CN104319784A - Regional power grid reactive power compensation optimization scheme comparison analysis method - Google Patents
Regional power grid reactive power compensation optimization scheme comparison analysis method Download PDFInfo
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- CN104319784A CN104319784A CN201410505392.7A CN201410505392A CN104319784A CN 104319784 A CN104319784 A CN 104319784A CN 201410505392 A CN201410505392 A CN 201410505392A CN 104319784 A CN104319784 A CN 104319784A
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- index
- configuration
- power grid
- reactive power
- scheme comparison
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The invention discloses a regional power grid reactive power compensation optimization scheme comparison analysis method. The regional power grid reactive power compensation optimization scheme comparison analysis method includes the following steps of: configuration category index analysis: fuzzification processing is performed on the information of reactive power compensation equipment, and then weighting processing is performed on the information, and as a result, a configuration category index I1 can be obtained; configuration address selection index analysis: fuzzification processing is performed on address selection information, and then, weighting processing is performed on the address selection information, and as a result, a configuration address selection index I2 can be obtained; configuration capacity index analysis: fuzzification processing is performed the capacity information of the reactive power compensation equipment, and then, weighting processing is performed on the capacity information, and as a result, a configuration address selection index I3 can be obtained; and configuration comprehensive index analysis and conclusion drawing: weighting summation is performed on the above configuration category index I1, configuration address selection index I2 and configuration address selection index I3, and as a result, a configuration comprehensive index I can be obtained. With the regional power grid reactive power compensation optimization scheme comparison analysis method adopted, the capability of a power grid to receive and transmit new energy can be greatly enhanced with safe and economic operation of the power grid ensured, and wind curtailment can be decreased, and new energy-to-power grid electricity conversion efficiency can be improved.
Description
Technical field
The present invention relates to reactive power/voltage control technical field in scale generation of electricity by new energy process, particularly, relate to a kind of regional power grid reactive power compensation ability scheme comparison analytical method.
Background technology
The large-scale new forms of energy base majority that China's wind-powered electricity generation produces after entering the large-scale development stage is positioned at " three northern areas of China " (northwest, northeast, North China); large-scale new forms of energy base is generally away from load center, and its electric power needs to be transported to load center to dissolve through long-distance, high voltage.For Gansu Power Grid, by April, 2014, the installed capacity of Gansu Power Grid grid connected wind power has reached 7,070,000 kilowatts, accounts for 20.2% of Gansu Power Grid total installed capacity (3,500 ten thousand kilowatts) capacity, becomes the second largest main force power supply being only second to thermoelectricity; Photovoltaic generation installed capacity has reached 4,350,000 kilowatts, accounts for 12.4% of Gansu Power Grid total installation of generating capacity, and simultaneously Gansu becomes China's photovoltaic and to install largest province.At present, Gansu Power Grid wind-powered electricity generation, photovoltaic generation installation account for 1/3 of Gansu Power Grid total installation of generating capacity.
Due to the intermittence of wind, light resources, randomness and fluctuation, the fluctuation of wind power output can cause large-scale wind electricity field voltage to occur corresponding fluctuation.When wind energy turbine set generation voltage comparatively large disturbances time, if do not have enough dynamic reactive to support, wind energy turbine set Voltage Drop will be caused.At present, the low-voltage tolerance of blower fan itself is very limited, and now Wind turbines is for the protection of self, often takes the mode of excision automatically, causes system to gain merit unbalance, and influential system is stablized; Meanwhile, asynchronous generator, does not possess the ability of maintenance and conditioner terminal voltage level, operationally also will from Systemic absorption reactive power, and therefore voltage stabilization sex chromosome mosaicism is more outstanding.After system voltage falls, if electrical network can not provide enough idle, the Wind turbines set end voltage based on asynchronous generator cannot be rebuild, and causes overspeed protection or the under-voltage protection action excision Wind turbines of all asynchronous Wind turbines in whole wind energy turbine set; If protection cannot regular event, because the set end voltage of Wind turbines cannot be rebuild, then wind energy turbine set even regional power grid transient voltage unstability can be caused.Influence each other owing to exchanging between the voltage of whole electrical network of networked system and frequency, Jiuquan region wind power output significantly change must cause whole system voltage, frequency fluctuation, cause accident to expand further.
