CN1547306A - On-line monitoring system for transmission line fault - Google Patents
On-line monitoring system for transmission line fault Download PDFInfo
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- CN1547306A CN1547306A CNA2003101093293A CN200310109329A CN1547306A CN 1547306 A CN1547306 A CN 1547306A CN A2003101093293 A CNA2003101093293 A CN A2003101093293A CN 200310109329 A CN200310109329 A CN 200310109329A CN 1547306 A CN1547306 A CN 1547306A
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Abstract
The invention is a kind online supervising system for electricity cable failure, which is mainly used in the failure detection of the cable in electric system. It includes a data collecting end and failure monitoring and maintaining system. The data collecting ends is set on the pole for setting the electric cables. The data collected by the collecting end is transmitted to the primary control station of the supervising supporting system with message type through the mobile communication network. The primary control station receives the message and completes the alarming, display and system diagnosis, maintenance, query and data transmitting, and printing and son on. The detecting speed is quick, the localization is accurate and reliable, the operation is convenient.
Description
Technical field
The present invention relates to a kind of transmission line malfunction on-line monitoring system, mainly be applicable to the fault detect of transmission line in the electric power system.
Background technology
Transmission line is the lifeblood of electric power system, and it is undertaking the important task that transmits electric energy.Expansion day by day along with the electric power system scale, high voltage, macro-energy, long-distance transmission line increasing, in case transmission line breaks down, influence to safe operation, industrial and agricultural production and people's daily life of electric power system is also more and more big, therefore, the safe operation of guaranteeing transmission line is very important.
High pressure on the electrical network and extra high voltage network are very long, and what have reaches the hundreds of kilometer, in addition have reach thousands of kilometers.The region of its distribution is wide again.Insulator on the transmission line is exposed in the atmosphere for a long time, be subjected to the influence of weather and environmental condition, can be under the effect of extraneous factor (as at thunderbolt, mist, rain, filth etc.) flashover takes place, cause the generation of transmission line malfunction, these are unavoidable problem in the operation of power networks.
After transmission line breaks down, how to search the fault point fast, eliminate power supply recovered from failure, this is the big problem that operation of power networks is paid close attention to by people so far always.
Traditional is to rely on line walking to search the fault point, then fault is handled.This mode had been not only time-consuming, but also effort, and was difficult to guarantee electric power system and transmission line safe and stable operation, and people solve the problems referred to above seeking a more effective mode for this reason.
The existing fault localization method has several: impedance method, accident analysis method (power frequency parametric method), traveling wave method etc., though research and development through decades, the precision of fault locator improves a lot, but all there is a common problem: the physical quantity when promptly measuring transmission line parameter and fault, position by calculating, and measurement always has error, and therefore the result of location just has error, and this error tends to make line walking not have the result in the practice.
Summary of the invention
The present invention be for to the fault of power system transmission line fast, accurately, reliably inerrably detect and locate, a kind of transmission line malfunction on-line monitoring system is provided.
Transmission line malfunction on-line monitoring system of the present invention mainly comprises two major parts.
First is a data collection station, mainly comprises: the data terminal electric power system of fault measuring unit, data acquisition control unit, wireless transmission linkage unit and solar energy;
Second portion malfunction monitoring back-up system mainly comprises: the master station that has the communication network dome module, distributed-network monitoring platform, fault alarm inquiry system and the user's maintenance system that connect with mobile communications network.
Fault measuring unit in the said data collection station mainly comprises: fault current detecting sensor and signal latch.
The course of work that transmission line malfunction of the present invention detects is: at first the data collection station in the monitoring system of the present invention is placed on the shaft tower that erects power transmission lines.When transmission line normally moved, without any electric current, the fault current detecting sensor output signal in its fault measuring unit was zero or approaching zero on the shaft tower.In case break down, as: insulator generation flashover on the shaft tower, hit transmission line or shaft tower, fault current can flow to the earth through shaft tower, the fault current detecting sensor can detect the fault current that flows through shaft tower, (current value of considering thunder-strike current is big through signal latch, time is short again, and signalization latch) the maximum fault current value is latched after, deliver to the wireless transmission linkage unit through the data collection station collection, send transmission line malfunction association message information by mobile communications network with note at once.Message reaches the malfunction monitoring back-up system by mobile communications network.Finish the reception and the transmission of information by the master station of malfunction monitoring back-up system.And by warning, demonstration, system diagnostics, maintenance, inquiry, data that the master station of malfunction monitoring back-up system is finished transmission line malfunction monitoring pass on, the needed a series of data of user such as printing.
