CN104849586A - Region screening method for alternating current short circuit test - Google Patents
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Abstract
The invention discloses a region screening method for an alternating current short circuit test, which comprises the following steps: A. counting alternating current lines directly connected with a target station, and recording an area formed by the alternating current lines as a first test fault point area; B. calculating load bus voltage data corresponding to each alternating current line in the first test fault point area under the short-circuit fault; C. judging whether an alternating current circuit area meeting the requirement exists or not according to the voltage data of the load bus; if not, adjusting the operation mode of the near area power grid, and returning to the step B; if so, recording the AC line area meeting the requirements as a second test fault point area; D. judging again according to the terrain and environment information; if the requirement is not met, adjusting the operation mode of the near-area power grid, and returning to the step B; and if so, determining the region which is in accordance with the determined result as the actual test fault point region. By adopting the technical scheme, the load low-voltage tripping risk during the alternating current short circuit test can be reduced, and the normal power utilization of the user side is ensured.
Description
Technical field
The present invention relates to electric system simulation and computational analysis field, particularly relate to the region screening technique of a kind of ac short circuit test.
Background technology
Short circuit refers to the situation that path occurs between all abnormal phases or phase and ground (system for neutral ground).Cause the reason of short circuit mainly to comprise: the human accidents such as insulating material is aging, equipment self-defect, severe meteorological condition, on-load broaching tool lock and birds and beasts such as to be connected across on exposed current carrying conductor at other factors.Short trouble can destroy the normal operation of electric system.During short circuit, system voltage significantly reduces, and can require that higher user produces considerable influence to the quality of power supply, even may cause load low pressure trip, this is one of main harm of short trouble.
But, in order to fully understand dynamic perfromance and the Control protection requirement of subelement in electrical network (as flexible AC transmission equipment, HVDC (High Voltage Direct Current) transmission system etc.), need if desired to carry out artificial ac short circuit test.
In the development course of electrical network at home, the demand response ratio of electric power enterprise to user is more passive, but along with the continuous progress of society, electric power enterprise needs interests and the social image of self of considering user more and more.From the angle of number one, user does not wish that this type of test impact is normal and produces and life; From the angle of social influence, electric power enterprise does not wish to damage self-image because of this type of test yet, increases the public opinion pressure of enterprise.For artificial ac short circuit is this kind of, larger test is impacted to electrical network, be reflected in user side mainly Voltage Drop or even load low pressure trip, but electric power enterprise is when formulating ac short circuit testing program, the at present general less low pressure trip risk considering user side, and itself do not form a set of effective method and flow process reduces and avoids this type of risk yet.Therefore, be necessary that a kind of simple and practical approach of searching or method are to balance the interests demand of both sides.
Summary of the invention
The embodiment of the present invention proposes the region screening technique of a kind of ac short circuit test, can reduce load low pressure trip risk during ac short circuit test, ensure the normal electricity consumption of user side.
The region screening technique that the embodiment of the present invention provides a kind of ac short circuit to test, comprising:
A, according to test objective and requirement, in AC network, determine target plant stand, add up the alternating current circuit be directly connected with target plant stand, and the region that described alternating current circuit forms is designated as the first testing failure point region;
B, calculate described first Zhong Ge alternating current circuit, testing failure point region load busbar voltage data corresponding under short trouble;
C, according to described load busbar voltage data, judge whether there is the region, alternating current circuit meeting default testing requirements in the first testing failure point region;
If not, then adjust the method for operation of near region electrical network, and return step B;
If so, then the region, alternating current circuit meeting described testing requirements is designated as the second testing failure point region;
D, according to the terrain information of described second Zhong Ge alternating current circuit, testing failure point region and environmental information, judge whether there is the region, alternating current circuit meeting described testing requirements in the second testing failure point region;
If not, then adjust the method for operation of near region electrical network, and return step B;
If so, then the region, alternating current circuit meeting described testing requirements in the second pilot region is defined as region, actual tests trouble spot.
Further, in described steps A, the region that described alternating current circuit forms is designated as the first testing failure point region, specifically comprises:
The region of whole circuit compositions of each described alternating current circuit is designated as the first testing failure point region.
