CN105117865A - Power transmission line patrolling strategy method based on lightning fault insulation recovery characteristic - Google Patents
Power transmission line patrolling strategy method based on lightning fault insulation recovery characteristic Download PDFInfo
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Abstract
The invention relates to a power transmission line patrolling strategy method based on a lightning fault insulation recovery characteristic. The flashover damage situation and the insulation characteristic recovery situation of an insulator are analyzed according to monitoring information generated at a fault moment, and finally a line patrolling strategy is provided. The method mainly comprises the following steps: firstly, acquiring the monitoring information at the fault moment; secondly, analyzing the characteristic according to the acquired monitoring information, and determining a fault position and the type of the fault; then determining the insulation damage degree and the insulation recovery performance of each fault; finally providing the line patrolling strategy according to the damage degree and the insulation recovery performance of the insulator. According to the power transmission line patrolling strategy method, the corresponding line patrolling strategy is provided based on the lightning fault insulation recovery characteristic at first, so that the power failure time is shortened to the maximum extent, and the safe operation of a power grid is guaranteed; meanwhile, the safety of a patroller is guaranteed, and the line patrolling efficiency is improved. The implementation process of the method is clear, and the method is put into the actual application of engineering; a good economical effect and social benefits are achieved.
Description
Technical field
The inventive method relates to transmission line malfunction line walking and operational management field, is specifically related to a kind of transmission line lightning stroke fault line walking strategy process.
Background technology
Statistics shows: thunderbolt is the first reason causing transmission line malfunction to trip, and accounts for more than 60% of all types fault, is electrical network chief threat, is also the most important thing that electrical network lightning protection and maintenance work are paid close attention to.In electrical network maintenance work flow process in the past, after transmission line of electricity trips, artificial line walking need be carried out immediately, looking up the fault point and failure cause, need to fix a breakdown in time reason for fault, ensure to close a floodgate smoothly.But the transient faults such as thunderbolt are multiple is born in strong wind, rainstorm weather, line walking environment is extremely severe, and be continuous several hundred kilometers, span of circuit is large simultaneously, both cannot ensure line walking efficiency, and easily cause casualties again, device damage.And most lightning fault, as long as flashover does not cause the permanent damage of insulator, after reserved certain electric arc goes the free time, first fast recovery of power supply can be passed through completely, reduce breakdown loss, when customary line walking, check insulator degree of impairment, and whether change when determining next line outage; For the transient fault having Return stroke electric current, reclosing is often unsuccessful, first can throw by force restore electricity completely, and then according to insulator dielectric restorability reasonable arrangement line walking strategy.
At present, also there is no technology or method based on insulator degree of injury and insulation recovery performance, science formulates lightning fault line walking strategy, at utmost reduce fault outage loss and operation and maintenance expenses use, therefore, in order to the intelligent management level of make rational planning for line walking strategy and raising electrical network, the line walking strategy process based on thunderbolt insulator degree of injury and insulation recovery performance will have the raising of matter to the operation and maintenance level of electrical network.
Summary of the invention
In order to solve the low of long-standing problem transmission line lightning stroke line walking efficiency and the irrational situation of line walking policy development, first according to travelling wave current feature, judge thunderbolt type, then based on insulator degree of injury and insulation recovery performance, provide line walking strategy and suggestion.
A kind of power transmission line inspection strategy process based on thunderbolt insulation recovery feature of the present invention, can realize based on following technology path:
Step one: obtain monitoring information when fault occurs.When described fault occurs, monitoring information comprises the capable wave voltage waveform of ABC three-phase conducting wire fault moment of fault moment, the ABC three-phase conducting wire fault moment power current waveform of each monitoring point, the ABC three-phase conducting wire fault moment travelling wave current waveform of each monitoring point, each monitoring point; The principle that described monitoring point is determined is that every N kilometer determines a monitoring location, and N gets 20 ~ 30.
