CN102750586A - Method for assessing operation level and power supply capacity based on large-scale enterprise power supply network - Google Patents
Method for assessing operation level and power supply capacity based on large-scale enterprise power supply network Download PDFInfo
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Abstract
The invention belongs to the technical field of assessment of operation level and power supply capacity of power supply networks and particularly relates to a method for assessing operation level and power supply capacity based on a large-scale enterprise power supply network. The method comprises the steps of A, determining an assessment range; B, collecting, validating and assessing basic data; C, exporting single assessment index data; D, calculating the score of the single assessment index; E, obtaining scores of the operation level and the power supply capacity; and F, analyzing an assessment result. The method is suitable for assessment of the operation level and the power supply capacity of the large-scale enterprise power supply network, can reflect the current situation of the enterprise power supply network directly and quantificationally, and provides a reliable and practical assessment method for enterprise decision makers to carry power supply network system improvement and special control and to formulate and program decisions. Besides, the power supply network construction and project reconstruction can be arranged scientifically, reasonably and effectively according to the assessment method in actual assessment and planning work, and great economic benefits are brought for investment of power supply optimization performed by enterprises.
Description
Technical field
The invention belongs to power supply network operation level and power supply capacity assessment technology field, be specifically related to a kind of operation level and power supply capacity appraisal procedure based on large enterprise's power supply network.
Background technology
Electric power is that modern enterprise is produced the most important energy and power, and the supply situation of electric power directly has influence on the ordinary production of modern enterprise, and enterprise be unable to do without the cooperation and the support of power supply network again simultaneously.Because large enterprise's scale is big, power consumption is many, requires power supply reliability high, exists quantity-produced equipment many, and rate of load condensate is higher, and most of power load is the high capacity impact load, and consequent higher hamonic wave is bigger to the safety effects of power supply network.Simultaneously, these large enterprises generally found the factory early, and most of power-supply units are aging, had a strong impact on power supply reliability; Add that the planning of enterprises power supply network carries no weight, weak foundation, power supply network construction for many years has been merely deals with load growth; And deeply do not consider power supply safety reliability service and economy; Accident of power supply takes place in power supply Netease, has a strong impact on the ordinary production of enterprise, brings unnecessary economic loss.
At present, some large enterprises lack system, the power supply network operation level of science and analyzing evaluation methods of power supply capacity, to power supply network existing can not give the order of severity that goes wrong quantitatively with the problem that possibly occur.Therefore; For science, assess the bulk supply ability of current large enterprise power supply network exactly, correctly assess the problem that the present situation electrical network exists, improve the operation conditions of enterprises power supply network; Avoid or minimizing accident odds; Improve enterprise's power supply network economic benefit, guarantee the security and the reliability of power supply network, press for the large enterprise's power supply network evaluation system and the method for the system of foundation.
Summary of the invention
The present invention be directed to present appraisal procedure does not assess the operation level and the power supply capacity of large enterprise's power supply network as yet quantitatively; A kind of operation level and power supply capacity appraisal procedure based on large enterprise's power supply network proposed; This method is applicable to carries out assessment to the operation level of enterprise's power supply network and power supply capacity; The operation level and the power supply capacity evaluation system of a cover large enterprise power supply network have been set up; This method is formulated evaluation index to operation level and power supply capacity two aspects, and corresponding each evaluation index is equipped with corresponding scoring formula, through calculating the present situation situation that intuitively reflects enterprise's power supply network operation level and power supply capacity quantitatively.
The objective of the invention is to adopt following technical proposals to realize:
A kind of operation level and power supply capacity appraisal procedure based on large enterprise's power supply network, its improvements are that said method comprises the steps:
A, confirm scope of assessment;
B, collection and verification assessment basic data;
C, derivation individual event evaluation index data;
D, the said individual event evaluation index score of calculating;
E, obtain operation level and power supply capacity score;
F, analysis and evaluation result.
Preferably, in the said steps A, according to enterprise's needs, to enterprise's power supply network the whole network or local power net, or the different phase of power supply network planning construction (early stage of planning construction or later stage), the scope of assessment of the affirmation enterprise's power supply network of assessing.
Preferably, among the said step B, collect the also assessment basic data of the said enterprise of verification power supply network; Said assessment basic data comprises the operation level and the power supply capacity of said enterprise power supply network; Said operation level comprises equipment, equipment operation condition and operation of power networks situation; Said power supply capacity comprises load capacity and changes energy supply power.
