CN106779436A - A kind of Electric Power Network Planning stage construction harmony comprehensive estimation method - Google Patents
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Abstract
The invention discloses a kind of Electric Power Network Planning stage construction harmony comprehensive estimation method, methods described includes（1）Set up Electric Power Network Planning stage construction harmony comprehensive assessment index system；（2）Set up Electric Power Network Planning stage construction harmony Integrated Evaluation Model.Evaluation index system proposed by the present invention covers power network scale, level of security, investment and benefit, and the index system of each voltage class of horizontal many aspects is coordinated in environmental impact assessment, can comprehensively evaluate Electric Power Network Planning and coordinate implementations.Based on evaluation index system, a kind of Electric Power Network Planning stage construction harmony Integrated Evaluation Model based on rough set theory is proposed.
Description
Technical field
The present invention relates to the assessment of Electric Power Network Planning, Electric Power Network Planning stage construction harmony comprehensive assessment is more particularly to.
Background technology
Electric Power Network Planning is the important component of power planning, and the harmony level of Electric Power Network Plannings at different levels will be directly influenced
The security and economy of Operation of Electric Systems.With the development of national economy, China enters high voltage, bulk power grid, large-sized unit
Stage, power network scale and load constantly increase, and electric network composition becomes more complicated, and the coordination sex chromosome mosaicism of Electric Power Network Plannings at different levels is more
Plus it is prominent.Therefore, overall scientific ground assessment power network inner. layers face and the harmony between power network and external factor, sends out in time
The weak link and restraining factors of existing power network development, for the safe and stable operation for ensureing whole power system, accurate instruction electricity
Network planning draws, builds and runs significant.
Electric Power Network Planning is the important step of power grid construction and development, and the planning of science is for instructing power grid construction and developing
To fundamental role.Research at present both at home and abroad to Electric Power Network Planning assessment is more, but few harmony for Electric Power Network Planning
Be estimated or correlation scale-model investigation.Assessment to Electric Power Network Planning in the past, be concentrated mainly on to electric network reliability, security,
The assessment of the single index such as power supply capacity and power supply quality, some research and utilization Fuzzy Synthetic Evaluations give objective, complete
Face, comprehensive quality of power supply assessment indicator system, also have research to consider the not true of initial data when electric network reliability is assessed
It is qualitative, Evaluated effect is improved to a certain extent, these appraisal procedures assess the development level of power network from different aspect, but lack
Weary whole evaluation, the guidance of construction actual to power network is not comprehensive enough, accurate.In recent years, to the synthesis after whole Electric Power Network Planning
Appraisal procedure there has also been certain discussion research, it is proposed that Electric Power Network Planning decision-making of comprehensive evaluation method, the quantization of application system is comprehensive
Evaluation theory is closed, more comprehensive power distribution network synthesis appraisement system is established, but is primarily focused on present situation power network is estimated,
Lack the harmony assessment to power network after planning, still can not effectively solve the practical problem of power network immediate plan and construction project.
Therefore, in the urgent need to the Electric Power Network Planning stage construction harmony comprehensive estimation method for studying science, setting up comprehensive, system, science
Evaluation index system, considers the harmony between power network inner. layers face and power network and external factor, objective evaluation electricity
Network planning draws multifaceted coordination level, Electric Power Network Planning and operation is instructed, for Electric Power Network Planning provides guidance instruction.