Summary of the invention
The object of the invention is to, for the problems referred to above, a kind of regional power grid reactive power compensation ability scheme comparison analytical method is proposed, to realize under the prerequisite ensureing power grid security economical operation, significantly improve electrical network to the receiving of new forms of energy and send ability, reduce and abandon wind, improve the advantage of new forms of energy electricity volume.
For achieving the above object, the technical solution used in the present invention is: a kind of regional power grid reactive power compensation ability scheme comparison analytical method, comprising:
Step 1: analysis configuration kind index, by the information fuzzy process of each reactive-load compensation equipment, then draws configuration categories index I through weighting process
1;
Step 2: analysis configuration addressing index, by the process of addressing information fuzzy, then draws configuration addressing index I through weighting process
2;
Step 3: analysis configuration capacity performance index, by reactive-load compensation equipment capacity information Fuzzy processing, then draws configuration addressing index I through weighting process
3;
Step 4: analysis configuration overall target is also reached a conclusion, by above-mentioned configuration categories index I
1, configuration addressing index I
2with configuration addressing index I
3weighting is got and is obtained configuring overall target I.
Preferably, in above-mentioned steps 1, draw configuration categories index I through weighting process
1be specially,
Wherein, N is the total number of units of compensation equipment, W
*for weight coefficient, i represents i-th equipment, and A represents the response time, and B represents responsiveness, and C represents failure rate, and D represents later maintenance, and E represents floor space, and F represents price.
Preferably, in above-mentioned steps 2, configuration addressing index I
2be specially,
I
2＝(W
GG+W
HH+W
sS
ΛE
n1)，
Wherein, W
*for weight coefficient, G counts out with representing compensation, and H represents and is subordinate to number of regions, and S represents the sensitivity of website reactive voltage, S
Λfor the diagonal element matrix of sensitivity matrix S, E
n1for the unit matrix of capable 1 row of n.
Preferably, in above-mentioned steps 3, configuration addressing index I
3be specially:
I
3＝(W
JJ+W
KK)，
Wherein, W* is weight coefficient, and J represents scope range of the fluctuation of voltage, and K represents compensation equipment capacity.
Preferably, described configuration overall target I is specially:
I＝W
1I
1+W
2I
2+W
3I
3，
Wherein, W* is weight coefficient, represents the significance level of each index in comprehensive severity index, and meets W1+W2+W3=1.
Technical scheme of the present invention has following beneficial effect:
Technical scheme of the present invention, by realizing the configuration of optimized regional power grid reactive capability, realize the reactive power/voltage control that extensive fluctuation new forms of energy concentrate grid-connected situation lower area electrical network, reach under the prerequisite ensureing power grid security economical operation, significantly improve electrical network to the receiving of new forms of energy and send ability, reduce and abandon wind, improve the object of new forms of energy electricity volume.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the flow chart of the regional power grid reactive power compensation ability scheme comparison analytical method described in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
A kind of regional power grid reactive power compensation ability scheme comparison analytical method, specifically comprises following content.
Set up a kind of reactive power compensation ability based on Fuzzy AHP configuration overall target, by challenge is decomposed into some levels and some questions, significance level between two between factor is made comparative judgments, set up judge index, thus draw the weight of different schemes importance degree, for the selection of preferred plan provides foundation.Comparing calculation two schemes distribute overall target rationally, finally choose the reactive power compensation ability allocation plan of applicable regional power grid.
Consider the factor of device category, addressing place, addressing capacity three aspects, after weighting process, form overall target.Specifically as shown in Figure 1,
Step 1, analysis configuration kind index:
By the information fuzzy process of each reactive-load compensation equipment, be divided into 1-4 grades according to good and bad grade, wherein 4 represent state optimization, and all the other successively decrease.Result is as shown in table 1:
Table 1, reactive-load compensation equipment kind Index grading table:
Weighting process draws configuration categories index I
1as follows:
Wherein N is the total number of units of compensation equipment, W
*for weight coefficient, i represents i-th equipment, and A-F corresponding relation is as shown in table 1.