More preferably, said equipment comprises:
Operation surpasses 30 years circuit ratios (%): the operation time limit is no less than the line length sum/total line length in 30 years;
Operation surpasses 20 years transformer ratios (%): the operation time limit is no less than the transformer platform in 20 years and counts the total platform number of sum/transformer;
Operation surpasses 20 years switch ratios (%): the operation time limit is no less than the switch-desk in 20 years and counts the total platform number of sum/switch;
High loss transformer ratio (%): S7 and more early stage transformer platform are counted the total platform number of sum/transformer; High loss transformer refers to that S7 reaches the more transformer of early model, because of it has exceeded " three-phase distribution transformer efficiency limit value and energy-conservation evaluation of estimate " (GB20052) efficiency limit value of middle regulation;
Switch does not have oiling rate (%): non-oil switch platform is counted the total platform number of sum/switch.
More preferably, said equipment operation condition comprises:
Line outage rate (inferior/hundred kilometer year): every 100km line outage number of times in the whole year;
Transformer fault outage rate (inferior/hundred year): per hundred transformer fault frequencies of power cut in the whole year;
Switchgear fault outage rate (inferior/hundred year): the fault outage number of times of per hundred switchgears in the whole year.
More preferably, said operation of power networks situation comprises:
The quality of power supply: comprise the qualified ratio of harmonic voltage and electric current, the qualified ratio of voltage deviation, the qualified ratio of imbalance of three-phase voltage degree and voltage fluctuation and the qualified ratio of flickering;
The qualified ratio of harmonic voltage and electric current (%): harmonic voltage and the current value measurement point number/overall measurement point number in the specialized range that is up to state standards.Said national Specification scope refers to: " quality of power supply utility network harmonic wave " (GB/T 14549));
The qualified ratio of voltage deviation (%): the voltage deviation value measurement point number/overall measurement point number in the specialized range that is up to state standards.Said national Specification scope refers to: " quality of power supply supply voltage deviation " (GB/T l2325);
The qualified ratio of imbalance of three-phase voltage degree (%): the imbalance of three-phase voltage degree measurement point number/overall measurement point number in the specialized range that is up to state standards.Said national Specification scope refers to: " quality of power supply three-phase voltage allow degree of unbalancedness " (GB/T15543);
The qualified ratio of voltage fluctuation and flickering (%): voltage fluctuation and the flickering value measurement point number/overall measurement point number in the national Specification scope.Said national Specification scope refers to: " quality of power supply voltage fluctuation and flickering " (GB/T 12326));
Reactive-load compensation degree: refer to power factor;
Loss (%): (power supply enterprise is sold to the electric weight-enterprise statistics power consumption of enterprise)/power supply enterprise is sold to the electric weight of enterprise; Said enterprise statistics power consumption refers to that enterprise is voluntarily to the statistics power consumption in power unit such as workshop, office and living quarters.
More preferably, said load capacity comprises:
Hold and carry ratio: the total load (kW) of converting equipment total volume (the kVA)/correspondence of (assessment area that enterprise delimit) same electric pressure power supply network in the assessment area;
Circuit heavy duty ratio (%): the heavy-loaded line travel permit is counted sum/circuit total number; Said heavy-haul line refers to that circuit year maximum load rate meets or exceeds 70% and continue more than 1 hour;
Transformer heavy duty ratio (%): the overload transformer platform is counted the total platform number of sum/transformer; Said overload transformer refers to that transformer year maximum load rate meets or exceeds 80% and continue more than 2 hours.
More preferably, said commentaries on classics energy supply power comprises:
Circuit satisfies N-1 ratio (%): the number of lines sum/circuit total number that satisfies the N-1 principle.Said N-1 principle is with reference to the term definition in the industry standard " power system safety and stability guide rule " (DL 755);
Different substation interconnector ratio (%): the number of lines sum/circuit total number of contact is arranged with different substation.
Preferably, among the said step C, utilization scoring expression formula derives each individual event evaluation index data; According to collecting the basic data come up; Calculate the achievement data that needs through the formula that defines in table 1, the table 2 index implication; Like the circuit ratio (%) of the operation time limit in the index above 30 years; Collecting the basic data of coming up is that the operation time limit surpasses the number of lines in 30 years and the circuit total number of power supply network, need ask for the index desired data to be:
Said each individual event evaluation index data surpass 30 years circuit ratios for operation; Operation surpasses 20 years transformer ratios; Operation surpasses 20 years switch ratios; High loss transformer ratio; Switch does not have the oiling rate; The line outage rate; The transformer fault outage rate; Switchgear fault outage rate; The quality of power supply; The qualified ratio of harmonic voltage and electric current; The qualified ratio of voltage deviation; The qualified ratio of imbalance of three-phase voltage degree; The qualified ratio of voltage fluctuation and flickering; The reactive-load compensation degree; Loss; Hold and carry ratio; In circuit heavy duty ratio and the heavily loaded ratio of transformer any one.