The content of the invention
The present invention seeks to：A kind of Electric Power Network Planning stage construction harmony comprehensive estimation method is provided, the method refers in assessment
On the basis of mark system, using rough set theory method agriculture products weight, power network planning scheme is obtained with reference to index scoring
Harmony score value.It is an advantage of the invention that：Can it is objective, comprehensively evaluate the multifaceted harmony of Electric Power Network Planning, it is indicated that power network
The weak link of planning, instructs Electric Power Network Planning, operation, and Electric Power Network Planning work provides the quantitative analysis foundation of science for after.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of Electric Power Network Planning stage construction harmony comprehensive estimation method, the appraisal procedure is comprised the steps of：
A, determine power network planning scheme to be assessed, Electric Power Network Planning of the program containing K；
B, determine evaluation index；
B1, power network scale are included：Power supply installed capacity, Analyzing Total Electricity Consumption, whole society's peak load, system call electricity,
System adjusts peak load, network for the load, power transformation capacity, main transformer number of units, distribution transforming number of units, transformer station number, line length, circuit bar
Number,
B2, level of security are included：Main transformer N-1 percent of pass, circuit N-1 percent of pass, short circuit current level, power supply reliability,
Integrated voltage qualification rate, circuit contact rate,
B3, investment and benefit are included：Comprehensive line loss per unit, main transformer year maximum load rate, high pressure circuit year maximum load rate,
Height is damaged and increases delivery, specific investment cost increasing for load, line loss electricity income, power grid asset income ratio with control with changed scale, specific investment cost,
B4, environmental impact assessment are included：Regenerative resource accounting, reduction of greenhouse gas discharge amount, the occupation of land of newly-built transformer station, newly-built circuit are walked
Corridor takes up an area,
B5, coordination level are included：Change machine ratio, capacity-load ratio, stand between load balancing degrees, outlet load balancing degrees, power transformation capacity
Than, line length ratio；
C, set up assessment models
Based on rough set theory, Electric Power Network Planning stage construction harmony Integrated Evaluation Model is set up, comprised the following steps that：
The determination of c1, attribute
C11, using 36 evaluation indexes as conditional attribute, obtain conditional attribute set C={ c1,c2,…,c36,
Wherein profit evaluation model index is：Power supply installed capacity, Analyzing Total Electricity Consumption, whole society's peak load, system call electricity,
System adjusts peak load, network for the load, power transformation capacity, main transformer number of units, distribution transforming number of units, transformer station number, line length, circuit bar
Number, main transformer N-1 percent of pass, circuit N-1 percent of pass, power supply reliability, integrated voltage qualification rate, circuit contact rate, specific investment cost
Increase delivery, specific investment cost to increase for load, line loss electricity income, power grid asset income ratio, regenerative resource accounting, greenhouse gases
CER,
Cost type index is：Comprehensive line loss per unit, high damage are taken up an area with control with changed scale, the occupation of land of newly-built transformer station, newly-built line corridor,
Moderate type index is：Short circuit current level, main transformer year maximum load rate, high pressure circuit year maximum load rate, change
Machine ratio, capacity-load ratio, stand between load balancing degrees, outlet load balancing degrees, power transformation capacity ratio, line length ratio；
C12, the index scoring y by power network planning scheme jth yearjAs the decision attribute of jth year, decision kind set is obtained
Close D={ yj, j=1,2 ..., K,
When conditional attribute is cost type index, the scoring of its jth year is：
Wherein ci maxIt is conditional attribute cijMaximum, ci minIt is conditional attribute cijMinimum value；
When conditional attribute is profit evaluation model index, the scoring of its jth year is：
Wherein ci maxIt is conditional attribute cijMaximum, ci minIt is conditional attribute cijMinimum value；
When conditional attribute is moderate type index, the scoring of its jth year is：
Wherein ci maxIt is conditional attribute cijMaximum, ci minIt is conditional attribute cijMinimum value,It is conditional attribute cij
Ideal value；
C13, using the programme time as decision table row, conditional attribute and decision attribute are obtained as the row of decision table
To uj={ c1j,c2j,…,cnj,yj, and then obtain domain U={ u1,u2,…,um, domain U is the multiple criteria system
Decision table；
The determination of c2, attribute weight
To seek the importance degree of conditional attribute, the conditional attribute, then the change journey for comparing knowledge system assortment are first removed