The significant advantage of monitoring system of the present invention is:
Utilize mobile communications network to carry out message transmission up and down with note between data collection station and the master station, information uploading can be finished about about 20 seconds.Therefore, in case transmission line breaks down, the master station of malfunction monitoring back-up system of the present invention just can be told transmission line malfunction the operation and the relevant personnel in time, exactly in less than 30 seconds time.Thereby alleviated the burden that line walking workman patrolman does greatly, both can save great amount of manpower and material resources, accelerated the location of failure point of power transmission line, can organize manpower fast again, rushed to repair, restored electricity as early as possible, breakdown loss is minimized.In addition, whether the size of institute's record trouble electric current when transmission line breaks down can help operation and maintainer's analytical equipment to be hit and damage behind the rush of current, when overhauls, and these can improve the security reliability that transmission line moves.Therefore, transmission line malfunction on-line monitoring system of the present invention not only has a very important role to the safe and reliable power supply of electric power system, but also can bring huge social and economic benefit to electric power system.
Monitoring system major technique characteristics of the present invention are:
Transmission line malfunction detection technique (big electric current, fast signal latch);
The power pack of data collection station (under the no condition of power supply);
The fault data of data collection station collection in time is uploaded to master station (utilizing GSM (global network mobile system) wireless network) fast;
The security reliability of data collection station computer hardware (adapting to outdoor application);
The master station of malfunction monitoring back-up system is used operation control management system (system configuration, configuration, operational management, maintenance etc.).
1) adopt in the fault measuring of the present invention unit big electric current (electric current be 0～10KA) at a high speed (response speed reaches 2.6 μ s) sampling sensor and have the fast signal latch as the fault current detecting sensor.
Generally, the sampling period of power frequency fault current is a 3-6 cycle (50HZ), and the time of thunder-strike current is very short, generally has only about 2.6 μ S, and this just requires the fault current detecting sensor to have fast reaction, the function of fast recording.So the present invention adopts has signal latch and big electric current high-speed sampling transducer can reach this requirement.
2) electric power system of data collection station of the present invention is that employing is solar powered, and collection and wireless transmit/receive units are little power consumptions, because circuit such as collection and wireless receiving and dispatching are mounted in the open air, under 500KV transmission line or shaft tower, can not find power supply, this just requires a power supply one's very own to finish the electric power system of collection and data transmit-receive, and the power consumption of electricity consumption part is the smaller the better.The operating current of data collection station of the present invention even can be controlled in below the 1mA about 10mA.The present invention uses solar powered can the operation out of doors over a long time (all the time according to more than the week).
3) with the connecting of mobile communications network, the note exchange fast, reliable.
Getting in touch between data collection station of the present invention and the master station is to pass through mobile communications network.Network coverage face is big, and the blind area is less.Because under the situation long at transmission line, that the base station is many, bulk information can cause information dropout for a short time because of buffering area when transmitting.So the present invention adopts master station and the direct coupled mode of mobile communications network, can overcome the problem in the above-mentioned technology formerly, accomplishes transceive data quickly and accurately.
4) master station of malfunction monitoring back-up system of the present invention provides good user's operation, use interface, can help the user to finish system configuration, alarm information processing, data query, rigging up and debugging, system maintenance etc.
5) master station of the present invention has been developed a cover complete device communication protocol (under the GSM mode), through practicing, has proved that communication protocol can the operation of safety and precise ground.
Description of drawings
Fig. 1 is that monitoring system of the present invention is installed schematic diagram in actual applications.
Fig. 2 is the structural representation that monitoring system two large divisions of the present invention constitutes.
Fig. 3 is the structural representation of data collection station in the monitoring system of the present invention.
Fig. 4 is the connection schematic diagram of data collection station running of the present invention.
Fig. 5 is the application interface schematic diagram of master station in the monitoring system of the present invention.
