CN103414188A - Optical configuration method of supergrid controllable phase shifter - Google Patents
Optical configuration method of supergrid controllable phase shifter Download PDFInfo
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- CN103414188A CN103414188A CN2013103848338A CN201310384833A CN103414188A CN 103414188 A CN103414188 A CN 103414188A CN 2013103848338 A CN2013103848338 A CN 2013103848338A CN 201310384833 A CN201310384833 A CN 201310384833A CN 103414188 A CN103414188 A CN 103414188A
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Abstract
The invention relates to an optical configuration method of a supergrid controllable phase shifter. The optical configuration method of the supergrid controllable phase shifter comprises the following steps that firstly, a plurality of configuration schemes of the controllable phase shifter are generated; secondly, the rigid demand and the adaptability which exist after the controllable phase shifter is additionally arranged based on each candidate scheme are calculated according to the set supergrid load flow target; thirdly, the short-circuit current level, existing before the controllable phase shifter is additionally arranged according to each candidate scheme, of a supergrid is calculated, the short-circuit current level, existing after the controllable phase shifter is additionally arranged according to each candidate scheme, of the supergrid is calculated, the short-circuit current value, existing before the controllable phase shifter is additionally arranged, of the supergrid and the short-circuit current value, existing after the controllable phase shifter is additionally arranged, of the supergrid are compared, and whether the short-circuit current restraining effect of each candidate scheme can meet the design requirement is judged according to comparison results; fourthly, the quantity of line load flow variation caused by the change of each unit phase shifting angle after the controllable phase shifter is additionally arranged according to each candidate scheme is calculated; fifthly, the cost and investment of additional arrangement of the controllable phase shifter according to each candidate scheme are calculated; sixthly, according the controllable phase shifter configuration scheme which is output finally, the installation position of the controllable phase shifter is controlled. Compared with the prior art, the optical configuration method of the supergrid controllable phase shifter has the advantages of being capable of improving the delivery capacity of the supergrid and the access utilization ratio of the supergrid and the like.
Description
Technical field
The present invention relates to power transmission network tide optimization control technology field, especially relate to a kind of supergrid controllable phase shifter Optimal Configuration Method.
Background technology
But there is the 500kV grid power transmission caused because of the trend inequality problem of being obstructed for a long time in large receiving-end grid, the heavy duty of part circuit and part circuit utilization ratio deficiency, and extra-high-voltage alternating current put into operation after with the 500kV electrical network between electromagnetic looped network this problem will constantly be given prominence to.Building unified strong intelligent grid is the strategic objective that State Grid Corporation of China proposes, and the electric network swim control technology is one of them important component part.The application of flexible AC transmission technology FACTS, can realize the adjustment of trend and short circuit current, effectively excavates and improve existing electrical network and carry and be subjected to power, the unnecessary power grid construction of minimizing to invest.
Therefore, when the reinforcement extra-high voltage grid builds to solve receiving end area electric power safeguard, in the urgent need to fully excavating the potentiality of existing electrical network, grasp supergrid controllable phase shifter key technology, the feasibility that the research demonstration project is built, solve the transmission of electricity bottleneck problem that the trend skewness causes, effectively improve electric network transportation ability and power grid asset utilization ratio, to obtain maximum margin of safety and minimum Transmission Cost.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of supergrid controllable phase shifter Optimal Configuration Method that improves electric network transportation ability and power grid asset utilization ratio for the defect that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of supergrid controllable phase shifter Optimal Configuration Method, the method comprises the following steps:
1) the scheme generation module, according to the transmission of electricity bottleneck of trend heavy duty passage and section and existence in electrical network typical operation modes tidal current analysis acquisition electrical network, generates a plurality of controllable phase shifter configuration alternatives, and sends to the calculating judge module;
2) calculate judge module and according to the electric network swim target of setting, calculate under each alternative rigid demand and the adaptability installed additional after controllable phase shifter, judge successively whether rigid demand and adaptability under each alternative meet the setting requirement, if not, delete corresponding alternative;
3) calculate judge module and calculate under each alternative the short circuit current level that installs controllable phase shifter front and back electrical network additional, relatively install the grid short circuit current value of controllable phase shifter front and back additional, whether the short circuit current inhibition that judges each alternative according to comparative result meets the setting requirement, if not, delete corresponding alternative;
4) calculate judge module calculate under each alternative install controllable phase shifter additional after the unit phase shifting angle change caused Line Flow variable quantity size, judge whether the Line Flow variable quantity under each alternative is less than set point, if delete corresponding alternative;
5) calculate judge module and calculate the cost investment that installs controllable phase shifter under each alternative additional, and each alternative is sorted by the cost investment, and the minimum alternative of output cost investment;
6) control Executive Module and according to the controllable phase shifter allocation plan that calculates the final output of judge module, control the installation site of controllable phase shifter.
