CN103475100B - System and method for alarming and controlling fault and overload of power distribution network in countryside - Google Patents
System and method for alarming and controlling fault and overload of power distribution network in countryside Download PDFInfo
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- CN103475100B CN103475100B CN201310426012.6A CN201310426012A CN103475100B CN 103475100 B CN103475100 B CN 103475100B CN 201310426012 A CN201310426012 A CN 201310426012A CN 103475100 B CN103475100 B CN 103475100B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 30
- 238000002271 resection Methods 0.000 claims description 6
- 230000003203 everyday effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
Classifications
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The invention discloses a method for alarming and controlling a fault and overload of a power distribution network in the countryside. An intelligent terminal is used for collecting phase currents on secondary sides of transformers in all power distribution areas, and a master control station is used for setting an overload current, overload time, a three phase unbalance rate, an overcurrent protection current value, overcurrent duration, a quick protection current value and quick protection duration. When the intelligent terminal detects that the phase currents on the secondary sides of the transformers exceed the set values and last the corresponding set time, or a three phase unbalance rate obtained by the intelligent terminal through computation is greater than the set three phase unbalance rate, the intelligent terminal sends a signal to the master control station, and the master control station conducts corresponding protective actions. By means of the method for alarming and controlling the fault and the overload of the power distribution network in the countryside, an overloaded loop can be tripped in turns and recovered automatically, all outgoing loops of faulty transformers can be cut off directly, and peak loads in the countryside can be guided and controlled effectively; moreover, the transformers are protected effectively, complaints of clients are reduced, investment is low, and the using effect is good.
Description
Technical field
The present invention relates to a kind of system and method realizing rural power grids overload alarm and control.
Background technology
Along with the change of rural economy situation and the raising of agriculture, rural areas and farmers need for electricity level, the contradiction that rural economy high speed development and Rural Power Grid Construction level relatively lag behind is day by day obvious, and the contradiction between electricity for rural use Continued and rural power grids power supply capacity deficiency is becoming increasingly acute.Rural power grids have the self-characteristic being different from urban distribution network, and the equipment annual underloading time is long, and Rate of average load is low, and peak amplitude is high, and peak value rises year by year; The change of three-phase imbalance rate is fast, and be not easy adjustment, manual measurement is wasted time and energy, and can not truly report situations again; Power load seasonal characteristic is obvious, greatly influenced by ambient temperature, particularly the Spring Festival and summer peak of power consumption power supply capacity not enough and voltage is low, customer complaint is many, as carried out invest in the transformation of real estate according to peak load value, scale of investment is large, will cause the long-time light running of equipment, loss is large, and current state's financial capacity cannot realize.
At present, market there are some load management Terminal Type equipment, but its function is confined to after the load current of user load end is continued above set point (setting value), just send alarm signal and the load of excision overload successively, its function singleness and need manual reversion power transmission, can not automatically recover, if be used in platform district, rural area, interruption duration is long will cause more complaint, effectively can not solve rural area Overload in short-term, and current load management Terminal Type equipment cannot be protected accordingly when transformer fault, that is cannot effectively protect when far field short circuit or near region short circuit occur power distribution network low-voltage circuit, transformer is easily damaged.
Summary of the invention
Technical problem to be solved by this invention is; a kind of method of alarm and control when Rural Power Distribution Network fault, overload be provided; the method is adopted to realize tripping operation in turn to overload loop and automatically to recover; all transmission line circuits of failure transformer are directly excised; can effectively guide rural area peak load and control, and available protecting transformer, reduce the complaint of client; invest little, result of use is good.
