specially:

11) evaluation index storehouse is built;

12) based on evaluation index storehouse, before carrying out Electric Power Network Planning evaluation, this index system evaluated is built according to evaluating a part of index stressed in index for selection storehouse, direction.

Described step 11) in evaluation index be divided into single index and composite index, for single index, analyze its calculate needed for raw data and Data Source, for composite index, utilize single index or existing composite index setting target computing formula.

Described step 12) be specially:

121) select evaluation index, according to characteristic of city and part throttle characteristics, the characteristic of city of analyzing influence electric network composition and part throttle characteristics, determine which type of electric network composition this city need take, and obtains carrying out to this city the principle that Electric Power Network Planning need meet;

122) agriculture products standards of grading, in the process that electrical network is evaluated, the zone of reasonableness of agriculture products numerical value;

123) setting target weight, this index weights adopts normalized vector to represent.

The zone of reasonableness of described index value is the evaluation criteria of index, and the evaluation criteria of index has two kinds of forms of expression: point value and interval; For point value, as long as index value exceedes or is no more than this point value, namely index value meets the requirements; For interval, index value only just meets the requirements within this interval or outside interval.

Described evaluation phase is specially:

21) data pick-up and verification, builds unified exchanges data and data sharing platform, and the raw data needed for index calculate is carried out centralized stores and unified management according to unified common data model;

22) index calculate, after data pick-up completes, according to index dependence, agriculture products computation sequence, then calculate by ordered pair index according to computing formula;

23) index analysis and evaluation, to the comprehensive evaluation of evaluation object.

Described step 23) in the comprehensive evaluation of evaluation object is specially:

First with the evaluation criteria of index for criterion parameter numerical value, the evaluation criterion secondly index value being contrasted index calculates its scoring, finally according to the TOP SCORES of index weights size Calculation Estimation object.

Compared with prior art, the present invention is carrying out on the basis of comprehensive evaluation to single electrical network, by taking different comparative analysis modes, can find out the situation of single electrical network and electrical network feature, measurement different schemes quality and contribute to holding the development trend of electrical network, the science and validity improving Electric Power Network Planning is played an important role.

Accompanying drawing explanation

Fig. 1 is Electric Power Network Planning Evaluation operation process flow diagram;

Fig. 2 is Electric Power Network Planning evaluation procedure process flow diagram;

Fig. 3 is data pick-up and integration process schematic diagram;

Fig. 4 is metrics evaluation process flow diagram.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.

Embodiment

Data are divided into social economy, multi-energy data, power supply and demand, grid equipment, power-supply device, operation of power networks, canonical parameter, geography information totally eight large class data by integration Study on Power Grid Planning platform.Establish the basic database of layout data, planning process storehouse and program results storehouse on this basis.Basic database mainly comprises eight class data such as social economy, energy resources, and planning process storehouse mainly comprises the data such as social economy, grid equipment that planned project relates to, and program results storehouse mainly comprises planned project investment data.

As shown in Figure 1, Electric Power Network Planning Evaluation operation process of the present invention comprises evaluation index setting and evaluates two parts content.Stage is set in evaluation index, mainly completes evaluation index selection, metrics evaluation criterion and the task such as standards of grading selection and index weights setting.At evaluation phase, first import Electric Power Network Planning and evaluate raw data, then carry out single item evaluation and comprehensive evaluation according to setup measures.

Build assessment indicator system

First, need to build evaluation index storehouse.Evaluation index can be divided into single index and composite index, for single index, analyze its calculate needed for raw data and Data Source, for composite index, utilize single index or existing composite index setting target computing formula.

Based on evaluation index storehouse, before carrying out Electric Power Network Planning evaluation, build this index system evaluated according to evaluating a part of index stressed in index for selection storehouse, direction.Concrete steps are as follows:

1. evaluation index is selected

Stage is set in evaluation index and needs the first characteristic of city of analyzing influence electric network composition and part throttle characteristics, determine which type of electric network composition this city need take according to characteristic of city and part throttle characteristics, obtain carrying out to this city the principle that Electric Power Network Planning need meet.

2. agriculture products standards of grading

In the process that electrical network is evaluated, need the zone of reasonableness of agriculture products numerical value.When certain parameter is positioned within this zone of reasonableness, show substantially to meet the demands from the parameter of this angle electrical network or the system running state of its sign; Otherwise it is quite different.This " zone of reasonableness " i.e. evaluation criteria of index of index.

The evaluation criteria of index has two kinds of forms of expression: point value and interval.For the former, as long as index value exceedes or is no more than this point value, namely index value meets the requirements; For the latter, index value only just meets the requirements within this interval or outside interval.The determination of metrics evaluation criterion, not only will consider the regulation of relevant speciality fire protection technology, and will in conjunction with the long-time running of expert or working experience.