Step 2: determine abort situation and type.Described abort situation is the position of insulator generation flashover, and described fault type comprises shielding singlephase earth fault, shielding double earthfault, shielding three-phase ground fault, counterattack singlephase earth fault, counterattack double earthfault, counterattack three-phase ground fault.The determination methods of described shielding singlephase earth fault be have and only have a certain phase conductor fault moment power current waveform to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only had the amplitude place of a certain phase conductor fault moment travelling wave current waveform before main ripple without any pulse; The determination methods of described shielding double earthfault be have and only have certain two-phase breakdown of conducting wires moment power current waveform all to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only had the amplitude place of certain two-phase breakdown of conducting wires moment travelling wave current waveform before main ripple all without any pulse; The determination methods of described shielding three-phase ground fault is that three-phase conducting wire fault moment power current waveform all has the feature being classified as zero by normal load power current to the fault power current increased again, simultaneously the amplitude place of described three-phase conducting wire fault moment travelling wave current waveform before main ripple all without any pulse; The determination methods of described counterattack singlephase earth fault be have and only have a certain phase conductor fault moment power current waveform to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only have the amplitude place of a certain phase conductor fault moment travelling wave current waveform before main ripple, have pulse opposite polarity with main ripple; The determination methods of described counterattack double earthfault be have and only have certain two-phase breakdown of conducting wires moment power current waveform all to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only have the amplitude place of certain two-phase breakdown of conducting wires moment travelling wave current waveform before main ripple, have pulse opposite polarity with main ripple; The determination methods of described counterattack three-phase ground fault is that three-phase conducting wire fault moment power current waveform all has the feature being classified as zero by normal load power current to the fault power current increased again, and there was pulse opposite polarity with main ripple in the amplitude place of described three-phase conducting wire fault moment travelling wave current waveform before main ripple simultaneously.
Step 3: analyze around, counterattack insulation harm degree and restorability.Based on the amplitude of lightning current of described fault moment, described abort situation, described fault type, apart from the fault phase travelling wave current waveform of the nearest monitoring point of described abort situation and row wave voltage waveform, insulator damage and the assessment of insulation recovery rule around, counterattack insulation harm degree and restorability.
Step 4: provide line walking strategy.Shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is I, and line walking strategy is for need not take any line walking measure; Shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is II, and line walking strategy changes insulator for during maintenance; Shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is III, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is I, and line walking strategy changes insulator for during maintenance; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is II, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is I, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is II, and line walking strategy is for change insulator immediately; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately.Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is I, and line walking strategy is for need not take any line walking measure; Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is II, and line walking strategy changes insulator for during maintenance; Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is III, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is I, and line walking strategy changes insulator for during maintenance; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is II, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is I, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is II, and line walking strategy is for change insulator immediately; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately.
Accompanying drawing explanation
A kind of power transmission line inspection strategy process process flow diagram based on lightning fault insulation recovery feature of Fig. 1
There is shielding tripping operation A phase power frequency fault current waveform figure in Fig. 2 a circuit moment 1
There is shielding tripping operation A phase fault travelling wave current oscillogram in Fig. 3 a circuit moment 1
There is shielding tripping operation A phase insulator damage figure in Fig. 4 a circuit moment 1
There is counterattack tripping operation C phase power frequency fault current waveform figure in Fig. 5 b circuit moment 2
There is counterattack tripping operation C phase fault travelling wave current oscillogram in Fig. 6 b circuit moment 2
There is counterattack tripping operation C phase insulator damage figure in Fig. 7 b circuit moment 2
Embodiment
For a better understanding of the present invention based on a power transmission line inspection strategy process for lightning fault insulation recovery feature, be described further in conjunction with relevant indicators.
Fig. 1 is a kind of better process flow diagram of power transmission line inspection strategy process based on lightning fault insulation recovery feature of the present invention.
First implementation step S1 obtains monitoring information when fault occurs.
When implementing this step, there is the capable wave voltage waveform of ABC three-phase conducting wire fault moment that moment monitoring information comprises fault moment, the ABC three-phase conducting wire fault moment power current waveform of each monitoring point, the ABC three-phase conducting wire fault moment travelling wave current waveform of each monitoring point, each monitoring point in fault; The principle that monitoring point is determined is that every N kilometer determines a monitoring location, and N gets 20 ~ 30, and the principle of this layout monitoring point is that the be expert at degree of decay and distortion in ripple transmitting procedure does not affect its feature Optimum Economic scheme.When fault occurs, the monitoring terminal arranged at each monitoring point ABC three-phase conducting wire gathers fault generation moment monitoring information, and uploads to data processing centre (DPC) by GPRS public communication network, so just obtains monitoring information when fault occurs.