For solving the problems of the technologies described above, Rural Power Distribution Network fault provided by the invention, the method of alarm and control during overload, this Rural Power Distribution Network fault, the method of alarm and control during overload based on Rural Power Distribution Network fault, during overload, the system of alarm and control comprises the intelligent terminal that controlling center and several and controlling center communicate to connect, the control loop of each intelligent terminal is all connected with the power line of the earth leakage protective device on all transmission line circuits of corresponding power distribution station, controlling center and intelligent terminal are by GPRS/CDMA wireless connections, this Rural Power Distribution Network fault, during overload, the method for alarm and control comprises the following steps:
(1) the phase current I of each power distribution station Circuit Fault on Secondary Transformer, is automatically gathered by intelligent terminal
a, I
b, I
cand report to controlling center;
(2), by controlling center setting overload electric current I
1, overload duration T
1and be issued to each intelligent terminal, when intelligent terminal detects any phase current >I of Circuit Fault on Secondary Transformer
1, then judge electrical network overload and start timing, having served as load duration and arrived T
1time, intelligent terminal transmits a signal to controlling center, and controlling center sends overload alarm;
(3), by controlling center set three-phase current unbalance rate B% and be issued to each intelligent terminal, intelligent terminal is according to the phase current I collected
a, I
b, I
creal-time calculating three-phase current unbalance rate, when intelligent terminal calculates three-phase current unbalance rate >B%, intelligent terminal transmits a signal to controlling center, and controlling center sends three-phase imbalance alarm;
(4) overload strategy, by controlling center is issued to each intelligent terminal, namely by controlling center setting overload electric current I
2, overload T when continuing
2, excision load duration T be issued to each intelligent terminal, wherein I
2>I
1, T
2<T
1, when intelligent terminal detects any phase current >I of Circuit Fault on Secondary Transformer
2, then judge electrical network overload and start timing, having served as load duration and arrived T
2time, intelligent terminal excises the first transmission line circuit of corresponding transformer, automatically recovers after T time; If now intelligent terminal still detects any phase current >I of Circuit Fault on Secondary Transformer
2, then intelligent terminal excises the second transmission line circuit of corresponding transformer, automatically recovers after T time; By that analogy until all transmission line circuits of corresponding transformer are all excised and after recovering one by one, if now intelligent terminal still detects any phase current >I of Circuit Fault on Secondary Transformer
2, then intelligent terminal excises the first transmission line circuit of corresponding transformer and continues to operate as stated above;
(5), by controlling center setting overcurrent protection current value I
3, overcurrent duration T
3and be issued to each intelligent terminal, wherein I
3by escaping, maximum load current is adjusted, T
3< T
2, when intelligent terminal detects any phase current >I of corresponding Circuit Fault on Secondary Transformer
3, then judge that power distribution network low-voltage circuit far field short circuit occurs and starts timing, when far field duration of short circuit arrives T
3time, intelligent terminal is by all transmission line circuit complete resections of corresponding transformer;
(6), quick protective current value I is set by controlling center
4, protect duration T fast
4and be issued to each intelligent terminal, wherein I
4>I
2, T
4<T
3, when intelligent terminal detects any phase current >I of corresponding Circuit Fault on Secondary Transformer
4, then judge that power distribution network low-voltage circuit near region short circuit occurs and starts timing, when near region duration of short circuit arrives T
4time, intelligent terminal is by all transmission line circuit complete resections of corresponding transformer.
As improvement, when controlling center sends overload alarm and three-phase imbalance alarm, the note that controlling center sends customization simultaneously informs administrative staff.
As improvement, intelligent terminal also records every day, current limit monthly and overload duration respectively and reports to controlling center.
As improvement, the feature according to different seasons and rural power grids load sets different overload electric current I
1, I
2, I
3.
After adopting above method, the present invention compared with prior art, has following advantage:
Can the phase current of Real-Time Monitoring each power distribution station Circuit Fault on Secondary Transformer by controlling center, and pass through at controlling center setup control policy distribution to each intelligent terminal, when intelligent terminal detects that phase current exceedes different overload electric currents and the overload time of setting respectively, intelligent terminal can carry out sending overload alarm respectively, excise the different operatings such as the transmission line circuit of corresponding transformer in turn, when intelligent terminal detects transformer fault, namely when there is far field short circuit or near region short circuit in power distribution network low-voltage circuit, intelligent terminal directly can excise all transmission line circuits of corresponding transformer, achieve and tripping operation in turn and recovery are automatically realized to overload loop, all transmission line circuits of failure transformer are directly excised, and intelligent terminal can also be monitored three-phase imbalance rate, when monitoring after three-phase imbalance rate exceedes set point, three-phase imbalance alarm can be sent, can effectively guide rural area peak load by above method and control, reduce the complaint of client, invest little, result of use is good.
In addition, when controlling center sends overload alarm, the note that controlling center can send customization informs administrative staff, administrative staff can be pointed out to carry out peak load cutting to large power family, when controlling center sends three-phase imbalance alarm, also can give relevant unit-area management personnel by transmitting short message, prompting administrative staff adjust three-phrase burden balance immediately, by adjusting three-phrase burden balance in time, can effectively reduce overload number of times.
In addition, also record every day, current limit monthly and overload duration respectively by intelligent terminal and report to controlling center, electric power capacity-increasing transformation can be arranged to provide Data support for administrative staff.
In addition, different overload electric current I is set according to the feature of different seasons and rural power grids load
1, I
2, I
3, fully to excavate electrical overload potentiality.