Preferably, the said evaluation index score of the calculating of said step D comprises the steps:
The numerical value of a, acquisition individual event evaluation index;
B, calculate the score of each individual event evaluation index.
Preferably, in the said step e,, obtain the operation level and the power supply capacity integrate score of enterprise's power supply network to the weighted sum of said individual event evaluation index data score.
Preferably, in the said step F, analyzing the assessment result of operation level and power supply capacity, said assessment result is divided into height, higher and general three grades, is that general part is analyzed and improved to the assessment result rank.
With the prior art ratio, the beneficial effect that the present invention reaches is:
1, the present invention provides the theoretical foundation that quantizes for the operation level and the power supply capacity assessment of large enterprise's power supply network.Large enterprise lacks the appraisal procedure of power supply network operation level and power supply capacity aspect at present; The present invention is directed to operation level and power supply capacity two aspects and formulate evaluation index; Corresponding each evaluation index is equipped with corresponding scoring formula; Through calculating the present situation situation reflect enterprise's power supply network operation level and power supply capacity intuitively, for large enterprise's power supply network is carried out operation level and power supply capacity is assessed theoretical foundation and the support that science is provided.
2, the evaluation system of the present invention's proposition is scientific and reasonable, can a kind of reliable, practical appraisal procedure be provided for the business decision personnel.The achievement data that evaluation system proposes has unified standardization requirement; Be easy to obtain; With a high credibility, can contain the main aspect of enterprise's power supply network operation level and power supply capacity basically, have very strong operability; And it is separate between the index; Do not repeat mutually, objective, reflected the present situation problem that enterprise's power supply network exists exactly, can carry out the regulation of power supply network system and special administration for the business decision personnel formulate enterprise's power supply network, work out a plan decision-making and be directed against planning construction after the aspects such as assessment of economic benefit of power supply network comparatively reliable, practical appraisal procedure is provided.
3, the present invention is applied to can be enterprise and bring huge economic benefit for large enterprise's power supply network decision-making level of working out a plan.This evaluation system can instruct large enterprise in the assessment of reality and planning science, arrange power supply network construction and upgrading project rationally, effectively; Guarantee safe, reliable, the economical operation of enterprise's power supply network, for the investment of optimization of enterprises power supply network brings huge economic benefit.
Description of drawings
Fig. 1 is provided by the invention based on large enterprise's power supply network evaluation index system structural drawing;
Fig. 2 is the process flow diagram of the appraisal procedure based on large enterprise's power supply network operation level and power supply capacity provided by the invention.
Embodiment
Do further to specify below in conjunction with the accompanying drawing specific embodiments of the invention.
The evaluation index system of the appraisal procedure based on large enterprise's power supply network operation level and power supply capacity provided by the invention is as shown in Figure 1, and evaluation index system is made up of operation level and power supply capacity two aspects.Operation level is divided into equipment, equipment operation condition and operation of power networks situation three partial contents; Power supply capacity is divided into load capacity and changes energy supply power two parts content.
Equipment comprises:
Operation surpasses 30 years circuit ratios (%): the operation time limit is no less than the line length sum/total line length in 30 years.This index is the situation that is used for reflecting the old circuit of assessment area.Consideration is in single line, and the actual motion time limit of different line segments maybe be different, so this index is added up by Route Length.When statistics, only the length of the line segment of the operation time limit above 30 years is added up addition.
Operation surpasses 20 years transformer ratios (%): the operation time limit is no less than the transformer platform in 20 years and counts the total platform number of sum/transformer.This index is the situation that is used for reflecting the old transformer of assessment area.Mainly be according to the transformer life phase in the transformer order technical conditions 20 years and above requirement.Operation surpasses the transformer in 20 years, and the economy of its operation, security and energy efficiency indexes all descend to some extent.
Operation surpasses 20 years switch ratios (%): the operation time limit is no less than the switch-desk in 20 years and counts the total platform number of sum/switch.This index is the situation that is used for reflecting the old switch of assessment area.According to the mechanical life and the electrical endurance of switch, operation surpasses at 20 years and above switch, and its reliability of operation, safety indexes all descend to some extent.