Step 2, analysis configuration addressing index:
Reactive power compensation address choose in line with layering and zoning, the principle of local compensation, should be conducive to engineering construction at as far as possible few place installing compensation equipment.
By the process of addressing information fuzzy, be divided into 1-4 grades according to good and bad grade, wherein 4 represent state optimization, and all the other successively decrease.Result is as shown in table 2:
Table 2, reactive-load compensation equipment addressing Index grading table:
Weighting process draws configuration addressing index I
2as follows:
I
2＝(W
GG+W
HH+W
sS
ΛE
n1) (2)
Wherein W
*for weight coefficient, G-H corresponding relation is as shown in table 2, S
Λfor the diagonal element matrix of sensitivity matrix S, E
n1for the unit matrix of capable 1 row of n.
Step 3, analysis configuration capacity performance index:
Reactive-load compensation equipment capacity abundance is the guarantee of voltage regulation capability, and simultaneously superfluous compensation capacity causes cost of investment too high and the idleness of equipment.Therefore from the viewpoint of voltage regulation capability and place capacity size two, by information fuzzy process, be divided into 1-4 grades according to good and bad grade, wherein 4 represent state optimization, and all the other successively decrease.Result is as shown in table 3:
Table 3, reactive-load compensation equipment capacity performance index hierarchical table:
Weighting process draws configuration addressing index I
3as follows:
I
3＝(W
JJ+W
KK) (3)
Step 4, analysis configuration overall target reaching a conclusion:
Configuration overall target need reflect the characteristic of reactive compensation capacity many aspects, and to the influence degree of Network Voltage Stability and sensitivity factor.Above-mentioned three kinds of index weightings are got and obtains configuring overall target I, as follows:
I＝W
1I
1+W
2I
2+W
3I
3 (4)
W in formula
*for weight coefficient, represent the significance level of each index in comprehensive severity index, and meet W
1+ W
2+ W
3=1.Owing to all taking the process that quantizes in These parameters, and numerical value height expression state is superior.Therefore, the scheme can choosing configuration overall target numerical value large compensates configuration.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a regional power grid reactive power compensation ability scheme comparison analytical method, is characterized in that, comprising:
Step 1: analysis configuration kind index, by the information fuzzy process of each reactive-load compensation equipment, then draws configuration categories index I through weighting process
1;
Step 2: analysis configuration addressing index, by the process of addressing information fuzzy, then draws configuration addressing index I through weighting process
2;
Step 3: analysis configuration capacity performance index, by reactive-load compensation equipment capacity information Fuzzy processing, then draws configuration addressing index I through weighting process
3;
Step 4: analysis configuration overall target is also reached a conclusion, by above-mentioned configuration categories index I
1, configuration addressing index I
2with configuration addressing index I
3weighting is got and is obtained configuring overall target I.
2. regional power grid reactive power compensation ability scheme comparison analytical method according to claim 1, is characterized in that, in above-mentioned steps 1, draw configuration categories index I through weighting process
1be specially,
Wherein, N is the total number of units of compensation equipment, W
*for weight coefficient, i represents i-th equipment, and A represents the response time, and B represents responsiveness, and C represents failure rate, and D represents later maintenance, and E represents floor space, and F represents price.
3. regional power grid reactive power compensation ability scheme comparison analytical method according to claim 2, is characterized in that, in above-mentioned steps 2, and configuration addressing index I
2be specially,
I
2＝(W
GG+W
HH+W
sS
ΛE
n1)，
Wherein, W
*for weight coefficient, G counts out with representing compensation, and H represents and is subordinate to number of regions, and S represents the sensitivity of website reactive voltage, S
Λfor the diagonal element matrix of sensitivity matrix S, E
n1for the unit matrix of capable 1 row of n.
4. regional power grid reactive power compensation ability scheme comparison analytical method according to claim 3, is characterized in that, in above-mentioned steps 3, and configuration addressing index I
3be specially:
I
3＝(W
JJ+W
KK)，
Wherein, W* is weight coefficient, and J represents scope range of the fluctuation of voltage, and K represents compensation equipment capacity.