Fig. 6 is an application interface schematic diagram of using monitoring system user side of the present invention.
Embodiment
Further specify the structure of monitoring system of the present invention below in conjunction with accompanying drawing.
Fig. 1 is that Application of Monitoring System of the present invention is to on-the-spot on the spot schematic diagram.As shown in fig. 1, the data collection station 2 in the monitoring system of the present invention places on the shaft tower 1 that erects power transmission lines, and the master station 5 of malfunction monitoring back-up system places the situation of the data collection station 2 on the shaft tower 1 by mobile communications network 3 monitorings.Master station 5 is informed user side 4 by mobile communications network 3 to send way of short messages again.When transmission line normally moved, without any electric current, data sampling terminal 2 only detected terminal equipment by designing requirement on the shaft tower 1, and by the time value reporting equipment self check situation message information of setting.In case break down, the fault current detecting sensor can detect the fault current that flows through on the shaft tower 1, sends the message information of transmission line malfunction by mobile communications network with way of short messages, delivers to master station 5.By master station 5 finish information reception, handle and be sent to user side 4.Constitute the monitoring system of transmission line malfunction Rapid Alarm thus.
The feature that just more is clear that monitoring system structure of the present invention shown in Figure 2.Monitoring system of the present invention comprises the two large divisions: data collection station 2 and malfunction monitoring back-up system.Place the data collection station 2 on the shaft tower 1 to comprise.Fault detection unit 201, data acquisition control unit 202 and wireless transmission linkage unit 203, wherein wireless transmission linkage unit 203 connects with mobile communications network 3.Communication network dome module 501 on the master station 5 of malfunction monitoring back-up system connects with mobile communications network.Therefore, when transmission line normally moved, without any electric current, the fault current detecting sensor output signal in the fault detection unit 201 was zero or approaching zero on the shaft tower 1.In case break down, as; Insulator generation flashover on the shaft tower 1, hit circuit or shaft tower, fault current can flow to the earth through shaft tower 1, the fault detect current sensor can detect the fault current that flows through on the shaft tower 1, signal latch latchs the back with the maximum fault current value (can be at short notice, store five fault messages continuously) deliver to the wireless transmission linkage unit through the collection of data acquisition control unit, send line fault association message information by mobile communications network with way of short messages at once.And message deposited the personal data storehouse by user's features such as SPID, initiatively remove to read message information, and finish associative operations such as warning, data record on request by the master station 5 of malfunction monitoring back-up system through mobile communications network.
Shown in Figure 3 is the concrete structure of the data collection station 2 of monitoring system of the present invention.Data collection station 2 mainly comprises: fault measuring unit 201, the data acquisition control unit 202 that links to each other with fault measuring unit 201 outputs, the wireless transmission linkage unit 203 that links to each other with data acquisition control unit 202 outputs.The data terminal electric power system 204 that comprises the solar energy of solar cell 2041, solar charging controller 2042 and batteries 2043 in addition.
Said data acquisition control unit 202 contains data acquisition module 2021 (AD-10) and controller (CPU) 2022.
Said wireless transmission linkage unit 203 comprises radio receiving transmitting module 2031 and wave point 2032.Use the RS485/232 interface in the present embodiment.
Structure as Fig. 3; when transmission line malfunction takes place; the fault current of shaft tower of flowing through makes the fault current detecting sensor in the fault measuring unit 201 produce output signal; deliver to data acquisition control unit 202 through protection with after latching; data acquisition control unit 202 is finished relevant data via controller (CPU) 2022 control data and is debated after the reason of other places again through wave point 2032 (RS-232/RS-485 interface) and radio receiving transmitting module 2031 as employing GSM-MODEM module after finishing the A/D data transaction, send transmission line malfunction association message information by mobile communication network with short message mode.
Wave point 2032 that said wireless transmission linkage unit 203 comprises and radio receiving transmitting module 2031 in data collection station, be mainly used in mobile communications network 3 connect the transmitting-receiving processing of note etc.The function of point-to-point communication can also be increased, the data routing issue of the not yet covered with networks area data acquisition terminal of global network mobile system (GSM) can be solved.The GSM-MODEM module adopts the technical grade chip, and communication manages to data by CPU in the terminal.