High loss transformer ratio (%): S7 and more the transformer platform of early model count the total platform number of sum/transformer.This index be for transformer in the assessment area in the present situation aspect the energy-saving and emission-reduction.High loss transformer refers to that S7 reaches the more transformer of early model, because of it has exceeded efficiency limit value of regulation in " three-phase distribution transformer efficiency limit value and energy-conservation evaluation of estimate " (GB 20052).
Switch does not have oiling rate (%): non-oil switch platform is counted the total platform number of sum/switch.This index is that switch does not have oiling transformation situation in the evaluation assessment area.
Equipment operation condition comprises:
Line outage rate (inferior/hundred kilometer year): every 100km line outage number of times in the whole year.Specifically can define with reference to " electric power system user's power supply reliability assessment routine " relational term;
Transformer fault outage rate (inferior/hundred year): per hundred transformer fault frequencies of power cut in the whole year.Specifically can define with reference to " electric power system user's power supply reliability assessment routine " relational term;
Switchgear fault outage rate (inferior/hundred year): the fault outage number of times of per hundred switchgears in the whole year.Specifically can define with reference to " electric power system user's power supply reliability assessment routine " relational term.
The operation of power networks situation comprises:
The quality of power supply: comprise the qualified ratio of harmonic voltage and electric current, the qualified ratio of voltage deviation, the qualified ratio of imbalance of three-phase voltage degree and voltage fluctuation and the qualified ratio of flickering;
The qualified ratio of harmonic voltage and electric current (%): harmonic voltage and the current value measurement point number in the specialized range that is up to state standards; Said national Specification scope refers to: " quality of power supply utility network harmonic wave " (GB/T 14549));
The qualified ratio of voltage deviation (%): the voltage deviation value measurement point number in the specialized range that is up to state standards; Said national Specification scope refers to: " quality of power supply supply voltage deviation " (GB/T l2325);
The qualified ratio of imbalance of three-phase voltage degree (%): the imbalance of three-phase voltage degree measurement point number in the specialized range that is up to state standards; Said national Specification scope refers to: " quality of power supply three-phase voltage allows degree of unbalancedness " (GB/T 15543);
The qualified ratio of voltage fluctuation and flickering (%): voltage fluctuation and the flickering measurement point number/overall measurement point number in the national Specification scope; Said national Specification scope refers to: " quality of power supply voltage fluctuation and flickering " (GB/T 12326));
Reactive-load compensation degree: refer to power factor.This evaluation index adopts the reactive-load compensation situation in the power factor value reflection assessment area;
Loss (%): (power supply enterprise is sold to the electric weight-enterprise statistics power consumption of enterprise)/power supply enterprise is sold to the electric weight of enterprise.Said enterprise statistics power consumption refers to that enterprise is voluntarily to the statistics power consumption in each power unit such as workshop, office and living quarters etc.This evaluation index comprises technological attrition such as line loss that enterprise produces, transformer loss and management loss etc. in electric process.
Load capacity comprises:
Hold and carry ratio: the total load (kW) of the converting equipment total volume (kVA) of same electric pressure power supply network/correspondence in the assessment area;
Circuit heavy duty ratio (%): the heavy-loaded line travel permit is counted sum/circuit total number; Said heavy-haul line refers to that circuit year maximum load rate meets or exceeds 70% and continue more than 1 hour, disregards the situation of the heavy load that occurs in short-term under the circuit abnormal running mode;
Transformer heavy duty ratio (%): the overload transformer platform is counted the total platform number of sum/transformer; Said overload transformer refers to that transformer year maximum load rate meets or exceeds 80% and continue more than 2 hours, disregards the heavy load situation that occurs in short-term.
Changeing energy supply power comprises:
Circuit satisfies N-1 ratio (%): the number of lines sum/circuit total number that satisfies the N-1 principle.This index is to estimate the Supply Security of circuit under the single failure condition, investigates the commentaries on classics energy supply power of circuit.
Said N-1 principle is with reference to the term definition in the industry standard " power system safety and stability guide rule " (DL 755).
Different substation interconnector ratio (%): the number of lines sum/circuit total number of contact is arranged with different substation.