Degree, if knowledge system assortment is changed greatly, illustrates that the importance degree of the conditional attribute is high；Conversely, then illustrating that the condition belongs to
The importance degree of property is low；According to rough set theory algorithm, comprise the following steps that：
(1) equivalence class set is determined：U/ind (C), U/ind (D), U/ind (C- { ci})；
(2) the positive domain P of conditional attribute set is obtainedC(D) and the positive domain of conditional attribute set after i-th conditional attribute is removed
(3) the radix Card (P in the positive domain of conditional attribute set are obtainedC(D)) and remove the condition after i-th conditional attribute category
The radix in the property positive domain of set
(4) dependency degree γs of the decision kind set D to conditional attribute collection C is obtainedC(D)；
(5) decision kind set D is obtained to removing the conditional attribute set C- { c after i-th conditional attributeiDependency degree
(6) conditional attribute c is obtainedijImportance degree Z (c in conditional attribute collection Ci,C,D)；
(7) weights treatment is carried out to importance degree, obtains i-th weight beta of conditional attributei：
C3, Electric Power Network Planning stage construction harmony comprehensive assessment score value
Jth year Electric Power Network Planning stage construction harmony comprehensive assessment score value GjIt is calculated as follows：
D, assessment result analysis
Stage construction harmony comprehensive assessment is carried out to power network planning scheme each year, jth year Electric Power Network Planning stage construction is obtained
Harmony comprehensive assessment score value Gj, its value between 0-1, as 0≤GjInaccurate coordination is represented when 0.6, as 0.6≤GjWhen 0.8
Represent that harmony is good, as 0.8≤GjRepresent that harmony is excellent when 1, if the power network planning scheme harmony score value of jth year is relative
The power network planning scheme harmony score value of last year is high, represents this year harmony of power network planning scheme than last year power network planning scheme
Harmony is more preferable；If the power network planning scheme harmony score value of jth year is low with respect to the power network planning scheme harmony score value of last year,
Represent that this year harmony of power network planning scheme declines than last year power network planning scheme harmony.
Compared with prior art, present invention synthesis power network scale, level of security, investment and benefit, environmental impact assessment and coordination water
Five aspects are equalled, comprehensively and systematically reflects the harmony of power network planning scheme.And in the Electric Power Network Planning stage construction harmony synthesis
On the basis of evaluation index system, the Electric Power Network Planning stage construction harmony Integrated Evaluation Model based on rough set theory is proposed, it is right
The harmony of power network planning scheme carries out evaluation analysis, draws evaluation result, thereby indicates that the weak link of Electric Power Network Planning,
Electric Power Network Planning, operation are instructed, the quantitative analysis foundation of science is provided for Electric Power Network Planning work.
Specific embodiment
The present invention is further illustrated below.
Embodiment one
1st, a kind of Electric Power Network Planning stage construction harmony comprehensive estimation method, it is characterised in that the appraisal procedure is comprising following
Step：
A, determine power network planning scheme to be assessed, the program has made the Electric Power Network Planning of K；
B, determine evaluation index；
B1, power network scale are included：Power supply installed capacity, Analyzing Total Electricity Consumption, whole society's peak load, system call electricity,
System adjusts peak load, network for the load, power transformation capacity, main transformer number of units, distribution transforming number of units, transformer station number, line length, circuit bar
Number,
B2, level of security are included：Main transformer N-1 percent of pass, circuit N-1 percent of pass, short circuit current level, power supply reliability,
Integrated voltage qualification rate, circuit contact rate,
B3, investment and benefit are included：Comprehensive line loss per unit, main transformer year maximum load rate, high pressure circuit year maximum load rate,
Height is damaged and increases delivery, specific investment cost increasing for load, line loss electricity income, power grid asset income ratio with control with changed scale, specific investment cost,
B4, environmental impact assessment are included：Regenerative resource accounting, reduction of greenhouse gas discharge amount, the occupation of land of newly-built transformer station, newly-built circuit are walked
Corridor takes up an area,
B5, coordination level are included：Change machine ratio, capacity-load ratio, stand between load balancing degrees, outlet load balancing degrees, power transformation capacity
Than, line length ratio；
C, set up assessment models