Standards of grading refer to by certain scale system, the standardization form that can directly compare various raw data converted to.Scoring scale many employings centesimal system, ten point system and the five-grade marking system.The method of agriculture products standards of grading has a lot, such as, can adopt fuzzy membership method.Fuzzy membership method subjection degree and nisi " belonging to " or describe " not belonging to " intermediary's degree of factor difference describe the one of ambiguity with accurate mathematical linguistics.

3. setting target weight

Evaluation index system also needs the importance degree between agriculture products, is index weights.Index weights adopts normalized vector to represent.The size of weight reflects the height of this index relative to other index importance.Suppose have two indices to participate in comparing, if the two has equal importance, then { 0.5,0.5} represents its weight to availability vector; If comparatively the latter's importance is stronger for the former, then the former weighted value is larger than the latter weighted value, and such as weight vectors is { 0.6,0.4}.

In assignment procedure, need to consider the significance level of index and the size of probability of happening, and the weight sum of same layer index is 1.Such as, " ' N-1 ' percent of pass ", " ' N-1 ' peak load loss percentage " and " ' N-1 ' average load loss percentage " are three and set its weight be respectively 0.2,0.4 and 0.4 with layer index, and three's weight sum is 1.

Electric Power Network Planning evaluates implementation procedure as shown in Figure 2.Electric Power Network Planning evaluates implementation procedure as shown in Figure 2.

1) data pick-up and verification

First, build unified exchanges data and data sharing platform, the raw data needed for index calculate is carried out centralized stores and unified management according to unified common data model.It is formed as shown in Figure 3.

The concrete function of each data Layer is as follows:

Data import layer (ETL): ETL platform is responsible for accessing the data extracting each business application system, changes, be loaded into data center according to unified common data model.

Data sharing layer (ODS): ODS, according to unified common data model, integrates the data and the operation system data image that store each business application system of enterprise.Meanwhile, provide business data and share switching plane, provide unified support for each business datum exchanges.

Data storage layer (EDW): comprise data warehouse (DW) and Data Mart (DM).DW, according to unified common data model, carries out light weight according to Data subject to ODS data and gathers processing and do not store on schedule.DM, based on DW data, for meeting specific transactions application demand, stores according to multi-dimensional fashion, generates the data cube that decision making-oriented is analyzed.

Application function layer: utilize OLAP and BI display technique, the functions such as subject analysis, index monitoring analysis, Report Server Management, query statistic and custom feature district are provided, realize the applied analysis of electric power enterprise core business, meet the data analysis needs of corporate decision's layer, administration and supervision authorities.

Determine the raw data needing to extract again according to the index chosen, carry out data pick-up according to such scheme, carry out data check according to the desired value reasonable interval arranged in index storehouse simultaneously.

2) index calculate

After data pick-up completes, according to index dependence, agriculture products computation sequence, then calculate by ordered pair index according to computing formula.

3) index analysis and evaluation

To the Process of Comprehensive Assessment of evaluation object, first with the evaluation criteria of index for criterion parameter numerical value, the evaluation criterion secondly index value being contrasted index calculates its scoring, finally according to the TOP SCORES of index weights size Calculation Estimation object.Metrics evaluation flow process as shown in Figure 4.

In Fig. 4, solid arrow represents the operation to single index, and dotted arrow represents the operation to index system.

1. desired data is evaluated

From integrated Electric Power Network Planning platform, read the planning essential information of electrical network, comprise the geographical wiring diagram of present situation electrical network and planning electrical network, electric hookup and electrical network fundamental statistics, read index bottom data.Electric Power Network Planning assessment indicator system bottom index calculate desired data, comprising:

(1) planning boundary data;

(2) geographical wiring diagram of present situation electrical network and each programme and electric hookup;

(3) 220kV and 110 (35) kV transformer stations and 110 (35) kV circuits " N-1 ", " N-2 " etc.;

(4) percent of pass, load loss size and loss percentage is verified;

(5) the average power off time of each level Grid and the data such as frequency, average power supply availability;

(6) initial cost, multi-stage invest, stage economic return etc. of each level Grid;

(7) each level Grid stage power supply capacity, electricity and load;

(8) each level Grid line loss value and line loss per unit;

(9) load value of equipment (as transformer and circuit) and load factor in each level Grid;

(10) electrical network conceptual data, as data such as load level, device parameter and device attributes.

2. evaluation procedure

The evaluation method of present situation electrical network and single programme is similar, and its evaluation procedure is specific as follows:

(1) single index scoring

After completing layout data importing, the standards of grading of contrast index, turn to centesimal system scoring by index bottom data specification.