When enterprise's power supply network is carried out operation level and power supply capacity assessment; According to each item index shown in Fig. 1; Collect enterprise evaluation zone dependent evaluation basic data; Integrated use the whole bag of tricks and means comprise and consulting and analysis of data record, hand computation, computer software analysis etc., obtain the numerical value of each individual event evaluation index.Comprehensive each numerical value is assessed enterprise's bulk supply net, finds out the problem that enterprise's power supply network exists, and weighs the present situation of enterprise's power supply network.
Appraisal procedure based on large enterprise's power supply network operation level and power supply capacity provided by the invention adopts the calculating marking mode quantitatively to provide assessment result to each evaluation index.
Appraisal procedure based on large enterprise's power supply network operation level and power supply capacity provided by the invention comprises the steps that process flow diagram is as shown in Figure 2:
A, confirm scope of assessment;
According to enterprise's needs, to enterprise's power supply network the whole network or local power net, or the different phase of power supply network planning construction (early stage of planning construction or later stage), the scope of assessment of the affirmation enterprise's power supply network of assessing.
B, collection and verification assessment basic data;
Collect the also assessment basic data of the said enterprise of verification power supply network; Said assessment basic data comprises the operation level and the power supply capacity of said enterprise power supply network; Said operation level comprises equipment, equipment operation condition and operation of power networks situation; Said power supply capacity comprises load capacity and changes energy supply power.
C, derivation individual event evaluation index data;
According to collecting the basic data come up; Calculate the achievement data that needs through the formula that defines in table 1, the table 2 index implication; As there being the operation time limit to surpass the circuit ratio (%) in 30 years in the index; Collecting the basic data of coming up is that the operation time limit surpasses the number of lines in 30 years and the circuit total number of power supply network, need ask for the index desired data to be:
Said each individual event evaluation index data surpass 30 years circuit ratios for operation; Operation surpasses 20 years transformer ratios; Operation surpasses 20 years switch ratios; High loss transformer ratio; Switch does not have the oiling rate; The line outage rate; The transformer fault outage rate; Switchgear fault outage rate; The quality of power supply; The qualified ratio of harmonic voltage and electric current; The qualified ratio of voltage deviation; The qualified ratio of imbalance of three-phase voltage degree; The qualified ratio of voltage fluctuation and flickering; The reactive-load compensation degree; Loss; Hold and carry ratio; In circuit heavy duty ratio and the heavily loaded ratio of transformer any one.
D, the said individual event evaluation index score of calculating:
The numerical value of a, acquisition individual event evaluation index: collect the power supply network related data by assessment enterprise, integrated use the whole bag of tricks and means comprise and consulting and analysis of data record, hand computation, computer software analysis etc., obtain the numerical value of each individual event evaluation index.
B, the scoring of calculating the individual event evaluation index:
Each individual event evaluation index numerical value is adopted evaluation index scoring formula (each evaluation index scoring formula is shown in table 1, table 2), calculate the score that obtains each individual event evaluation index.
E, obtain operation level and power supply capacity score:
Each individual event evaluation index data score is carried out weighted sum to operation level and power supply capacity each several part after multiply by separately weight, calculates operation level and power supply capacity integrate score.
Annotate: use the present invention when different enterprises power supply network is carried out operation level and assessed with power supply capacity, can be according to the concrete condition of enterprise's power supply network, the weight of evaluation index is adjusted accordingly.
F, analysis and evaluation result:
Operation level assessment result total points is 50 minutes, wherein equipment 15 minutes, equipment operation condition 20 minutes, operation of power networks situation 15 minutes.
Power supply capacity assessment result total points is 50 minutes, wherein load capacity 30 minutes, commentaries on classics energy supply power 20 minutes.
Comprehensive assessment total points as a result is 100 minutes, wherein operation level 50 minutes, power supply capacity 50 minutes.
The conclusion of comprehensive assessment is divided into: three grades of " height ", " higher " and " generally ".Scoring average 90% and more than assessment result be " height "; The assessment result of scoring average between 70%～90% is " higher "; Scoring average 70% and below assessment result be " generally ".
To assessment result is the part of " generally ", should propose to analyze and innovative approach to the deficiency of operation level and power supply capacity existence.Evaluation index partial evaluation result and the evaluation index interval reference table of marking is as shown in table 3.
The evaluation index of I, large enterprise's power supply network operation level, index implication, scoring formula and weight are as shown in table 1.
The evaluation index of table 1 operation level, index implication, scoring formula and weight
Wherein: 1. the operation time limit tenure of use of equipment during of referring to enterprise's power supply network from first input operation of power networks to assessment.2. the x in the scoring formula is each desired value, and y is the score of this index, keeps two behind the index score radix point.