Accompanying drawing explanation
The structured flowchart of the system of alarm and control when Fig. 1 is Rural Power Distribution Network fault of the present invention, overload;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
As shown in Figure 1, Rural Power Distribution Network fault of the present invention, during overload, the system of alarm and control comprises the intelligent terminal that controlling center and several and controlling center communicate to connect, and controlling center comprises information receiving device, messaging device, information transmitting apparatus, key-press input equipment, display device etc., the control loop of each intelligent terminal is all connected with the power line of the earth leakage protective device on all transmission line circuits of corresponding power distribution station, controlling center and intelligent terminal are by GPRS wireless connections, described earth leakage protective device is connected in series by earth leakage protective device and A.C. contactor and forms, described intelligent terminal comprises PLC control module and carries out the communication module of communication with controlling center, intelligent terminal and rural power grids intelligence distribution transformer terminals, it is to distribution transformer, line switch, RCD, the operation informations such as intelligent electric energy meter carry out gathering and user power utilization information carries out the equipment collected, complete distribution transformer metering summary table and monitor, RCD is monitored, status monitoring, load management, dynamic passive compensation/three-phase imbalance improvement/harmonic wave control, security protection, interactive management, asset management, the functions such as environmental monitoring and distributed power source access-in management.
Based on the system of alarm when above-mentioned Rural Power Distribution Network fault, overload and control, a kind of method of alarm and control when the invention provides Rural Power Distribution Network fault, overload, it comprises the following steps:
(1) the phase current I of each power distribution station Circuit Fault on Secondary Transformer, is automatically gathered by intelligent terminal
a, I
b, I
cand report to controlling center;
(2), by controlling center setting overload electric current I
1, overload duration T
1and be issued to each intelligent terminal, when intelligent terminal detects any phase current >I of Circuit Fault on Secondary Transformer
1, that is when intelligent terminal detects the phase current I of Circuit Fault on Secondary Transformer
aor I
bor I
c>I
1time, then judge electrical network overload and start timing, having served as load duration and arrived T
1time, intelligent terminal transmits a signal to controlling center, and controlling center sends overload alarm;
(3), by controlling center set three-phase current unbalance rate B% and be issued to each intelligent terminal, intelligent terminal is according to the phase current I collected
a, I
b, I
creal-time calculating three-phase current unbalance rate, the computing formula of three-phase current unbalance rate is as follows: a=(I
max-I
min)/(I
a+ I
b+ I
c)/3, wherein a is three-phase current unbalance rate, I
maxfor I
a, I
b, I
cin maximum, I
minfor I
a, I
b, I
cin minimum value, when intelligent terminal calculates three-phase current unbalance rate >B%, intelligent terminal transmits a signal to controlling center, and controlling center sends three-phase imbalance alarm;
(4), by controlling center issue overload strategy to each intelligent terminal, namely set overload electric current I
2, overload T when continuing
2, excision load duration T be issued to each intelligent terminal, wherein I
2>I
1, T
2<T
1, when intelligent terminal detects any phase current >I of Circuit Fault on Secondary Transformer
2, then judge electrical network overload and start timing, having served as load duration and arrived T
2time, intelligent terminal excises the first transmission line circuit of corresponding transformer, automatically recovers after T time, and that is after T time, intelligent terminal makes the first transmission line circuit of corresponding transformer restore electricity; If now intelligent terminal still detects any phase current >I of Circuit Fault on Secondary Transformer
2, then intelligent terminal excises the second transmission line circuit of corresponding transformer, automatically recovers after T time, and that is after T time, intelligent terminal makes the second transmission line circuit of corresponding transformer restore electricity; By that analogy until all transmission line circuits of corresponding transformer are all excised and after recovering one by one, if now intelligent terminal still detects any phase current >I of Circuit Fault on Secondary Transformer
2, then intelligent terminal excises the first transmission line circuit of corresponding transformer and continues to operate as stated above;
(5), by controlling center setting overcurrent protection current value I
3, overcurrent duration T
3and be issued to each intelligent terminal, wherein I
3by escaping, maximum load current is adjusted, T
3< T
2, when intelligent terminal detects any phase current >I of corresponding Circuit Fault on Secondary Transformer
3, then judge that power distribution network low-voltage circuit far field short circuit occurs and starts timing, when far field duration of short circuit arrives T
3time, intelligent terminal by all transmission line circuit complete resections of corresponding transformer, by above-mentioned control strategy, when power distribution network low-voltage circuit occur far field short circuit time, intelligent terminal excises all transmission line circuits of corresponding transformer, avoids controller switching equipment and transformer to burn because short circuit current is excessive;
(6), quick protective current value I is set by controlling center
4, protect duration T fast
4and be issued to each intelligent terminal, wherein I
4>I
2, T
4<T
3, when intelligent terminal detects any phase current >I of corresponding Circuit Fault on Secondary Transformer
4, then judge that power distribution network low-voltage circuit near region short circuit occurs and starts timing, when near region duration of short circuit arrives T
4time, intelligent terminal by all transmission line circuit complete resections of corresponding transformer, by above-mentioned control strategy, when power distribution network low-voltage circuit occur near region short circuit time, intelligent terminal can excise all transmission line circuits of corresponding transformer, avoids controller switching equipment and transformer to burn because short circuit current is excessive.
