CN109583702A - A kind of Substation Economic Operation analysis and assessment method - Google Patents

A kind of Substation Economic Operation analysis and assessment method Download PDF

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Publication number
CN109583702A
CN109583702A CN201811299961.1A CN201811299961A CN109583702A CN 109583702 A CN109583702 A CN 109583702A CN 201811299961 A CN201811299961 A CN 201811299961A CN 109583702 A CN109583702 A CN 109583702A
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China
Prior art keywords
substation
calculate
index
following formula
main transformer
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CN201811299961.1A
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Chinese (zh)
Inventor
曾伟
孙旻
陈波
何伟
熊俊杰
黄扬琪
何昊
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jiangxi Electric Power Co Ltd
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jiangxi Electric Power Co Ltd
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Priority to CN201811299961.1A priority Critical patent/CN109583702A/en
Publication of CN109583702A publication Critical patent/CN109583702A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
    • G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

A kind of Substation Economic Operation analysis and assessment method, the method calculates each Substation Economic Operation evaluation index first, then evaluation index is normalized, then evaluation index incidence coefficient is calculated, the weighted average for finally calculating each substation's evaluation index carries out economic operation level sequence to substation to be assessed according to the weighted average.The present invention carries out quantizating index analysis for Substation Economic Operation level, achieves good effect in practical applications.