The evaluation index of II, enterprise's power supply network power supply capacity, index implication, scoring formula and weight are as shown in table 2.
The evaluation index of table 2 power supply capacity, index implication, scoring formula and weight
Wherein: the x in the scoring formula is each desired value, and y is the score of this index, keeps two behind the index score radix point.
III, evaluation index partial evaluation result and the evaluation index interval reference table of marking is as shown in table 3.
Table 3 evaluation index partial evaluation result and the evaluation index interval reference table of marking
Embodiment
Operation level and power supply capacity appraisal procedure based on large enterprise's power supply network that the present invention will propose are applied in China first Heacy machine Stock Co., Ltd's power supply assessment.Assessment area is used the appraisal procedure of the present invention's proposition after being confirmed by the said firm, calculates operation level and power supply capacity each item index score situation of the said firm's assessment area power supply network, and its result sees table 4.
The operation level of table 4 China first Heacy machine Stock Co., Ltd power supply network and power supply capacity assessment result
| Evaluation index | Full marks | The assessment score |
| One, operation level | 50 | 38.67 |
| 1, equipment | 15 | 11.16 |
| Operation surpasses 30 years circuit ratios (%) | 3 | 3 |
| Operation surpasses 20 years transformer ratios (%) | 3 | 2.3 |
| Operation surpasses 20 years switch ratios (%) | 3 | 1.61 |
| High loss transformer ratio (%) | 4 | 3.14 |
| Switch does not have oiling rate (%) | 2 | 1.11 |
| 2, equipment operation condition | 20 | 15.43 |
| Line outage rate (inferior/hundred kilometer year) | 6 | 4.31 |
| Transformer fault outage rate (inferior/hundred year) | 7 | 5.62 |
| Switchgear fault outage rate (inferior/hundred year) | 7 | 5.5 |
| 3, operation of power networks situation | 15 | 12.08 |
| The quality of power supply | 7.5 | 6.83 |
| The reactive-load compensation degree | 3.5 | 3.05 |
| Loss (%) | 4 | 2.2 |
| Two, power supply capacity | 50 | 29.97 |
| 1, load capacity | 30 | 17.27 |
| Hold and carry ratio | 15 | 5.48 |
| Circuit heavy duty ratio (%) | 5 | 3.84 |
| Transformer heavy duty ratio (%) | 10 | 7.95 |
| 2, change energy supply power | 20 | 12.7 |
| Circuit satisfies N-1 ratio (%) | 12.5 | 12.19 |
| Different substation interconnector ratio (%) | 7.5 | 0.51 |
| Total points | 100 | 68.64 |
Assessment result according to table 4 can know that the operation level of power supply network and power supply capacity integrate score are 68.64, and assessment result is " generally ".Can find out that on the scoring situation of each achievement data there are a lot of present situation problems in the said firm's power supply network, as still have aging consumer (to exist the operation time limit to surpass transformer and the switch in 20 years; And a large amount of high loss transformers etc.) put into operation; Equipment failure rate is higher, and load allocating is unbalanced, and reactive-load compensation is not enough; Problems such as loss is bigger than normal are the unfavorable factors of power supply network safety, reliable, economical operation.Therefore, the utilization the present invention of the said firm carries out the operation level and the power supply capacity assessment of power supply network, has finally found out the weak link of power supply network, for company carries out system's regulation, the special administration of power supply network and works out a plan to make a strategic decision foundation is provided.
Method provided by the invention; On the basis of fully investigating large enterprise's power supply present situation; The appraisal procedure of large enterprise's power supply network operation level and power supply capacity is proposed; Can be directed against enterprise's power supply network the whole network or partial electric grid, or the different phase of power supply network planning construction (early stage of planning construction or later stage), evaluation index formulated according to operation level and power supply capacity two aspects; Corresponding each evaluation index is equipped with corresponding scoring formula; Through calculating the present situation situation that reflects large enterprise's power supply network operation level and power supply capacity intuitively, for enterprise carries out the power supply network regulation, the power supply network assessment of economic benefit behind formulation power supply network programmed decision-making and the planning construction provides a cover practicable technical basis.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although the present invention has been carried out detailed explanation with reference to the foregoing description; Under the those of ordinary skill in field be to be understood that: still can specific embodiments of the invention make amendment or be equal to replacement; And do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (12)
1. operation level and power supply capacity appraisal procedure based on large enterprise's power supply network is characterized in that said method comprises the steps:
A, confirm scope of assessment;
B, collection and verification assessment basic data;
C, derivation individual event evaluation index data;
D, the said individual event evaluation index score of calculating;
E, obtain operation level and power supply capacity score;
F, analysis and evaluation result.