Controller (CPU) 2022 is selected strong, the low-power consumption technical grade chip of antijamming capability for use.The main functions such as internal control, data acquisition, fault data storage and scheduling that realize.And have the fault self-recovering function, improve the antijamming capability and the reliability of data collection station greatly.Data collection station have internal clocking and to the time function, all have time tag in the data information transfer process, these can remedy the data delay of SMS communication process.
Said data terminal electric power system 204 is a solar cell system, and it contains solar cell 2041, solar charging controller 2042 and batteries 2,043 three parts.Because open-air nothing power supply environment, data collection station can not have a power failure again.Therefore, adopt solar energy and batteries that the additional energy is provided.Under sunshine good situation, the energy that obtains after solar cell 2041 daylightings through solar charging controller 2042 to batteries 2043 chargings, to guarantee the power-supply system operate as normal.In addition, system also is responsible for the voltage of batteries is carried out sampling monitoring, and can transmit the supply voltage relevant information to master station at any time, prevents to influence because of dead electricity the operate as normal of data collection station.
The running that shown in Figure 4 is data collection station 2 is concrete and the concrete structure of fault measuring unit 201.Said fault measuring unit 201 mainly comprises fault current detecting sensor 2011, and the overvoltage crowbar 2012 that is connected with fault current detecting sensor 2011 outputs, the signal latch 2013 that links to each other with overvoltage crowbar 2012 outputs are differentiated and output circuit 2014 with the signal that links to each other with the signal latch output.Data acquisition control unit 202 links to each other with signal latch 2013, signal discriminating and output circuit 2014 and radio receiving transmitting module 2031.By solar charging controller 2042 and batteries 2043 power supplies.
Said signal latch 2013 contains the fault category judge module.Can discern lightning fault electric current and power frequency fault current.
As above-mentioned, when transmission line normally moved, without any electric current, fault current detecting sensor 2011 output signals were zero or approaching zero on the shaft tower 1.In case break down, fault current can flow to the earth through shaft tower 1, and fault current detecting sensor 2011 can detect the fault current that flows through shaft tower 1.Fault current detecting sensor 2011 output signals are differentiated and output circuit 2014 exports data acquisition control unit 202 to by signal after the protection of overvoltage crowbar 2012 and signal latch 2013 and latching.Data acquisition control unit 202 is sent by wave point 2032 and radio receiving transmitting module 2031 after finishing the conversion of data.At once send line fault association message information by mobile communications network with note.Message transmits through mobile communications network, by the master station 5 of malfunction monitoring back-up system finish the reading of malfunction monitoring data, report to the police, the needed data of user such as demonstration, system diagnostics, maintenance, inquiry, data transmission, printing.
Fig. 5 is a monitoring system of the present invention when specifically implementing, the observation interface schematic diagram in the master station 5 of fault detect back-up system.
Said master station 5 mainly comprises: the communication network dome module 501 that connects with mobile communications network, distributed-network monitoring platform, fault alarm inquiry system and user's maintenance system.
The said communication network dome module 501 that connects with mobile communications network contains the short message receiving-transmitting processing module.So the master station of malfunction monitoring back-up system of the present invention can promptly receive the message information that is sent with short message mode by mobile communications network by data collection station.
Said distributed-network monitoring platform is on the platform of computer operating system, the real time operating system of foundation, the data base set user's application system of unifying.
Said fault alarm inquiry system contains fault message processing module and fault current threshold settings module.Fault alarm inquiry system of the present invention can inquire about the moon on every transmission line or season or year the shaft tower number etc. of the number of stoppages, classification, lowest high-current value fault point.For transmission line distribution design etc. provides the data of analyzing, and can search fault message quickly and accurately.As Fig. 5 is the rack figure of Application of Monitoring System of the present invention in an area (Chinese East China).Comprising monitored concrete circuit, in case line failure, faulty line can glimmer on rack, has alarm sound output and information indicating simultaneously.The user can be according to prompting, understands the shaft tower number of line fault rapidly, thunder-strike current that the fault current detecting sensor is upsampled to during line fault or power current value.