Following implementation step S2 determines abort situation and type.
When implementing this step, abort situation is the position of insulator generation flashover, and fault type comprises shielding singlephase earth fault, shielding double earthfault, shielding three-phase ground fault, counterattack singlephase earth fault, counterattack double earthfault, counterattack three-phase ground fault.The determination methods of described shielding singlephase earth fault be have and only have a certain phase conductor fault moment power current waveform to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only had the amplitude place of a certain phase conductor fault moment travelling wave current waveform before main ripple without any pulse; The determination methods of described shielding double earthfault be have and only have certain two-phase breakdown of conducting wires moment power current waveform all to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only had the amplitude place of certain two-phase breakdown of conducting wires moment travelling wave current waveform before main ripple all without any pulse; The determination methods of described shielding three-phase ground fault is that three-phase conducting wire fault moment power current waveform all has the feature being classified as zero by normal load power current to the fault power current increased again, simultaneously the amplitude place of described three-phase conducting wire fault moment travelling wave current waveform before main ripple all without any pulse; The determination methods of described counterattack singlephase earth fault be have and only have a certain phase conductor fault moment power current waveform to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only have the amplitude place of a certain phase conductor fault moment travelling wave current waveform before main ripple, have pulse opposite polarity with main ripple; The determination methods of described counterattack double earthfault be have and only have certain two-phase breakdown of conducting wires moment power current waveform all to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only have the amplitude place of certain two-phase breakdown of conducting wires moment travelling wave current waveform before main ripple, have pulse opposite polarity with main ripple; The determination methods of described counterattack three-phase ground fault is that three-phase conducting wire fault moment power current waveform all has the feature being classified as zero by normal load power current to the fault power current increased again, and there was pulse opposite polarity with main ripple in the amplitude place of described three-phase conducting wire fault moment travelling wave current waveform before main ripple simultaneously.There is tripping fault in certain a circuit moment 1, according to acquisition data analysis, only have the power current of A phase conductor fault moment collection meet normal load power current to increase fault power current be classified as again zero feature, as shown in Figure 2, then can judge that this lightning fault is A phase singlephase earth fault, fault A phase travelling wave current oscillogram as shown in Figure 3, the amplitude place of travelling wave current waveform before main ripple without any pulse, then can judge that this lightning fault is shielding fault, therefore there is A phase single-phase earthing shielding fault in certain a circuit moment 1.There is tripping fault in certain b circuit moment 2, according to acquisition data analysis, only have the power current of C phase conductor fault moment collection meet normal load power current to increase fault power current be classified as again zero feature, as shown in Figure 5, then can judge that this lightning fault is C phase singlephase earth fault, fault C phase travelling wave current oscillogram as shown in Figure 6, there was pulse opposite polarity with main ripple in the amplitude place of travelling wave current waveform before main ripple, then can judge that this lightning fault is as counterattack fault, therefore there is C phase single-phase earthing counterattack fault in certain b circuit moment 2.
On the basis of step S2, implementation step S3 analyzes around, counterattack insulation harm degree and restorability.
When implementing this step, based on the amplitude of lightning current of fault moment, abort situation, fault type, apart from the fault phase travelling wave current waveform of the nearest monitoring point of described abort situation and row wave voltage waveform, insulator damage and the assessment of insulation recovery rule around, counterattack insulation harm degree and restorability.
Last implementation step S4 provides line walking strategy.