(2) comprehensive grading

According to the superior and the subordinate between index and sane level relation and index weights size, calculate the scoring of whole assessment indicator system.For the integral status of electrical network is described, on the basis having calculated each bottom index, analytical hierarchy process can be utilized successively upwards to calculate, until calculate the comprehensive grading of whole electrical network.

$S=\underset{i=1}{\overset{n}{\Σ}}SiWi$

Wherein, the scoring of arbitrary non-low layer index in S representational level structure, n (n >=1) represents lower floor's index number of index S, and Si represents the scoring of lower floor index i (1≤i≤n), and Wi represents the weight of lower floor index i.By lower floor's index scoring and Weight summation, calculate index scoring.So successively upwards calculate, the comprehensive grading of programme A can be drawn.

(3) evaluation result

Folk prescription case (comprising present situation electrical network) evaluation is the basis that Electric Power Network Planning is evaluated.Adopt identical method, can realize to present situation electrical network, middle year each programme and target year each programme evaluation.

For the evaluation of multiple scheme, can evaluate one by one multiple programme, evaluation result is carried out lateral comparison, comprise numerical value and the scoring size of corresponding index, then compared result be analyzed.According to assessment indicator system structure, successively upwards contrast index value and the scoring of different schemes, adopt leading factor analytical approach, can according to the sequence of influence degree, list the front X (X=1,2 causing different schemes scoring to there is gap ...) item index, thus provide the dominant index causing scheme there are differences, for the decision-making of Grid manager provides foundation.

In sum, the present invention is carrying out on the basis of comprehensive evaluation to single electrical network, by taking different comparative analysis modes, can find out the situation of single electrical network and electrical network feature, measurement different schemes quality and contribute to holding the development trend of electrical network, the science and validity improving Electric Power Network Planning is played an important role.

Claims (7)

1. a computer implemented method for Electric Power Network Planning evaluation assignment, is characterized in that, comprises the following steps:

1) evaluation index arranges the stage, selects and index weights setting for completing evaluation index selection, metrics evaluation criterion and standards of grading;

2) evaluation phase, first imports Electric Power Network Planning and evaluates raw data, then carry out single item evaluation and comprehensive evaluation according to setup measures.

2. the computer implemented method of a kind of Electric Power Network Planning evaluation assignment according to claim 1, is characterized in that, described evaluation index arranges the stage and is specially:

11) evaluation index storehouse is built;

12) based on evaluation index storehouse, before carrying out Electric Power Network Planning evaluation, this index system evaluated is built according to evaluating a part of index stressed in index for selection storehouse, direction.

3. the computer implemented method of a kind of Electric Power Network Planning evaluation assignment according to claim 2, it is characterized in that, described step 11) in evaluation index be divided into single index and composite index, for single index, analyze its calculate needed for raw data and Data Source, for composite index, utilize single index or existing composite index setting target computing formula.

4. the computer implemented method of a kind of Electric Power Network Planning evaluation assignment according to claim 2, is characterized in that, described step 12) be specially:

121) select evaluation index, according to characteristic of city and part throttle characteristics, the characteristic of city of analyzing influence electric network composition and part throttle characteristics, determine which type of electric network composition this city need take, and obtains carrying out to this city the principle that Electric Power Network Planning need meet;

122) agriculture products standards of grading, in the process that electrical network is evaluated, the zone of reasonableness of agriculture products numerical value;

123) setting target weight, this index weights adopts normalized vector to represent.

5. the computer implemented method of a kind of Electric Power Network Planning evaluation assignment according to claim 4, is characterized in that, the zone of reasonableness of described index value is the evaluation criteria of index, and the evaluation criteria of index has two kinds of forms of expression: point value and interval; For point value, as long as index value exceedes or is no more than this point value, namely index value meets the requirements; For interval, index value only just meets the requirements within this interval or outside interval.

6. the computer implemented method of a kind of Electric Power Network Planning evaluation assignment according to claim 1, it is characterized in that, described evaluation phase is specially:

21) data pick-up and verification, builds unified exchanges data and data sharing platform, and the raw data needed for index calculate is carried out centralized stores and unified management according to unified common data model;

22) index calculate, after data pick-up completes, according to index dependence, agriculture products computation sequence, then calculate by ordered pair index according to computing formula;

23) index analysis and evaluation, to the comprehensive evaluation of evaluation object.

7. the computer implemented method of a kind of Electric Power Network Planning evaluation assignment according to claim 6, is characterized in that, described step 23) in the comprehensive evaluation of evaluation object is specially:

First with the evaluation criteria of index for criterion parameter numerical value, the evaluation criterion secondly index value being contrasted index calculates its scoring, finally according to the TOP SCORES of index weights size Calculation Estimation object.