Said user's maintenance system contains monitoring system operation maintenance module.User's maintenance system of the present invention can be provided with and manage every data collection station.To the data acquisition terminal alignment time (with master station to the time), and with the mobile communications network alignment time.But the operating voltage of system's monitoring data acquisition terminal, touring its operating state of detection and cooperation Field Force debug the data acquisition terminal.Fig. 6 is the maintenance interface of user side 4.Can be configured the data terminal by this interface, can be separately, partly or entirely the data collection station on the transmission line is configured, also can be separately, part carries out data uplink to the data collection station on the transmission line and transmit.By it, can understand the working condition of armamentarium on the transmission line, utilize this application interface can realize operation and management to armamentarium.
Claims (10)
1, a kind of transmission line malfunction on-line monitoring system, mainly comprise data collection station and malfunction monitoring back-up system two major parts, it is characterized in that said data collection station mainly comprises the fault measuring unit that has fault current detecting sensor and signal latch, the data acquisition control unit, the data terminal electric power system of wireless transmission linkage unit and solar energy; Said malfunction monitoring back-up system mainly comprises and has the communication network dome module that connects with mobile communications network, distributed-network monitoring platform, the master station of fault alarm inquiry system and user's maintenance system.
2, transmission line malfunction on-line monitoring system according to claim 1; it is characterized in that the fault measuring unit in the said data collection station mainly comprises the fault current detecting sensor; the overvoltage crowbar that is connected with fault current detecting sensor output, the signal latch that links to each other with the overvoltage crowbar output is differentiated and output circuit with the signal that links to each other with the signal latch output.
3, transmission line malfunction on-line monitoring system according to claim 1 and 2 is characterized in that said signal latch contains the fault category judge module.
4, transmission line malfunction on-line monitoring system according to claim 1 is characterized in that the data acquisition control unit in the said data collection station contains data acquisition module and controller.
5, transmission line malfunction on-line monitoring system according to claim 1 is characterized in that the wireless transmission linkage unit (203) in the said data collection station comprises radio receiving transmitting module (2031) and wave point (2032).
6, transmission line malfunction on-line monitoring system according to claim 1 is characterized in that the data terminal electric power system of the solar energy in the said data collection station contains solar cell, solar charging controller and storage source group.
7, transmission line malfunction on-line monitoring system according to claim 1 is characterized in that the communication network dome module that the master station in the said malfunction monitoring back-up system has contains the short message receiving-transmitting processing module.
8, transmission line malfunction on-line monitoring system according to claim 1, it is characterized in that the distributed-network monitoring platform in the master station in the said malfunction monitoring back-up system is under the environment of computer operating system, the real time operating system of foundation, the data base set user's application system of unifying.
9, transmission line malfunction on-line monitoring system according to claim 1 is characterized in that master station internal fault warning inquiry system contains fault message processing module and fault current threshold settings module in the said malfunction monitoring back-up system.
10, transmission line malfunction on-line monitoring system according to claim 1 is characterized in that containing monitoring system operation maintenance module in the user's maintenance system in the master station in the said malfunction monitoring back-up system.