Further, described step B specifically comprises:
According to the mathematic simulated mode of described target plant stand place AC network, by ac short circuit fault simulation, calculate the load busbar voltage data that described first Zhong Ge alternating current circuit, testing failure point region is corresponding under short trouble;
Wherein, described load busbar voltage data comprise the phase voltage of short trouble instantaneous load bus, line voltage and positive sequence voltage.
Further, the load busbar voltage data that the described first Zhong Ge alternating current circuit, testing failure point region of described calculating is corresponding under short trouble, specifically comprise:
Calculate each alternating current circuit be short-circuited at predetermined interval length place fault time corresponding load busbar voltage data.
Further, described step C specifically comprises:
According to alternating current circuit to be short-circuited at each preset length place fault time corresponding described load busbar voltage data, if when phase voltage, line voltage and positive sequence voltage in arbitrary described load busbar voltage data are all greater than default threshold value, then fault place that described alternating current circuit is short-circuited is defined as short circuit trouble point;
If there is several trouble spots in described first testing failure point region, then determine the region, alternating current circuit that there is Pass Test requirement, wherein, the region, alternating current circuit that described Pass Test requires is made up of the part of path between described short circuit trouble point and continuous two short circuit trouble points, otherwise, determine the region, alternating current circuit that there is not Pass Test requirement.
Further, the method for operation of described adjustment near region electrical network, specifically comprises:
Fill by broken string, circuit sky or jump in plant stand the operation that logical mode adjusts near region electrical network outward.
Implement the embodiment of the present invention, there is following beneficial effect:
The region screening technique of the test of ac short circuit always that the embodiment of the present invention provides, first add up the alternating current circuit be directly connected with described target plant stand, and the region that these alternating current circuits form is designated as the first testing failure point region, by calculating each alternating current circuit load busbar voltage data corresponding under fault, and this voltage data is assessed, judge whether the region, alternating current circuit that there is Pass Test requirement, so that load low pressure trip can not be caused for standard during assessment.If there is no corresponding region, alternating current circuit, then adjust the method for operation of near region electrical network, otherwise the ac bus that Pass Test requires is designated as the second testing failure point region, then in conjunction with the terrain information of each alternating current circuit and environmental information, judges whether the alternating current circuit that there is Pass Test requirement.If there is no corresponding alternating current circuit, then adjust the method for operation of near region electrical network again, if existed, then the alternating current circuit that Pass Test requires is defined as region, actual tests trouble spot.There is no in ac short circuit test compared to prior art and consider load low pressure trip risk, technical solution of the present invention can reduce load low pressure trip risk during ac short circuit test, ensures the normal electricity consumption of user side.And the present invention effectively can instruct formulation and the enforcement of testing program, greatly reduce the examination pressure of electric power enterprise.
Further, the present invention is when calculated load busbar voltage data, according to the mathematic simulated mode of target plant stand place AC network, calculated by ac short circuit fault simulation, using the certain proportion of ac bus total length as interval when choosing short circuit trouble point, precision and the efficiency of calculating can be taken into account, ensure the accuracy of region screening.
Further, when assessing load low pressure trip risk, whether being all greater than default threshold value by comparing the phase voltage of load bus, line voltage and positive sequence voltage respectively, effectively can ensureing that load low pressure trip can not occur in the region selected, improving reliability of the present invention further.
Further, when there is not the alternating current circuit of Pass Test requirement, re-starting screening by the method for operation of adjustment near region electrical network, improving practicality of the present invention and reliability further.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of embodiment of the region screening technique of ac short circuit provided by the invention test;
Fig. 2 is the geographical wiring schematic diagram of a kind of embodiment of near region provided by the invention AC network.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, be the schematic flow sheet of a kind of embodiment of the region screening technique of ac short circuit provided by the invention test, the method comprises the following steps:
Steps A: according to test objective and requirement, determines target plant stand in AC network, adds up the alternating current circuit be directly connected with target plant stand, and the region that described alternating current circuit forms is designated as the first testing failure point region.
In the present embodiment, according to test objective and testing requirements, so that the transformer station of testing or power plant need be carried out as center, add up the alternating current circuit be directly connected with this plant stand, and the region that these alternating current circuits form is designated as the first testing failure point region.First testing failure point region comprises many alternating current circuits, and whole circuits of each alternating current circuit are the first testing failure point region.