Based on rough set theory, Electric Power Network Planning stage construction harmony Integrated Evaluation Model is set up, comprised the following steps that：
The determination of c1, attribute
C11, using 36 evaluation indexes as conditional attribute, obtain conditional attribute set C={ c1,c2,…,c36,
Wherein profit evaluation model index is：Power supply installed capacity, Analyzing Total Electricity Consumption, whole society's peak load, system call electricity,
System adjusts peak load, network for the load, power transformation capacity, main transformer number of units, distribution transforming number of units, transformer station number, line length, circuit bar
Number, main transformer N-1 percent of pass, circuit N-1 percent of pass, power supply reliability, integrated voltage qualification rate, circuit contact rate, specific investment cost
Increase delivery, specific investment cost to increase for load, line loss electricity income, power grid asset income ratio, regenerative resource accounting, greenhouse gases
CER,
Cost type index is：Comprehensive line loss per unit, high damage are taken up an area with control with changed scale, the occupation of land of newly-built transformer station, newly-built line corridor,
Moderate type index is：Short circuit current level, main transformer year maximum load rate, high pressure circuit year maximum load rate, change
Machine ratio, capacity-load ratio, stand between load balancing degrees, outlet load balancing degrees, power transformation capacity ratio, line length ratio；
C12, the index scoring y by power network planning scheme jth yearjAs the decision attribute of jth year, decision kind set is obtained
Close D={ yj, j=1,2 ..., K,
When conditional attribute is cost type index, the scoring of its jth year is：
Wherein ci maxIt is conditional attribute cijMaximum, ci minIt is conditional attribute cijMinimum value；
When conditional attribute is profit evaluation model index, the scoring of its jth year is：
Wherein ci maxIt is conditional attribute cijMaximum, ci minIt is conditional attribute cijMinimum value；
When conditional attribute is moderate type index, the scoring of its jth year is：
Wherein ci maxIt is conditional attribute cijMaximum, ci minIt is conditional attribute cijMinimum value,It is conditional attribute cij
Ideal value；
C13, using the programme time as decision table row, conditional attribute and decision attribute are obtained as the row of decision table
To uj={ c1j,c2j,…,cnj,yj, and then obtain domain U={ u1,u2,…,um, domain U is the multiple criteria system
Decision table；
The determination of c2, attribute weight
To seek the importance degree of conditional attribute, the conditional attribute, then the change journey for comparing knowledge system assortment are first removed
Degree, if knowledge system assortment is changed greatly, illustrates that the importance degree of the conditional attribute is high；Conversely, then illustrating that the condition belongs to
The importance degree of property is low；According to rough set theory algorithm, comprise the following steps that：
(1) equivalence class set is determined：U/ind (C), U/ind (D), U/ind (C- { ci})；
(2) the positive domain P of conditional attribute set is obtainedC(D) and the positive domain of conditional attribute set after i-th conditional attribute is removed
(3) the radix Card (P in the positive domain of conditional attribute set are obtainedC(D)) and remove the condition after i-th conditional attribute category
The radix in the property positive domain of set
(4) dependency degree γs of the decision kind set D to conditional attribute collection C is obtainedC(D)；
(5) decision kind set D is obtained to removing the conditional attribute set C- { c after i-th conditional attributeiDependency degree
(6) conditional attribute c is obtainedijImportance degree Z (c in conditional attribute collection Ci,C,D)；
(7) weights treatment is carried out to importance degree, obtains i-th weight beta of conditional attributei：
C3, Electric Power Network Planning stage construction harmony comprehensive assessment score value
Jth year Electric Power Network Planning stage construction harmony comprehensive assessment score value GjIt is calculated as follows：
D, assessment result analysis
Stage construction harmony comprehensive assessment is carried out to power network planning scheme each year, jth year Electric Power Network Planning stage construction is obtained
Harmony comprehensive assessment score value Gj, its value between 0-1, as 0≤GjInaccurate coordination is represented when 0.6, as 0.6≤GjWhen 0.8
Represent that harmony is good, as 0.8≤GjRepresent that harmony is excellent when 1, if the power network planning scheme harmony score value of jth year is relative
The power network planning scheme harmony score value of last year is high, represents this year harmony of power network planning scheme than last year power network planning scheme
Harmony is more preferable；If the power network planning scheme harmony score value of jth year is low with respect to the power network planning scheme harmony score value of last year,
Represent that this year harmony of power network planning scheme declines than last year power network planning scheme harmony.