2. appraisal procedure as claimed in claim 1 is characterized in that, in the said steps A, and according to enterprise's needs, to large enterprise's power supply network the whole network or local power net, or the different phase of power supply network planning construction, the scope of assessment of the affirmation enterprise's power supply network of assessing.
3. appraisal procedure as claimed in claim 1 is characterized in that, among the said step B, collects the also assessment basic data of the said enterprise of verification power supply network; Said assessment basic data comprises the operation level and the power supply capacity of said enterprise power supply network; Said operation level comprises equipment, equipment operation condition and operation of power networks situation; Said power supply capacity comprises load capacity and changes energy supply power.
4. appraisal procedure as claimed in claim 3 is characterized in that, said equipment comprises:
Operation surpasses 30 years circuit ratios: the operation time limit is no less than the line length sum/total line length in 30 years;
Operation surpasses 20 years transformer ratios: the operation time limit is no less than the transformer platform in 20 years and counts the total platform number of sum/transformer;
Operation surpasses 20 years switch ratios: the operation time limit is no less than the switch-desk in 20 years and counts the total platform number of sum/switch;
High loss transformer ratio: S7 and more the transformer platform of early model count the total platform number of sum/transformer;
Switch does not have the oiling rate: non-oil switch platform is counted the total platform number of sum/switch.
5. appraisal procedure as claimed in claim 3 is characterized in that, said equipment operation condition comprises:
Line outage rate: every 100km line outage number of times in the whole year;
Transformer fault outage rate: per hundred transformer fault frequencies of power cut in the whole year;
Switchgear fault outage rate: the fault outage number of times of per hundred switchgears in the whole year.
6. appraisal procedure as claimed in claim 3 is characterized in that, said operation of power networks situation comprises:
The quality of power supply: comprise the qualified ratio of harmonic voltage and electric current, the qualified ratio of voltage deviation, the qualified ratio of imbalance of three-phase voltage degree and voltage fluctuation and the qualified ratio of flickering;
The qualified ratio of harmonic voltage and electric current: harmonic voltage and the current value measurement point number/overall measurement point number in the specialized range that is up to state standards;
The qualified ratio of voltage deviation: the voltage deviation value measurement point number/overall measurement point number in the specialized range that is up to state standards;
The qualified ratio of imbalance of three-phase voltage degree: the imbalance of three-phase voltage degree measurement point number/overall measurement point number in the specialized range that is up to state standards;
The qualified ratio of voltage fluctuation and flickering: voltage fluctuation and the flickering value measurement point number/overall measurement point number in the national Specification scope;
Reactive-load compensation degree: refer to power factor;
Loss: (power supply enterprise is sold to the electric weight-enterprise statistics power consumption of enterprise)/power supply enterprise is sold to the electric weight of enterprise; Said enterprise statistics power consumption refers to that enterprise is voluntarily to power unit statistics power consumption.
7. appraisal procedure as claimed in claim 3 is characterized in that, said load capacity comprises:
Hold and carry ratio: the total load (kW) of the converting equipment total volume (kVA) of same electric pressure power supply network/correspondence in the assessment area;
Circuit heavy duty ratio: the heavy-loaded line travel permit is counted sum/circuit total number; Said heavy-haul line refers to that circuit year maximum load rate meets or exceeds 70% and continue more than 1 hour;
Transformer heavy duty ratio: the overload transformer platform is counted the total platform number of sum/transformer; Said overload transformer refers to that transformer year maximum load rate meets or exceeds 80% and continue more than 2 hours.
8. appraisal procedure as claimed in claim 3 is characterized in that, said commentaries on classics energy supply power comprises:
Circuit satisfies the N-1 ratio: the number of lines sum/circuit total number that satisfies the N-1 principle;
Different substation interconnector ratio: the number of lines sum/circuit total number of contact is arranged with different substation.
9. appraisal procedure as claimed in claim 1 is characterized in that, among the said step C, utilization scoring expression formula derives each individual event evaluation index data;
Said each individual event evaluation index data surpass 30 years circuit ratios for operation; Operation surpasses 20 years transformer ratios; Operation surpasses 20 years switch ratios; High loss transformer ratio; Switch does not have the oiling rate; The line outage rate; The transformer fault outage rate; Switchgear fault outage rate; The quality of power supply; The qualified ratio of harmonic voltage and electric current; The qualified ratio of voltage deviation; The qualified ratio of imbalance of three-phase voltage degree; The qualified ratio of voltage fluctuation and flickering; The reactive-load compensation degree; Loss; Hold and carry ratio; In circuit heavy duty ratio and the heavily loaded ratio of transformer any one.