During described generation controllable phase shifter configuration alternative, the trend in electrical network on control circuit is less than or equal to its stability limit.
The electric network swim target of described setting comprises following Electric Power Network Planning target and electrical network technological transformation target.
The rigid demand of installing additional under each alternative of described calculating after controllable phase shifter is specially:
21) according to the following electric network data of the electric network swim Target Acquisition of setting;
22) according to following electric network data, electrical network is carried out to trend calculating;
23) whether judgement installs the demand of controllable phase shifter in addition additional under current alternative according to result of calculation, if not, judges that the rigid demand under current alternative meets the setting requirement.
The adaptability installed additional under each alternative of described calculating after controllable phase shifter is specially: change electric network composition and parameter, judge whether current scheme has adaptability, if judge that the adaptability under current alternative meets the setting requirement.
Described short circuit current inhibition meets setting and requires to refer to: install additional before and after controllable phase shifter, busbar short-circuit electric current fall is greater than 1kA.
Compared with prior art, the present invention has the following advantages:
1, solve the transmission of electricity bottleneck problem that the trend skewness causes, effectively improve electric network transportation ability and power grid asset utilization ratio, to obtain maximum margin of safety and minimum Transmission Cost.
2, reach the purpose that improves the key sections conveying capacity and suppress short circuit current, improved the stability of operation of power networks.
3, farthest bring into play value and the advantage of controllable phase shifter, and have certain economy.
The accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.The present embodiment be take technical solution of the present invention and is implemented as prerequisite, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, a kind of supergrid controllable phase shifter Optimal Configuration Method, the method comprises the following steps:
1) the scheme generation module, according to the transmission of electricity bottleneck of trend heavy duty passage and section and existence in electrical network typical operation modes tidal current analysis acquisition electrical network, generates a plurality of controllable phase shifter configuration alternatives, and is transferred to the calculating judge module.When the scheme generation module generated controllable phase shifter configuration alternative, the system load flow demand for control of take was target with raising section conveying capacity, and the trend in electrical network on control circuit is less than or equal to its stability limit.
2) calculate judge module and according to the electric network swim target of setting, calculate under each alternative rigid demand and the adaptability installed additional after controllable phase shifter, judge successively whether rigid demand and adaptability under each alternative meet the setting requirement, if not, delete corresponding alternative.
The electric network swim target of described setting comprises following Electric Power Network Planning target and electrical network technological transformation target.
The rigid demand of installing additional under each alternative of described calculating after controllable phase shifter is specially:
21) according to the following electric network data of the electric network swim Target Acquisition of setting;
22) according to following electric network data, electrical network is carried out to trend calculating;
23) whether judgement installs the demand of controllable phase shifter in addition additional under current alternative according to result of calculation, if not, judges that the rigid demand under current alternative meets the setting requirement.
The adaptability installed additional under each alternative of described calculating after controllable phase shifter is specially: change electric network composition and parameter, judge whether current scheme has adaptability, if judge that the adaptability under current alternative meets the setting requirement.
3) calculate judge module and calculate under each alternative the short circuit current level that installs controllable phase shifter front and back electrical network additional, relatively install the grid short circuit current value of controllable phase shifter front and back additional, whether the short circuit current inhibition that judges each alternative according to comparative result meets the setting requirement, if not, delete corresponding alternative.
Calculating under each alternative the short circuit current level that installs controllable phase shifter front and back electrical network additional is specially:
31) to installing controllable phase shifter electrical network before additional, carry out calculation of short-circuit current;
32) to installing controllable phase shifter electrical network afterwards additional, carry out the short circuit current calculation;
33) compare each plant stand short circuit current situation of change in electrical network, pay close attention to the plant stand that short circuit current level is larger.
Described short circuit current inhibition meets setting and requires to refer to: install additional before and after controllable phase shifter, busbar short-circuit electric current fall is greater than 1kA.
4) calculate judge module calculate under each alternative install controllable phase shifter additional after the unit phase shifting angle change caused Line Flow variable quantity size, judge whether the Line Flow variable quantity under each alternative is less than set point, if delete corresponding alternative.If the unit phase shifting angle changes and causes the Line Flow variable quantity greatly, show that the trend control ability is stronger.
5) calculate judge module and calculate the cost investment that installs controllable phase shifter under each alternative additional, and each alternative is sorted by the cost investment, the minimum alternative of output cost investment.
6) control Executive Module and according to the controllable phase shifter allocation plan that calculates the final output of judge module, control the installation site of controllable phase shifter.