Claims (1)
1. a kind of Electric Power Network Planning stage construction harmony comprehensive estimation method, it is characterised in that the appraisal procedure is comprised the steps of：
A, determine power network planning scheme to be assessed, Electric Power Network Planning of the program containing K；
B, determine evaluation index；
B1, power network scale are included：Power supply installed capacity, Analyzing Total Electricity Consumption, whole society's peak load, system call electricity, system to adjust
Peak load, network for the load, power transformation capacity, main transformer number of units, distribution transforming number of units, transformer station number, line length, the number of lines,
B2, level of security are included：Main transformer N-1 percent of pass, circuit N-1 percent of pass, short circuit current level, power supply reliability, synthesis
Rate of qualified voltage, circuit contact rate,
B3, investment and benefit are included：Comprehensive line loss per unit, main transformer year maximum load rate, high pressure circuit year maximum load rate, damage high
Increase delivery, specific investment cost with control with changed scale, specific investment cost to increase for load, line loss electricity income, power grid asset income ratio,
B4, environmental impact assessment are included：Regenerative resource accounting, reduction of greenhouse gas discharge amount, the occupation of land of newly-built transformer station, newly-built line corridor are accounted for
Ground,
B5, coordination level are included：Change machine ratio, capacity-load ratio, stand between load balancing degrees, outlet load balancing degrees, power transformation capacity ratio, line
Road length ratio；
C, set up assessment models
Based on rough set theory, Electric Power Network Planning stage construction harmony Integrated Evaluation Model is set up, comprised the following steps that：
The determination of c1, attribute
C11, using 36 evaluation indexes as conditional attribute, obtain conditional attribute set C={ c1,c2,…,c36,
Wherein profit evaluation model index is：Power supply installed capacity, Analyzing Total Electricity Consumption, whole society's peak load, system call electricity, system to adjust
Peak load, network for the load, power transformation capacity, main transformer number of units, distribution transforming number of units, transformer station number, line length, the number of lines, master
Become N-1 percent of pass, circuit N-1 percent of pass, power supply reliability, integrated voltage qualification rate, circuit contact rate, specific investment cost and increase power supply
Amount, specific investment cost increase for load, line loss electricity income, power grid asset income ratio, regenerative resource accounting, reduction of greenhouse gas discharge
Amount,
Cost type index is：Comprehensive line loss per unit, high damage are taken up an area with control with changed scale, the occupation of land of newly-built transformer station, newly-built line corridor,
Moderate type index is：Short circuit current level, main transformer year maximum load rate, high pressure circuit year maximum load rate, become machine ratio,
Capacity-load ratio, stand between load balancing degrees, outlet load balancing degrees, power transformation capacity ratio, line length ratio；
C12, the index scoring y by power network planning scheme jth yearjAs the decision attribute of jth year, decision attribute set D=is obtained
{yj, j=1,2 ..., K,
When conditional attribute is cost type index, the scoring of its jth year is：
Wherein cimaxIt is conditional attribute cijMaximum, ciminIt is conditional attribute cijMinimum value；
When conditional attribute is profit evaluation model index, the scoring of its jth year is：
Wherein cimaxIt is conditional attribute cijMaximum, ciminIt is conditional attribute cijMinimum value；
When conditional attribute is moderate type index, the scoring of its jth year is：
Wherein cimaxIt is conditional attribute cijMaximum, ciminIt is conditional attribute cijMinimum value,It is conditional attribute cijReason
Think value；
C13, using the programme time as decision table row, conditional attribute and decision attribute obtain u as the row of decision tablej=
{c1j,c2j,…,cnj,yj, and then obtain domain U={ u1,u2,…,um, domain U is the decision-making of the multiple criteria system