When implementing this step, need divide around, counterattack fault phase insulator degree of injury grade and insulation recovery performance rate, then formulate line walking measure according to insulator degree of injury grade and insulation recovery performance rate.Shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is I, and line walking strategy is for need not take any line walking measure; Shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is II, and line walking strategy changes insulator for during maintenance; Shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is III, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is I, and line walking strategy changes insulator for during maintenance; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is II, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is I, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is II, and line walking strategy is for change insulator immediately; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately.Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is I, and line walking strategy is for need not take any line walking measure; Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is II, and line walking strategy changes insulator for during maintenance; Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is III, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is I, and line walking strategy changes insulator for during maintenance; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is II, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is I, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is II, and line walking strategy is for change insulator immediately; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately.As Fig. 2 a circuit moment 1, shielding tripping operation A phase power frequency fault current waveform figure occurred, fault A phase power frequency fault current amplitudes is 10245A; There is shielding tripping operation A phase fault travelling wave current oscillogram in Fig. 3 a circuit moment 1, A phase fault travelling wave current waveforms amplitude is 5049A; Amplitude of lightning current is 82.5kA; Can judge that this shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is III, line walking strategy is for change insulation immediately; As Fig. 4 be track walker change insulator time the photo taken, insulator generation penetrability punctures as can be seen from Figure, and major injury occurs.As Fig. 5 b circuit moment 2, counterattack tripping operation C phase power frequency fault current waveform figure occurred, fault C phase power frequency fault current amplitudes is 7461A; There is counterattack tripping operation C phase fault travelling wave current oscillogram in Fig. 6 b circuit moment 2, C phase fault travelling wave current waveforms amplitude is 2400A; Amplitude of lightning current is 41.2kA; Can judge that this shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is I, line walking strategy is for need not take any line walking measure; If Fig. 7 is the photo of shooting, be struck by lightning as can be seen from Figure and almost any damage is not caused to insulator.
Claims (5)
1. based on a power transmission line inspection strategy process for lightning fault insulation recovery feature, it is characterized in that, based on the fault moment shape information gathered, analyze insulator degree of injury and insulation recovery performance, provide line walking result, step is as follows:
Obtain monitoring information when fault occurs;
Determine abort situation and type;
Analyze around, counterattack insulation harm degree and restorability;
Provide line walking strategy.
2. according to the power transmission line inspection strategy process of claim 1 one kind based on lightning fault insulation recovery feature, step obtains monitoring information when fault occurs, it is characterized in that, when described fault occurs, monitoring information comprises the capable wave voltage waveform of ABC three-phase conducting wire fault moment of fault moment, the ABC three-phase conducting wire fault moment power current waveform of each monitoring point, the ABC three-phase conducting wire fault moment travelling wave current waveform of each monitoring point, each monitoring point; The principle that described monitoring point is determined is that every N kilometer determines a monitoring location, and N gets 20 ~ 30.
3. according to the power transmission line inspection strategy process of claim 1 one kind based on lightning fault insulation recovery feature, step determination abort situation and type, it is characterized in that, described abort situation is the position of insulator generation flashover, and described fault type comprises shielding singlephase earth fault, shielding double earthfault, shielding three-phase ground fault, counterattack singlephase earth fault, counterattack double earthfault, counterattack three-phase ground fault.The determination methods of described shielding singlephase earth fault be have and only have a certain phase conductor fault moment power current waveform to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only had the amplitude place of a certain phase conductor fault moment travelling wave current waveform before main ripple without any pulse; The determination methods of described shielding double earthfault be have and only have certain two-phase breakdown of conducting wires moment power current waveform all to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only had the amplitude place of certain two-phase breakdown of conducting wires moment travelling wave current waveform before main ripple all without any pulse; The determination methods of described shielding three-phase ground fault is that three-phase conducting wire fault moment power current waveform all has the feature being classified as zero by normal load power current to the fault power current increased again, simultaneously the amplitude place of described three-phase conducting wire fault moment travelling wave current waveform before main ripple all without any pulse; The determination methods of described counterattack singlephase earth fault be have and only have a certain phase conductor fault moment power current waveform to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only have the amplitude place of a certain phase conductor fault moment travelling wave current waveform before main ripple, have pulse opposite polarity with main ripple; The determination methods of described counterattack double earthfault be have and only have certain two-phase breakdown of conducting wires moment power current waveform all to have to be classified as again to the fault power current increased by normal load power current zero feature, have simultaneously and only have the amplitude place of certain two-phase breakdown of conducting wires moment travelling wave current waveform before main ripple, have pulse opposite polarity with main ripple; The determination methods of described counterattack three-phase ground fault is that three-phase conducting wire fault moment power current waveform all has the feature being classified as zero by normal load power current to the fault power current increased again, and there was pulse opposite polarity with main ripple in the amplitude place of described three-phase conducting wire fault moment travelling wave current waveform before main ripple simultaneously.