10. appraisal procedure as claimed in claim 1 is characterized in that, the said individual event evaluation index of the calculating of said step D score comprises the steps:
The numerical value of a, acquisition individual event evaluation index;
B, calculate the score of each individual event evaluation index.
11. appraisal procedure as claimed in claim 1 is characterized in that, in the said step e, to the weighted sum of said individual event evaluation index data score, obtains the operation level and the power supply capacity integrate score of enterprise's power supply network.
12. appraisal procedure as claimed in claim 1; It is characterized in that; In the said step F; Analyze the assessment result of operation level and power supply capacity, said assessment result is divided into three grades of " height ", " higher " and " generally ", the assessment result rank is analyzed and improved for the part of " generally ".
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065228A (en) * | 2013-01-21 | 2013-04-24 | 广东电网公司东莞供电局 | Power-cut monitoring evaluating and warning method and equipment |
| CN103543360A (en) * | 2013-10-29 | 2014-01-29 | 珠海许继芝电网自动化有限公司 | Method and system for monitoring repeated overload of power distribution network lines |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10008185B4 (en) * | 2000-02-18 | 2004-07-29 | Elbas Elektrische Bahnsysteme Ingenieurgesellschaft Mbh | Short-circuit protection when using energy sources with current control characteristics |
| CN102063657A (en) * | 2010-12-23 | 2011-05-18 | 中国电力科学研究院 | Operating level and power supplying capability evaluation method for urban electric distribution network |
| JP2012016111A (en) * | 2010-06-30 | 2012-01-19 | Toshiba Corp | Power system monitoring control system |
-
2012
- 2012-06-06 CN CN2012101853695A patent/CN102750586A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10008185B4 (en) * | 2000-02-18 | 2004-07-29 | Elbas Elektrische Bahnsysteme Ingenieurgesellschaft Mbh | Short-circuit protection when using energy sources with current control characteristics |
| JP2012016111A (en) * | 2010-06-30 | 2012-01-19 | Toshiba Corp | Power system monitoring control system |
| CN102063657A (en) * | 2010-12-23 | 2011-05-18 | 中国电力科学研究院 | Operating level and power supplying capability evaluation method for urban electric distribution network |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065228B (en) * | 2013-01-21 | 2016-09-14 | 广东电网公司东莞供电局 | Have a power failure monitoring assessment method for early warning and equipment |
| CN103065228A (en) * | 2013-01-21 | 2013-04-24 | 广东电网公司东莞供电局 | Power-cut monitoring evaluating and warning method and equipment |
| CN103543360A (en) * | 2013-10-29 | 2014-01-29 | 珠海许继芝电网自动化有限公司 | Method and system for monitoring repeated overload of power distribution network lines |
| CN105096207A (en) * | 2014-05-06 | 2015-11-25 | 国家电网公司 | Important power user power supply reliability estimation method based on analytic hierarchy process |
| CN104361453A (en) * | 2014-11-18 | 2015-02-18 | 国家电网公司 | Decision-making method of intelligentization building projects of intelligent power distribution network |
| CN104484765A (en) * | 2014-12-25 | 2015-04-01 | 国家电网公司 | Method for evaluating whether urban power supply network reaches world first-class level or not |
| CN105067917A (en) * | 2015-07-29 | 2015-11-18 | 中国电力科学研究院 | Flow branch data rationality validation method |
| CN107909477B (en) * | 2017-11-21 | 2020-11-27 | 国家电网公司 | Power transmission network planning project investment combination optimization method |
| CN107909477A (en) * | 2017-11-21 | 2018-04-13 | 国家电网公司 | A kind of Transmission Expansion Planning in Electric portfolio optimization optimization method |
| CN108631304A (en) * | 2018-05-17 | 2018-10-09 | 福建奥通迈胜电力科技有限公司 | Distribution transformer low-pressure side voltage three-phase imbalance appraisal procedure based on aggregative weighted |
| CN110188994A (en) * | 2019-04-29 | 2019-08-30 | 贵州乌江水电开发有限责任公司 | Running priority grade assessment method in a kind of Hydropower Unit factory |
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