5. regional power grid reactive power compensation ability scheme comparison analytical method according to claim 4, it is characterized in that, described configuration overall target I is specially:
I＝W
1I
1+W
2I
2+W
3I
3，
Wherein, W* is weight coefficient, represents the significance level of each index in comprehensive severity index, and meets W1+W2+W3=1.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162161A (en) * | 2015-08-25 | 2015-12-16 | 国家电网公司 | Transient tripping control method for out-going wind power base containing different types of draught fans |
| CN108334990A (en) * | 2018-02-12 | 2018-07-27 | 中国电力科学研究院有限公司 | A kind of bulk power grid reactive-load compensation addressing and capacity optimization method and system |
| CN109449947A (en) * | 2018-11-02 | 2019-03-08 | 华南理工大学 | Isolated island micro-capacitance sensor reactive power/voltage control capability assessment method and its optimization method |
| CN109980662A (en) * | 2019-03-18 | 2019-07-05 | 国网浙江省电力有限公司 | Platform area power quality controlling equipment Optimal Distribution point appraisal procedure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055196A (en) * | 2010-12-20 | 2011-05-11 | 南京软核科技有限公司 | 10 kv-distribution network reactive power compensation optimization method in power system |
| CN103107547A (en) * | 2013-01-23 | 2013-05-15 | 华南理工大学 | Reactive compensation differentiation collocation method of 10kV distribution lines |
| CN103248059A (en) * | 2013-05-07 | 2013-08-14 | 广东电网公司电力科学研究院 | Reactive voltage optimization method and system for distribution network |
| CN103701140A (en) * | 2014-01-06 | 2014-04-02 | 国家电网公司 | Dynamic reactive power reserve optimization method for improving transient voltage stability of alternating-current and direct-current power grid |
-
2014
- 2014-09-27 CN CN201410505392.7A patent/CN104319784B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055196A (en) * | 2010-12-20 | 2011-05-11 | 南京软核科技有限公司 | 10 kv-distribution network reactive power compensation optimization method in power system |
| CN103107547A (en) * | 2013-01-23 | 2013-05-15 | 华南理工大学 | Reactive compensation differentiation collocation method of 10kV distribution lines |
| CN103248059A (en) * | 2013-05-07 | 2013-08-14 | 广东电网公司电力科学研究院 | Reactive voltage optimization method and system for distribution network |
| CN103701140A (en) * | 2014-01-06 | 2014-04-02 | 国家电网公司 | Dynamic reactive power reserve optimization method for improving transient voltage stability of alternating-current and direct-current power grid |
Non-Patent Citations (3)
| Title |
|---|
| 丁晓群等: "结合模态分析的遗传算法在配电网无功规划中的应用", 《电网技术》 * |
| 刘传铨等: "电力系统无功补偿点及其补偿容量的确定", 《电网技术》 * |
| 夏可青: "电力市场环境下的无功优化规划的研究", 《中国优秀硕士学位论文全文数据库(电子期刊) 工程科技Ⅱ辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162161A (en) * | 2015-08-25 | 2015-12-16 | 国家电网公司 | Transient tripping control method for out-going wind power base containing different types of draught fans |
| CN108334990A (en) * | 2018-02-12 | 2018-07-27 | 中国电力科学研究院有限公司 | A kind of bulk power grid reactive-load compensation addressing and capacity optimization method and system |
| CN108334990B (en) * | 2018-02-12 | 2021-03-26 | 中国电力科学研究院有限公司 | Reactive power compensation site selection and capacity optimization method and system for large power grid |
| CN109449947A (en) * | 2018-11-02 | 2019-03-08 | 华南理工大学 | Isolated island micro-capacitance sensor reactive power/voltage control capability assessment method and its optimization method |
| CN109449947B (en) * | 2018-11-02 | 2020-12-22 | 华南理工大学 | Island microgrid reactive voltage control capability assessment method and optimization method thereof |
| CN109980662A (en) * | 2019-03-18 | 2019-07-05 | 国网浙江省电力有限公司 | Platform area power quality controlling equipment Optimal Distribution point appraisal procedure |
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| CN104319784B (en) | 2016-08-24 |
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