Description

A kind of Substation Economic Operation analysis and assessment method
Technical field
The present invention relates to a kind of Substation Economic Operation analysis and assessment methods, belong to power equipment economical operation technical field.
Background technique
Tie of the substation as power transmission, plays considerable effect.China has more and more in recent years Substation puts into operation, and the assessment of the energy consumption of substation shows more and more important with power saving.It is set including main transformer etc. It is standby to directly affect electrical network economy benefit in interior substation operation economy, for the imbalance between supply and demand for solving electric power resource, it is necessary to adopt Effective technology means are taken effectively to assess Substation Economic Operation level.
However although Study on energy saving is increasingly deepened both at home and abroad, many indexs are not energetic, still lack complete Effective Substation Economic Operation evaluation system is difficult to give converting station electric power equipment and its operation management method more complete It accurately assesses in face.
The present invention carries out quantizating index analysis for the efficiency level of substation, especially main transformer equipment, proposes one Kind Substation Economic Operation analysis and assessment method, achieves good effect in practical applications.
Summary of the invention
The object of the present invention is to overcome drawbacks described above of the existing technology, a kind of Substation Economic Operation assessment is proposed Analysis method improves the practicability and operability of method.
Realizing the technical solution of the object of the invention is, a kind of Substation Economic Operation analysis and assessment method of the present invention is counted first Each Substation Economic Operation evaluation index is calculated, then evaluation index is normalized, evaluation index is then calculated and closes Contact number, finally calculate the weighted average of each substation's evaluation index, according to the weighted average to substation to be assessed into The sequence of row economic operation level.It the described method comprises the following steps:
(1) assume that substation's number to be assessed is m, calculate i-th of (1≤i≤m) Substation Economic Operation evaluation index, Including reactor energy consumption, capacitor energy consumption, load coefficient, main transformer operating factor, power factor (PF), three-phase imbalance coefficient.
Reactor energy consumption ki1It indicates, is calculate by the following formula to obtain:
ki1=Δ P0T
Wherein, Δ P0For the power loss under reactor voltage rating, T is reactor runing time.
Capacitor energy consumption ki2It indicates, is calculate by the following formula to obtain:
ki2=0.003QcT
Wherein, QcFor condenser capacity, T is capacitor runing time.
Load coefficient ki3It indicates, is calculate by the following formula to obtain:
Wherein, Ief, IavMain transformer rms current and average current respectively in running time T.
Main transformer operating factor ki4It indicates, is calculate by the following formula to obtain:
Wherein, β is the Rate of average load of main transformer, βJFor the load factor of main transformer economical operating point.
Power factor (PF) ki5It indicates, is calculate by the following formula to obtain:
Wherein, NWFor the sum of the number of windings of all main transformers of substation,For the power factor (PF) of the side main transformer j, PLjFor main transformer The burden with power of the side j, PtoFor the summation of each side burden with power of all main transformers of substation.
Three-phase imbalance coefficient ki6It indicates, is calculate by the following formula to obtain:
Wherein, SmaxFor the maximum load in three-phase, SminFor the minimum load in three-phase, SavFor three-phase average load.
(2) building Raw performance matrix R is indicated to participate in m substation of assessment and its is referred to target value, is expressed as follows:
(3) evaluation index is subjected to unified dimensionless processing, obtains new evaluation index matrix R*, R*Middle elementUsing such as Lower formula calculates:
Wherein,1≤i≤m, 1≤j≤6.In matrix R*In increase newly element value it is equal For 1 data line, new matrix S is obtained, is indicated are as follows:
(4) S is usedi=(si1,si2,…,si6) the i-th row data in representing matrix S, wherein i=0,1 ..., m are successively counted Calculate incidence coefficient βi(j):
Wherein, i=0,1 ..., m, j=1,2 ..., 6, ρ be the resolution ratio of index, is calculated using following formula:
For index matrix R*In i-th of substation, j-th of index standardized value；ωjFor the weight of j-th of index.
(5) it is directed to each substation to be assessed, calculates the weighted average v of each index incidence coefficienti, 1≤i≤m, use Following formula is calculated:
The invention has the advantages that giving the evaluations matrix of Substation Economic Operation in quantitative mode, propose Evaluation index calculation method, the present invention provide a kind of new method and thinking for power equipment economic operation analysis.
Specific embodiment
The specific embodiment of the invention includes following calculating step:
(1) assume that substation's number to be assessed is m, calculate i-th of (1≤i≤m) Substation Economic Operation evaluation index, Including reactor energy consumption, capacitor energy consumption, load coefficient, main transformer operating factor, power factor (PF), three-phase imbalance coefficient.
Reactor energy consumption ki1It indicates, is calculate by the following formula to obtain:
ki1=Δ P0T
Wherein, Δ P0For the power loss under reactor voltage rating, T is reactor runing time.
Capacitor energy consumption ki2It indicates, is calculate by the following formula to obtain:
ki2=0.003QcT
Wherein, QcFor condenser capacity, T is capacitor runing time.
Load coefficient ki3It indicates, is calculate by the following formula to obtain:
Wherein, Ief, IavMain transformer rms current and average current respectively in running time T.
Main transformer operating factor ki4It indicates, is calculate by the following formula to obtain:
Wherein, β is the Rate of average load of main transformer, βJFor the load factor of main transformer economical operating point.
Power factor (PF) ki5It indicates, is calculate by the following formula to obtain:
Wherein, NWFor the sum of the number of windings of all main transformers of substation,For the power factor (PF) of the side main transformer j, PLjFor main transformer The burden with power of the side j, PtoFor the summation of each side burden with power of all main transformers of substation.
Three-phase imbalance coefficient ki6It indicates, is calculate by the following formula to obtain:
Wherein, SmaxFor the maximum load in three-phase, SminFor the minimum load in three-phase, SavFor three-phase average load.
(2) building Raw performance matrix R is indicated to participate in m substation of assessment and its is referred to target value, is expressed as follows:
(3) evaluation index is subjected to unified dimensionless processing, obtains new evaluation index matrix R*, R*Middle elementUsing such as Lower formula calculates:
Wherein,1≤i≤m, 1≤j≤6.In matrix R*In increase newly element value it is equal For 1 data line, new matrix S is obtained, is indicated are as follows:
(4) S is usedi=(si1,si2,…,si6) the i-th row data in representing matrix S, wherein i=0,1 ..., m are successively counted Calculate incidence coefficient βi(j):
Wherein, i=0,1 ..., m, j=1,2 ..., 6, ρ be the resolution ratio of index, is calculated using following formula:
For index matrix R*In i-th of substation, j-th of index standardized value；ωjFor the weight of j-th of index.
(5) it is directed to each substation to be assessed, calculates the weighted average v of each index incidence coefficienti, 1≤i≤m, use Following formula is calculated:
According to viSize, the economical operation superiority and inferiority degree of each substation is judged, viValue is bigger, then the substation It is higher in the efficiency level of all substations to be assessed.