When controlling center sends overload alarm and three-phase imbalance alarm, the note that controlling center sends customization simultaneously informs administrative staff.
Intelligent terminal also records every day, current limit monthly and overload duration respectively and reports to controlling center.
Feature according to different seasons and rural power grids load sets different overload electric current I
1, I
2, I
3.
Below only apply preferably example with regard to the present invention and made explanation, but can not be interpreted as it is limitations on claims, structure of the present invention can have other to change, and is not limited to said structure.In a word, all various changes done in the protection range of independent claims of the present invention are all in protection scope of the present invention.
Claims (4)
1. a Rural Power Distribution Network fault, the method of alarm and control during overload, it is characterized in that, this Rural Power Distribution Network fault, the method of alarm and control during overload based on Rural Power Distribution Network fault, during overload, the system of alarm and control comprises the intelligent terminal that controlling center and several and controlling center communicate to connect, the control loop of each intelligent terminal is all connected with the power line of the earth leakage protective device on all transmission line circuits of corresponding power distribution station, controlling center and intelligent terminal are by GPRS/CDMA wireless connections, this Rural Power Distribution Network fault, during overload, the method for alarm and control comprises the following steps:
(1) the phase current I of each power distribution station Circuit Fault on Secondary Transformer, is automatically gathered by intelligent terminal
a, I
b, I
cand report to controlling center;
(2), by controlling center setting overload electric current I
1, overload duration T
1and be issued to each intelligent terminal, when intelligent terminal detects any phase current >I of Circuit Fault on Secondary Transformer
1, then judge electrical network overload and start timing, having served as load duration and arrived T
1time, intelligent terminal transmits a signal to controlling center, and controlling center sends overload alarm;
(3), by controlling center set three-phase current unbalance rate B% and be issued to each intelligent terminal, intelligent terminal is according to the phase current I collected
a, I
b, I
creal-time calculating three-phase current unbalance rate, when intelligent terminal calculates three-phase current unbalance rate >B%, intelligent terminal transmits a signal to controlling center, and controlling center sends three-phase imbalance alarm;
(4) overload strategy, by controlling center is issued to each intelligent terminal, namely by controlling center setting overload electric current I
2, overload T when continuing
2, excision load duration T be issued to each intelligent terminal, wherein I
2>I
1, T
2<T
1, when intelligent terminal detects any phase current >I of Circuit Fault on Secondary Transformer
2, then judge electrical network overload and start timing, having served as load duration and arrived T
2time, intelligent terminal excises the first transmission line circuit of corresponding transformer, automatically recovers after T time; If now intelligent terminal still detects any phase current >I of Circuit Fault on Secondary Transformer
2, then intelligent terminal excises the second transmission line circuit of corresponding transformer, automatically recovers after T time; By that analogy until all transmission line circuits of corresponding transformer are all excised and after recovering one by one, if now intelligent terminal still detects any phase current >I of Circuit Fault on Secondary Transformer
2, then intelligent terminal excises the first transmission line circuit of corresponding transformer and continues to operate as stated above;
(5), by controlling center setting overcurrent protection current value I
3, overcurrent duration T
3and be issued to each intelligent terminal, wherein I
3by escaping, maximum load current is adjusted, T
3< T
2, when intelligent terminal detects any phase current >I of corresponding Circuit Fault on Secondary Transformer
3, then judge that power distribution network low-voltage circuit far field short circuit occurs and starts timing, when far field duration of short circuit arrives T
3time, intelligent terminal is by all transmission line circuit complete resections of corresponding transformer;
(6), quick protective current value I is set by controlling center
4, protect duration T fast
4and be issued to each intelligent terminal, wherein I
4>I
2, T
4<T
3, when intelligent terminal detects any phase current >I of corresponding Circuit Fault on Secondary Transformer
4, then judge that power distribution network low-voltage circuit near region short circuit occurs and starts timing, when near region duration of short circuit arrives T
4time, intelligent terminal is by all transmission line circuit complete resections of corresponding transformer.