Table；
The determination of c2, attribute weight
To seek the importance degree of conditional attribute, the conditional attribute is first removed, then compare the change degree of knowledge system assortment, if
Knowledge system assortment is changed greatly, then illustrate that the importance degree of the conditional attribute is high；Conversely, then illustrating the weight of the conditional attribute
Spend low；According to rough set theory algorithm, comprise the following steps that：
(1) equivalence class set is determined：U/ind (C), U/ind (D), U/ind (C- { ci})；
(2) the positive domain P of conditional attribute set is obtainedC(D) and the positive domain of conditional attribute set after i-th conditional attribute is removed
(3) the radix Card (P in the positive domain of conditional attribute set are obtainedC(D)) and the conditional attribute collection after i-th conditional attribute is removed
Close the radix in positive domain
(4) dependency degree γs of the decision kind set D to conditional attribute collection C is obtainedC(D)；
(5) decision kind set D is obtained to removing the conditional attribute set C- { c after i-th conditional attributeiDependency degree
(6) conditional attribute c is obtainedijImportance degree Z (c in conditional attribute collection Ci,C,D)；
(7) weights treatment is carried out to importance degree, obtains i-th weight beta of conditional attributei：
C3, Electric Power Network Planning stage construction harmony comprehensive assessment score value
Jth year Electric Power Network Planning stage construction harmony comprehensive assessment score value GjIt is calculated as follows：
D, assessment result analysis
Stage construction harmony comprehensive assessment is carried out to power network planning scheme each year, jth year Electric Power Network Planning stage construction is obtained and is coordinated
Property comprehensive assessment score value Gj, its value between 0-1, as 0≤GjInaccurate coordination is represented when 0.6, as 0.6≤GjRepresented when 0.8
Harmony is good, as 0.8≤GjRepresent that harmony is excellent when 1, if the power network planning scheme harmony score value of jth year is with respect to last year
Power network planning scheme harmony score value it is high, represent this year harmony of power network planning scheme than last year power network planning scheme coordinate
Property is more preferable；If the power network planning scheme harmony score value of jth year is low with respect to the power network planning scheme harmony score value of last year, represent
This year harmony of power network planning scheme declines than last year power network planning scheme harmony.
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| CN107767044A (en) * | 2017-10-13 | 2018-03-06 | 国网河北能源技术服务有限公司 | A kind of evaluation method for weighing power network line loss |
| CN108876103A (en) * | 2018-05-07 | 2018-11-23 | 国网天津市电力公司 | District power network planning scheme comparison method based on voltage class sequence measures of effectiveness |
| CN111027829A (en) * | 2019-11-27 | 2020-04-17 | 国网江苏省电力有限公司盐城供电分公司 | Benefit-based power grid planning system |
| CN111160693A (en) * | 2019-11-20 | 2020-05-15 | 南方电网能源发展研究院有限责任公司 | Power grid planning coordination evaluation method and system |
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2016
- 2016-12-27 CN CN201611227429.XA patent/CN106779436A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107463712A (en) * | 2017-08-23 | 2017-12-12 | 上海中信信息发展股份有限公司 | File format usability evaluation method and device |
| CN107767044A (en) * | 2017-10-13 | 2018-03-06 | 国网河北能源技术服务有限公司 | A kind of evaluation method for weighing power network line loss |
| CN108876103A (en) * | 2018-05-07 | 2018-11-23 | 国网天津市电力公司 | District power network planning scheme comparison method based on voltage class sequence measures of effectiveness |
| CN111160693A (en) * | 2019-11-20 | 2020-05-15 | 南方电网能源发展研究院有限责任公司 | Power grid planning coordination evaluation method and system |
| CN111160693B (en) * | 2019-11-20 | 2023-05-30 | 南方电网能源发展研究院有限责任公司 | Power grid planning coordination evaluation method and system |
| CN111027829A (en) * | 2019-11-27 | 2020-04-17 | 国网江苏省电力有限公司盐城供电分公司 | Benefit-based power grid planning system |
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Application publication date: 20170531 |