Step B: calculate the load busbar voltage data that the first Zhong Ge alternating current circuit, testing failure point region is corresponding under short trouble.
In the present embodiment, fall situation by load busbar voltage and assess load negative pressure dropout risk.Step B specifically comprises: according to the mathematic simulated mode of target plant stand place AC network, by ac short circuit fault simulation, calculates the load busbar voltage data that the first Zhong Ge alternating current circuit, testing failure point region is corresponding under short trouble.Wherein, load busbar voltage data comprise the phase voltage of short trouble instantaneous load bus, line voltage and positive sequence voltage, and the value of this phase voltage, line voltage and positive sequence voltage is effective value.
In the present embodiment, when calculating the load busbar voltage data of the first Zhong Ge alternating current circuit, testing failure point region correspondence under short trouble, for the situation that alternating current circuit is short-circuited at different faults point, calculate each alternating current circuit be short-circuited at predetermined interval length place fault time corresponding load busbar voltage data.Predetermined interval length is the certain proportion of alternating current circuit total length, specifically can adjust according to testing requirements and test objective.
Step C: according to load busbar voltage data, judges whether there is the region, alternating current circuit meeting default testing requirements in the first testing failure point region, if not, then performs step e: the method for operation of adjustment near region electrical network, and returns step B; If so, then step F is performed: the region, alternating current circuit that Pass Test requires is designated as the second testing failure point region.
In the present embodiment, step C specifically comprises: according to alternating current circuit to be short-circuited at each preset length place fault time corresponding load busbar voltage data, if when phase voltage, line voltage and positive sequence voltage in arbitrary load busbar voltage data are all greater than default threshold value, then fault place that this alternating current circuit is short-circuited is defined as short circuit trouble point.If there is several trouble spots in the first testing failure point region, then determine the region, alternating current circuit that there is Pass Test requirement, wherein, the region, alternating current circuit that this Pass Test requires is made up of the part of path between all short circuit trouble points and continuous two short circuit trouble points, otherwise, determine the region, alternating current circuit that there is not Pass Test requirement.The large I of predetermined threshold value is determined according to the applicable cases of AC network mesolow trip gear.
Step D: according to terrain information and the environmental information of the second Zhong Ge alternating current circuit, testing failure point region, judges the region, alternating current circuit that whether there is Pass Test requirement in the second testing failure point region; If not, then perform step e: the method for operation of adjustment near region electrical network, and return step B; If so, then step G is performed: the region, alternating current circuit that Pass Test in the second pilot region requires is defined as region, actual tests trouble spot.
In the present embodiment, the alternating current circuit of screening is except needs consideration low-voltage load dropout risk, also need in conjunction with actual environment and geographic factor, judge according to corresponding environment and geography information, if there is not the alternating current circuit of Pass Test requirement, adjust the method for operation of near region electrical network, and return step B and again screen, if there is the region, alternating current circuit met, then the region, alternating current circuit met is defined as region, actual tests trouble spot.Wherein, this testing failure point region can be wherein a part of circuit of whole piece alternating current circuit or alternating current circuit.
In the present embodiment, the method for operation of the adjustment near region electrical network in step C and step D is mainly to increase the electrical distance of border load bus (bus that namely in short-circuit process, the minimum value of phase voltage, line voltage, positive sequence voltage three effective value is minimum) and short circuit trouble point for target.The method of operation of adjustment near region electrical network, specifically comprises: filled by broken string, circuit sky or jumped in plant stand the operation that logical mode adjusts near region electrical network outward.
In order to better technical solution of the present invention is described, the present invention, for certain actual electric network, introduces the region screening technique of a kind of ac short circuit test that the present invention proposes in detail:
First, the object of the ac short circuit test of this citing mainly debugs the power electronic equipment in 500kV website CX500, and the geographical wiring diagram of CX500 website near region electrical network is illustrated in fig. 2 shown below.Comprise 4 500kV websites (suffix 500) and 23 220kV websites (suffix 220) in Fig. 2, load is connected on the 110kV side bus of 220kV website.According to object and the requirement of test, under the full mode of connection of electrical network, using website CX500 as central site, obtain the first testing failure point region be website CX500 to extraradial 10 500kV alternating current circuits, namely in Fig. 2 website KW500, HD500, MM500 and BL500 respectively with the alternating current circuit of the direct circuit of website CX500.