4. according to the power transmission line inspection strategy process of claim 1 one kind based on lightning fault insulation recovery feature, step is analyzed around, counterattack insulation harm degree and restorability, it is characterized in that, based on the amplitude of lightning current of described fault moment, described abort situation, described fault type, apart from the fault phase travelling wave current waveform of the nearest monitoring point of described abort situation and row wave voltage waveform, insulator damage and the assessment of insulation recovery rule around, counterattack insulation harm degree and restorability.
5. according to the power transmission line inspection strategy process of claim 1 one kind based on lightning fault insulation recovery feature, step provides line walking strategy, it is characterized in that, shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is I, line walking strategy is for need not take any line walking measure; Shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is II, and line walking strategy changes insulator for during maintenance; Shielding fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is III, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is I, and line walking strategy changes insulator for during maintenance; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is II, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is I, routine replacement insulator when line walking strategy is regular line walking; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is II, and line walking strategy is for change insulator immediately; Shielding fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately.Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is I, and line walking strategy is for need not take any line walking measure; Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is II, and line walking strategy changes insulator for during maintenance; Counterattack fault phase insulator degree of injury grade is I level, and insulation recovery performance rate is III, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is I, and line walking strategy changes insulator for during maintenance; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is II, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is II level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is I, routine replacement insulator when line walking strategy is regular line walking; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is II, and line walking strategy is for change insulator immediately; Counterattack fault phase insulator degree of injury grade is III level, and insulation recovery performance rate is III, and line walking strategy is for change insulator immediately.
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| CN114910739A (en) * | 2022-04-25 | 2022-08-16 | 广东电网有限责任公司 | Lightning stroke detection method, device, equipment and storage medium |
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Address after: 529099 Pengjiang District, Jiangmen, Guangdong Province, construction No. two, No. 152 Applicant after: JIANGMEN POWER SUPPLY BUREAU, GUANGDONG POWER GRID CO., LTD. Applicant after: Wuhan Sunshine Power Science & Technology Co., Ltd. Address before: 529099 Pengjiang District, Jiangmen, Guangdong Province, construction No. two, No. 152 Applicant before: JIANGMEN POWER SUPPLY BUREAU Applicant before: Wuhan Sunshine Power Science & Technology Co., Ltd. |
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Inventor after: Li Mingjun Inventor after: Li Guohua Inventor after: Liu Tianshao Inventor after: Chen Zhifeng Inventor after: Ma Chengzhi Inventor after: Huang Yaosheng Inventor after: Wang Yonghua Inventor after: Wu Chuiming Inventor after: Chen Jin Inventor after: Xu Qiaoyun Inventor after: Liu Xiaojin Inventor after: Fan Yazhou Inventor after: Ou Yuqiang Inventor after: Gan Tuanjie Inventor after: Wen Jianzhong Inventor after: Tang Zhenpeng Inventor after: Zeng Weiling Inventor after: Chen Jianping Inventor after: Xu Ping Inventor before: Li Mingjun Inventor before: Chen Jianping Inventor before: Xu Ping Inventor before: Li Guohua Inventor before: Liu Tianshao Inventor before: Chen Zhifeng Inventor before: Ma Chengzhi Inventor before: Huang Yaosheng Inventor before: Wang Yonghua Inventor before: Wu Chuiming Inventor before: Chen Jin Inventor before: Zhang Guoqing Inventor before: Xu Qiaoyun Inventor before: Liu Xiaojin Inventor before: Fan Yazhou Inventor before: Dou Xianhe Inventor before: Ou Yuqiang Inventor before: Gan Tuanjie Inventor before: Wen Jianzhong Inventor before: Tang Zhenpeng Inventor before: Zeng Weiling |
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Effective date of registration: 20171214 Address after: 529099 Pengjiang District, Jiangmen, Guangdong Province, construction No. two, No. 152 Applicant after: JIANGMEN POWER SUPPLY BUREAU, GUANGDONG POWER GRID CO., LTD. Address before: 529099 Pengjiang District, Jiangmen, Guangdong Province, construction No. two, No. 152 Applicant before: JIANGMEN POWER SUPPLY BUREAU, GUANGDONG POWER GRID CO., LTD. Applicant before: Wuhan Sunshine Power Science & Technology Co., Ltd. |
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