Claims (6)
1. a supergrid controllable phase shifter Optimal Configuration Method, is characterized in that, the method comprises the following steps:
1) the scheme generation module, according to the transmission of electricity bottleneck of trend heavy duty passage and section and existence in electrical network typical operation modes tidal current analysis acquisition electrical network, generates a plurality of controllable phase shifter configuration alternatives, and sends to the calculating judge module;
2) calculate judge module and according to the electric network swim target of setting, calculate under each alternative rigid demand and the adaptability installed additional after controllable phase shifter, judge successively whether rigid demand and adaptability under each alternative meet the setting requirement, if not, delete corresponding alternative;
3) calculate judge module and calculate under each alternative the short circuit current level that installs controllable phase shifter front and back electrical network additional, relatively install the grid short circuit current value of controllable phase shifter front and back additional, whether the short circuit current inhibition that judges each alternative according to comparative result meets the setting requirement, if not, delete corresponding alternative;
4) calculate judge module calculate under each alternative install controllable phase shifter additional after the unit phase shifting angle change caused Line Flow variable quantity size, judge whether the Line Flow variable quantity under each alternative is less than set point, if delete corresponding alternative;
5) calculate judge module and calculate the cost investment that installs controllable phase shifter under each alternative additional, and each alternative is sorted by the cost investment, and the minimum alternative of output cost investment;
6) control Executive Module and according to the controllable phase shifter allocation plan that calculates the final output of judge module, control the installation site of controllable phase shifter.
2. a kind of supergrid controllable phase shifter Optimal Configuration Method according to claim 1, is characterized in that, during described generation controllable phase shifter configuration alternative, the trend in electrical network on control circuit is less than or equal to its stability limit.
3. a kind of supergrid controllable phase shifter Optimal Configuration Method according to claim 1, is characterized in that, the electric network swim target of described setting comprises following Electric Power Network Planning target and electrical network technological transformation target.
4. a kind of supergrid controllable phase shifter Optimal Configuration Method according to claim 3, is characterized in that, the rigid demand of installing additional under each alternative of described calculating after controllable phase shifter is specially:
21) according to the following electric network data of the electric network swim Target Acquisition of setting;
22) according to following electric network data, electrical network is carried out to trend calculating;
23) whether judgement installs the demand of controllable phase shifter in addition additional under current alternative according to result of calculation, if not, judges that the rigid demand under current alternative meets the setting requirement.
5. a kind of supergrid controllable phase shifter Optimal Configuration Method according to claim 1, it is characterized in that, the adaptability installed additional under each alternative of described calculating after controllable phase shifter is specially: change electric network composition and parameter, judge whether current scheme has adaptability, if judge that the adaptability under current alternative meets the setting requirement.
6. a kind of supergrid controllable phase shifter Optimal Configuration Method according to claim 1, is characterized in that, described short circuit current inhibition meets setting and requires to refer to: install additional before and after controllable phase shifter, busbar short-circuit electric current fall is greater than 1kA.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904645A (en) * | 2014-03-27 | 2014-07-02 | 国家电网公司 | Phase-shifting transformer site selecting method |
| CN106159937A (en) * | 2015-04-01 | 2016-11-23 | 国家电网公司 | A kind of method improving multichannel section ability to transmit electricity |
| CN113964839A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Looped network power flow adjusting method, device, equipment and medium based on phase-shifting transformer |
Citations (2)
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| US6710742B1 (en) * | 2001-10-23 | 2004-03-23 | Kathrein-Werke Kg | Active antenna roof top system and method |
| CN103166217A (en) * | 2011-12-13 | 2013-06-19 | 浙江省电力公司 | Transmission grid phase shifter optimal configuration method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6710742B1 (en) * | 2001-10-23 | 2004-03-23 | Kathrein-Werke Kg | Active antenna roof top system and method |
| CN103166217A (en) * | 2011-12-13 | 2013-06-19 | 浙江省电力公司 | Transmission grid phase shifter optimal configuration method |
Non-Patent Citations (1)
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| 赵学强等: "华东电网安装移相变压器的研究", 《华东电力》, vol. 34, no. 11, 30 November 2006 (2006-11-30), pages 30 - 33 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904645A (en) * | 2014-03-27 | 2014-07-02 | 国家电网公司 | Phase-shifting transformer site selecting method |
| CN106159937A (en) * | 2015-04-01 | 2016-11-23 | 国家电网公司 | A kind of method improving multichannel section ability to transmit electricity |
| CN106159937B (en) * | 2015-04-01 | 2018-10-23 | 国家电网公司 | A method of improving multichannel section ability to transmit electricity |
| CN113964839A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Looped network power flow adjusting method, device, equipment and medium based on phase-shifting transformer |
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