Then, data are calculated based on the full mode of connection of electrical network (which is for presetting testing program), with 5% of alternating current circuit total length for interval, short-circuit fault simulation is carried out to 10 alternating current circuits in the first testing failure point region, because the parameter of parallel alternating current circuit is basically identical, can only calculate 4 nonparallel alternating current circuits.Under calculating different short trouble each 220kV website 110kV side load bus phase voltage,
Line voltage, positive sequence voltage effective value fall situation, and to compare with load low pressure trip voltage block threshold value, the region, alternating current circuit that Pass Test requires be designated as the second testing failure point region.The Voltage Drop situation of each load bus when calculation of short-circuit current scanning sequence PSD-SCCPC in the power system computation analysis software PSD-BPA adopting Chinese DianKeYuan to develop in this citing carrys out analog computation short trouble, discrimination threshold is defined as 0.7p.u. according to the finding of low pressure-off mouth device in net.In order to concise explanation, after be only described for circuit CX500 ~ HD500, the result of calculation of the crucial short dot of this circuit pack is as shown in table 1 below.According to the data of table 1, under the full mode of connection, on this circuit 40% ~ 65% one section, distance CX500 station be short-circuited fault time, the minimum value of the effective value of the phase voltage of all 110kV load buses, line voltage, positive sequence voltage is all higher than threshold value 0.7p.u., and 40% and 65% these two trouble spots are critical point roughly
Therefore determine that testing failure point region feasible on this circuit is one section of distance CX500 station 40% ~ 65% on circuit.
The Voltage Drop situation (unit: p.u.) of load bus during table 1 full mode of connection line CX500 ~ HD500 upper part key node short circuit.Note: in table, data are the minimum value of effective value of the phase voltage of corresponding 110kV load bus, line voltage, positive sequence voltage, and its rated voltage is 110kV.
After determining that the second testing failure point region is a section of distance CX500 station 40% ~ 65% on circuit, in conjunction with the landform, environment etc. of the inspection of the scene of a crime, judge that the scope at circuit CX500 ~ HD500 upper distance CX500 station about 35% ~ 75% is interior as marshy terrain, be inconvenient to carry out short-circuit test, namely there is not the alternating current circuit meeting requirement of experiment, need adjust operation mode again to screen thus.Consider border load bus situation and test objective, this concrete adjustment mode of illustrating is: the mono-loop line of CX500 ~ HD500 is filled (side, the HD500 station switch namely disconnecting this circuit) from side, CX500 station sky, again calculate, result is as shown in table 2 below.In like manner, according to table 2 result, under this sky fills mode, feasible testing failure point region is one section of distance CX500 station 30% ~ 100% on circuit.Again after Combining with terrain information and environmental information, finally determine that region, actual tests trouble spot is two sections of alternating current circuits that this sky fills distance CX500 station 30% ~ 35% and 75% ~ 100% on circuit.
The mono-loop line of table 2 CX500 ~ HD500 fills the Voltage Drop situation (unit: p.u.) of load bus when this sky mode fills the key node short circuit of circuit upper part from CX500 side sky of standing.Note: in table, data are the minimum value of effective value of the phase voltage of corresponding 110kV load bus, line voltage, positive sequence voltage, and its rated voltage is 110kV.
Finally, for other non-parallel outlets at CX500 station, feasible pilot region can be drawn by above-mentioned steps equally.Relevant unit and department determine trouble spot and the front power system operating mode of test according to final feasible pilot region, and in actual electric network, carried out the test of this ac short circuit.Learn from dispatching of power netwoks information, in process of the test, there is not load low pressure trip event in electrical network, and this also demonstrates the validity of this method further.