2. the method for alarm and control when Rural Power Distribution Network fault according to claim 1, overload, is characterized in that: when controlling center sends overload alarm and three-phase imbalance alarm, the note that controlling center sends customization simultaneously informs administrative staff.
3. the method for alarm and control when Rural Power Distribution Network fault according to claim 1, overload, is characterized in that: intelligent terminal also records every day, current limit monthly and overload duration respectively and reports to controlling center.
4. the method for alarm and control when Rural Power Distribution Network fault according to claim 1, overload, is characterized in that: the feature according to different seasons and rural power grids load sets different overload electric current I
1, I
2, I
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426012.6A CN103475100B (en) | 2013-09-18 | 2013-09-18 | System and method for alarming and controlling fault and overload of power distribution network in countryside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426012.6A CN103475100B (en) | 2013-09-18 | 2013-09-18 | System and method for alarming and controlling fault and overload of power distribution network in countryside |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103475100A CN103475100A (en) | 2013-12-25 |
| CN103475100B true CN103475100B (en) | 2015-05-06 |
Family
ID=49799841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310426012.6A Active CN103475100B (en) | 2013-09-18 | 2013-09-18 | System and method for alarming and controlling fault and overload of power distribution network in countryside |
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| CN (1) | CN103475100B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409943B (en) * | 2013-08-14 | 2016-03-09 | 杭州诺邦无纺股份有限公司 | The processing method of printing bonded fabric, printing bonded fabric and processing unit (plant) |
| CN104330701B (en) * | 2014-11-06 | 2017-05-24 | 扬州森源电气有限公司 | Single-phase fault monitoring wireless system for community and monitoring method thereof |
| CN106324316A (en) * | 2015-06-16 | 2017-01-11 | 巫继文 | Rural low voltage distribution transformer outgoing line end residual current online monitoring system |
| CN105375500A (en) * | 2015-11-25 | 2016-03-02 | 国家电网公司 | Three-phase unbalance monitoring and management system and method for distribution transformer |
| CN105656205A (en) * | 2016-02-22 | 2016-06-08 | 宁波三星医疗电气股份有限公司 | Control method based on leakage protection of rural power grid power distribution unit-area |
| CN106780138A (en) * | 2016-12-13 | 2017-05-31 | 国网北京市电力公司 | Distribution network failure method for early warning and device |
| CN108872728A (en) * | 2017-05-15 | 2018-11-23 | 韩国电气安全公社 | Utilize the trouble-shooter of the electrical equipment of intelligent socket |
| CN109560526A (en) * | 2018-09-19 | 2019-04-02 | 广东电网有限责任公司 | A kind of power distribution station outlet branch line switching current alarm device |
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|---|---|---|---|---|
| CN2847652Y (en) * | 2005-12-24 | 2006-12-13 | 秦万民 | Remote fault early warning terminal device for using electricity site |
| CN102035262A (en) * | 2011-01-12 | 2011-04-27 | 商河县供电公司 | Intelligent distribution network construction and management system in villages |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60190132A (en) * | 1984-03-08 | 1985-09-27 | オーテツク電子株式会社 | Substation facility automatically monitoring system |
-
2013
- 2013-09-18 CN CN201310426012.6A patent/CN103475100B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2847652Y (en) * | 2005-12-24 | 2006-12-13 | 秦万民 | Remote fault early warning terminal device for using electricity site |
| CN102035262A (en) * | 2011-01-12 | 2011-04-27 | 商河县供电公司 | Intelligent distribution network construction and management system in villages |
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| CN103475100A (en) | 2013-12-25 |
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Inventor after: He Tieguang Inventor after: Zhang Min Inventor after: Chen Jiangang Inventor after: Shu Xinyu Inventor after: Gong Jiaolong Inventor before: He Weiming Inventor before: He Tieguang Inventor before: Zhang Zhihui Inventor before: Zhang Min Inventor before: Chen Jiangang Inventor before: Shu Xinyu Inventor before: Gong Jiaolong Inventor before: Yuan Weijia Inventor before: Cheng Jieming |
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Free format text: CORRECT: INVENTOR; FROM: HE WEIMING HE TIEGUANG ZHANG ZHIHUI ZHANG MIN CHEN JIANGANG SHU XINYU GONGJIAOLONG YUAN WEIJIA CHENG JIEMING TO: HE TIEGUANG ZHANG MIN CHEN JIANGANG SHU XINYU GONG JIAOLONG |
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