Claims (1)

1. a kind of Substation Economic Operation appraisal procedure, which is characterized in that the method calculates each Substation Economic Operation and comments Estimate index, then evaluation index is normalized, then calculates evaluation index incidence coefficient, finally calculate each substation and comment The weighted average for estimating index carries out economic operation level sequence to substation to be assessed according to the weighted average；The side Method the following steps are included:
(1) assume that substation's number to be assessed is m, calculate i-th of (1≤i≤m) Substation Economic Operation evaluation index, including Reactor energy consumption, capacitor energy consumption, load coefficient, main transformer operating factor, power factor (PF) and three-phase imbalance coefficient；
Reactor energy consumption ki1It indicates, is calculate by the following formula to obtain:
ki1=Δ P0T
Wherein, Δ P0For the power loss under reactor voltage rating, T is reactor runing time；
Capacitor energy consumption ki2It indicates, is calculate by the following formula to obtain:
ki2=0.003QcT
Wherein, QcFor condenser capacity, T is capacitor runing time；
Load coefficient ki3It indicates, is calculate by the following formula to obtain:
Wherein, Ief, IavMain transformer rms current and average current respectively in running time T；
Main transformer operating factor ki4It indicates, is calculate by the following formula to obtain:
Wherein, β is the Rate of average load of main transformer, βJFor the load factor of main transformer economical operating point；
Power factor (PF) ki5It indicates, is calculate by the following formula to obtain:
Wherein, NWFor the sum of the number of windings of all main transformers of substation,For the power factor (PF) of the side main transformer j, PLjFor the side main transformer j Burden with power, PtoFor the summation of each side burden with power of all main transformers of substation；
Three-phase imbalance coefficient ki6It indicates, is calculate by the following formula to obtain:
Wherein, SmaxFor the maximum load in three-phase, SminFor the minimum load in three-phase, SavFor three-phase average load；
(2) building Raw performance matrix R is indicated to participate in m substation of assessment and its is referred to target value, is expressed as follows:
(3) evaluation index is subjected to unified dimensionless processing, obtains new evaluation index matrix R*, R*Middle elementUsing following public affairs Formula calculates:
Wherein,1≤i≤m, 1≤j≤6；In matrix R*In increase newly element value be 1 Data line, obtain new matrix S, indicate are as follows:
(4) S is usedi=(si1,si2,…,si6) the i-th row data in representing matrix S, wherein i=0,1 ..., m, successively calculate association Factor betai(j):
Wherein, i=0,1 ..., m, j=1,2 ..., 6, ρ be the resolution ratio of index, is calculated using following formula:
For index matrix R*In i-th of substation, j-th of index standardized value；ωjFor the weight of j-th of index；
(5) it is directed to each substation to be assessed, calculates the weighted average v of each index incidence coefficienti, 1≤i≤m, using following formula It is calculated:
According to viSize, the economical operation superiority and inferiority degree of each substation is judged, viValue is bigger, then the substation is in institute There is the efficiency level of substation to be assessed higher.
CN201811299961.1A 2018-11-02 2018-11-02 A kind of Substation Economic Operation analysis and assessment method Pending CN109583702A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104268389A (en) * 2014-09-19 2015-01-07 国家电网公司 Variation coefficient gray correlation degree based short circuit current suppression scheme evaluation method
CN105225033A (en) * 2015-09-08 2016-01-06 国家电网公司 A kind of substation energy efficiency evaluating method based on analytical hierarchy process
CN105372486A (en) * 2015-10-29 2016-03-02 南瑞（武汉）电气设备与工程能效测评中心 Intelligent transformer station energy efficiency detection method based on WSN
CN106709625A (en) * 2016-11-20 2017-05-24 国网江西省电力公司电力科学研究院 Electricity market demand response planning evaluation method
CN107239874A (en) * 2017-04-26 2017-10-10 广西电网有限责任公司电力科学研究院 A kind of quality of power supply and energy-saving analysis system towards track traffic

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104268389A (en) * 2014-09-19 2015-01-07 国家电网公司 Variation coefficient gray correlation degree based short circuit current suppression scheme evaluation method
CN105225033A (en) * 2015-09-08 2016-01-06 国家电网公司 A kind of substation energy efficiency evaluating method based on analytical hierarchy process
CN105372486A (en) * 2015-10-29 2016-03-02 南瑞（武汉）电气设备与工程能效测评中心 Intelligent transformer station energy efficiency detection method based on WSN
CN106709625A (en) * 2016-11-20 2017-05-24 国网江西省电力公司电力科学研究院 Electricity market demand response planning evaluation method
CN107239874A (en) * 2017-04-26 2017-10-10 广西电网有限责任公司电力科学研究院 A kind of quality of power supply and energy-saving analysis system towards track traffic

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