Therefore, the region screening technique of a kind of ac short circuit test that the embodiment of the present invention provides, first according to test objective and requirement, target plant stand is determined in AC network, add up the alternating current circuit be directly connected with target plant stand, and the region that these alternating current circuits form is designated as the first testing failure point region, by calculating each alternating current circuit load busbar voltage data corresponding under short trouble, and this voltage data is assessed, judge whether the region, alternating current circuit that there is Pass Test requirement, so that load low pressure trip can not be caused for standard during assessment.If there is no corresponding alternating current circuit, then adjust the method for operation of near region electrical network, otherwise the region, alternating current circuit that Pass Test requires is designated as the second testing failure point region, again in conjunction with the information such as landform, environment of each alternating current circuit, judge whether the region, alternating current circuit that there is Pass Test requirement.If there is no corresponding region, alternating current circuit, then adjust the method for operation of near region electrical network again, if existed, then the region, alternating current circuit that Pass Test requires is defined as region, actual tests trouble spot.There is no in ac short circuit test compared to prior art and consider load low pressure trip risk, technical solution of the present invention can reduce load low pressure trip risk during ac short circuit test, ensures the normal electricity consumption of user side.And the present invention effectively can instruct formulation and the enforcement of testing program, greatly reduce the examination pressure of electric power enterprise.
Further, the present invention is when calculated load busbar voltage data, according to the mathematic simulated mode of target plant stand place AC network, calculated by ac short circuit fault simulation, using the certain proportion of ac bus total length as interval when choosing short circuit trouble point, precision and the efficiency of calculating can be taken into account, ensure the accuracy of region screening.
Further, when assessing load low pressure trip risk, whether being all greater than default threshold value by comparing the phase voltage of load bus, line voltage and positive sequence voltage respectively, effectively can ensureing that load low pressure trip can not occur in the region selected, improving reliability of the present invention further.
Further, when there is not the alternating current circuit of Pass Test requirement, re-starting screening by the method for operation of adjustment near region electrical network, improving practicality of the present invention and reliability further.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (6)
1. a region screening technique for ac short circuit test, is characterized in that, comprising:
A, according to test objective and requirement, in AC network, determine target plant stand, add up the alternating current circuit be directly connected with target plant stand, and the region that described alternating current circuit forms is designated as the first testing failure point region;
B, calculate described first Zhong Ge alternating current circuit, testing failure point region load busbar voltage data corresponding under short trouble;
C, according to described load busbar voltage data, judge whether there is the region, alternating current circuit meeting default testing requirements in the first testing failure point region;
If not, then adjust the method for operation of near region electrical network, and return step B;
If so, then the region, alternating current circuit meeting described testing requirements is designated as the second testing failure point region;
D, according to the terrain information of described second Zhong Ge alternating current circuit, testing failure point region and environmental information, judge whether there is the region, alternating current circuit meeting described testing requirements in the second testing failure point region;
If not, then adjust the method for operation of near region electrical network, and return step B;
If so, then the region, alternating current circuit meeting described testing requirements in the second pilot region is defined as region, actual tests trouble spot.
2. the region screening technique of ac short circuit test according to claim 1, is characterized in that, in described steps A, the region that described alternating current circuit forms is designated as the first testing failure point region, specifically comprises:
The region of whole circuit compositions of each described alternating current circuit is designated as the first testing failure point region.
3. the region screening technique of ac short circuit test according to claim 1, it is characterized in that, described step B specifically comprises:
According to the mathematic simulated mode of described target plant stand place AC network, by ac short circuit fault simulation, calculate the load busbar voltage data that described first Zhong Ge alternating current circuit, testing failure point region is corresponding under short trouble;
Wherein, described load busbar voltage data comprise the phase voltage of short trouble instantaneous load bus, line voltage and positive sequence voltage.
4. the region screening technique of ac short circuit test according to claim 3, is characterized in that the load busbar voltage data that the described first Zhong Ge alternating current circuit, testing failure point region of described calculating is corresponding under short trouble specifically comprise:
Calculate each alternating current circuit be short-circuited at predetermined interval length place fault time corresponding load busbar voltage data.
5. the region screening technique of ac short circuit test according to claim 4, it is characterized in that, described step C specifically comprises:
According to alternating current circuit to be short-circuited at each preset length place fault time corresponding described load busbar voltage data, if when phase voltage, line voltage and positive sequence voltage in arbitrary described load busbar voltage data are all greater than default threshold value, then fault place that described alternating current circuit is short-circuited is defined as short circuit trouble point;
If there is several trouble spots in described first testing failure point region, then determine the region, alternating current circuit that there is Pass Test requirement, wherein, the region, alternating current circuit that described Pass Test requires is made up of the part of path between described short circuit trouble point and continuous two short circuit trouble points, otherwise, determine the region, alternating current circuit that there is not Pass Test requirement.
6. the region screening technique of ac short circuit test according to claim 1, it is characterized in that, the method for operation of described adjustment near region electrical network, specifically comprises:
Fill by broken string, circuit sky or jump in plant stand the operation that logical mode adjusts near region electrical network outward.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105243248A (en) * | 2015-11-17 | 2016-01-13 | 广东电网有限责任公司电力调度控制中心 | Method and system for producing substation main wiring model used for PSD-BPA simulation |
| CN109472006A (en) * | 2018-11-30 | 2019-03-15 | 广西电网有限责任公司电力科学研究院 | A kind of calculated result screening technique based on PSD-BPA |
| CN109884445A (en) * | 2019-02-02 | 2019-06-14 | 中国电力科学研究院有限公司 | Short circuit current control parameter tuning method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201716374U (en) * | 2010-01-22 | 2011-01-19 | 云南电力试验研究院(集团)有限公司 | Portable type manual short circuit test transmitting device |
| CN102565592A (en) * | 2012-01-18 | 2012-07-11 | 绍兴电力局 | Technology-systematization verification short-circuit test method for intelligent substation |
| CN203350276U (en) * | 2013-07-04 | 2013-12-18 | 国家电网公司 | Pneumatic emitting device used for high-tension line artificial short circuit test |
| CN104049158A (en) * | 2014-05-13 | 2014-09-17 | 国家电网公司 | Single-phase instant artificial grounding short-circuit test system for power transmission line |
| KR101546715B1 (en) * | 2014-07-03 | 2015-08-24 | 한국에너지기술연구원 | Short test apparatus for inverter of photovoltaic power generating system and the method thereof |
-
2015
- 2015-04-22 CN CN201510193531.1A patent/CN104849586A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201716374U (en) * | 2010-01-22 | 2011-01-19 | 云南电力试验研究院(集团)有限公司 | Portable type manual short circuit test transmitting device |
| CN102565592A (en) * | 2012-01-18 | 2012-07-11 | 绍兴电力局 | Technology-systematization verification short-circuit test method for intelligent substation |
| CN203350276U (en) * | 2013-07-04 | 2013-12-18 | 国家电网公司 | Pneumatic emitting device used for high-tension line artificial short circuit test |
| CN104049158A (en) * | 2014-05-13 | 2014-09-17 | 国家电网公司 | Single-phase instant artificial grounding short-circuit test system for power transmission line |
| KR101546715B1 (en) * | 2014-07-03 | 2015-08-24 | 한국에너지기술연구원 | Short test apparatus for inverter of photovoltaic power generating system and the method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 李春华 等: "南方电网±200 Mvar静止同步补偿器人工短路试验及分析", 《电力系统自动化》 * |
| 王科鹏: "10kV线路人工三相短路接地试验", 《云南电力技术》 * |
| 肖磊石 等: "南方电网输电线路瞬时人工接地短路试验", 《南方电网技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105243248A (en) * | 2015-11-17 | 2016-01-13 | 广东电网有限责任公司电力调度控制中心 | Method and system for producing substation main wiring model used for PSD-BPA simulation |
| CN105243248B (en) * | 2015-11-17 | 2018-03-06 | 广东电网有限责任公司电力调度控制中心 | Plant stand main electrical scheme model generating method and system for PSD BPA emulation |
| CN109472006A (en) * | 2018-11-30 | 2019-03-15 | 广西电网有限责任公司电力科学研究院 | A kind of calculated result screening technique based on PSD-BPA |
| CN109884445A (en) * | 2019-02-02 | 2019-06-14 | 中国电力科学研究院有限公司 | Short circuit current control parameter tuning method and device |
| CN109884445B (en) * | 2019-02-02 | 2022-12-09 | 中国电力科学研究院有限公司 | Parameter setting method and device for short-circuit current control |
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