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| CNA2003101093293A CN1547306A (en) | 2003-12-12 | 2003-12-12 | On-line monitoring system for transmission line fault |
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| CNA2003101093293A CN1547306A (en) | 2003-12-12 | 2003-12-12 | On-line monitoring system for transmission line fault |
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| WO2007041967A1 (en) * | 2005-10-14 | 2007-04-19 | Huawei Technologies Co., Ltd. | An access device and a management system and method thereof |
| CN101236232B (en) * | 2007-01-30 | 2010-12-29 | 唐翊程 | Method for looking for power line damaged porcelain bottle |
| CN101567581B (en) * | 2008-04-22 | 2011-11-16 | 上海纳杰电气成套有限公司 | Universal intelligent low-voltage monitoring system |
| CN102750810A (en) * | 2011-04-22 | 2012-10-24 | 上海市电力公司 | Communication terminal of ground fault automatic positioning device for transmission line |
| CN102750799A (en) * | 2012-06-18 | 2012-10-24 | 中国南方电网有限责任公司超高压输电公司 | Ion spatial electric current density-based direct current transmission line mountain fire monitoring device |
| CN102914725A (en) * | 2012-07-20 | 2013-02-06 | 王道龙 | Medium-voltage power distribution network fault monitoring device |
| CN103105521A (en) * | 2013-01-29 | 2013-05-15 | 华北电力大学 | Very fast transient overvoltage (VFTO) remote measurement system and method |
| CN103217616A (en) * | 2013-03-29 | 2013-07-24 | 江苏省电力公司张家港市供电公司 | Intelligent wiring instrument |
| CN103278709A (en) * | 2013-04-27 | 2013-09-04 | 国家电网公司 | System for testing property of thunder and lightning traveling wave of power transmission line |
| CN103323746A (en) * | 2013-06-22 | 2013-09-25 | 山西省电力公司太原供电分公司 | On-line monitoring system for positioning failure of network distribution overhead line |
| CN101278473B (en) * | 2005-09-02 | 2014-12-31 | 西门子工业公司 | Method for monitoring power delivery system, and method for operating or monitoring power units |
| CN106300661A (en) * | 2016-08-24 | 2017-01-04 | 安徽森度科技有限公司 | Power transformation is sent to transport check system |
| CN108896867A (en) * | 2018-06-15 | 2018-11-27 | 云南电网有限责任公司曲靖供电局 | A kind of quick monitor and alarm system of transmission line malfunction |
| CN109040282A (en) * | 2018-08-23 | 2018-12-18 | 吾达软件（武汉）股份有限公司 | A kind of remote interaction control system based on wireless network |
| CN109375073A (en) * | 2018-11-15 | 2019-02-22 | 国网浙江省电力有限公司绍兴供电公司 | Anti-thunder insulator action current and fault current capture and identification module |
| CN111007361A (en) * | 2019-12-27 | 2020-04-14 | 广东电网有限责任公司电力科学研究院 | Power transmission line fault positioning method, system and equipment |
| CN113125897A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Memory, overhead line single-phase earth fault detection method, system and equipment |
| US11901861B2 (en) | 2018-10-17 | 2024-02-13 | Solaredge Technologies Ltd. | Photovoltaic system failure and alerting |
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| CN101278473B (en) * | 2005-09-02 | 2014-12-31 | 西门子工业公司 | Method for monitoring power delivery system, and method for operating or monitoring power units |
| WO2007041967A1 (en) * | 2005-10-14 | 2007-04-19 | Huawei Technologies Co., Ltd. | An access device and a management system and method thereof |
| CN101236232B (en) * | 2007-01-30 | 2010-12-29 | 唐翊程 | Method for looking for power line damaged porcelain bottle |
| CN101567581B (en) * | 2008-04-22 | 2011-11-16 | 上海纳杰电气成套有限公司 | Universal intelligent low-voltage monitoring system |
| CN102750810A (en) * | 2011-04-22 | 2012-10-24 | 上海市电力公司 | Communication terminal of ground fault automatic positioning device for transmission line |
| CN102750799A (en) * | 2012-06-18 | 2012-10-24 | 中国南方电网有限责任公司超高压输电公司 | Ion spatial electric current density-based direct current transmission line mountain fire monitoring device |
| CN102914725A (en) * | 2012-07-20 | 2013-02-06 | 王道龙 | Medium-voltage power distribution network fault monitoring device |
| CN102914725B (en) * | 2012-07-20 | 2015-06-24 | 王道龙 | Medium-voltage power distribution network fault monitoring device |
| CN103105521A (en) * | 2013-01-29 | 2013-05-15 | 华北电力大学 | Very fast transient overvoltage (VFTO) remote measurement system and method |
| CN103217616A (en) * | 2013-03-29 | 2013-07-24 | 江苏省电力公司张家港市供电公司 | Intelligent wiring instrument |
| CN103217616B (en) * | 2013-03-29 | 2015-07-01 | 江苏省电力公司张家港市供电公司 | Intelligent wiring instrument |
| CN103278709B (en) * | 2013-04-27 | 2015-09-02 | 国家电网公司 | A kind of lightning travelling wave in transmission line characteristic test system |
| CN103278709A (en) * | 2013-04-27 | 2013-09-04 | 国家电网公司 | System for testing property of thunder and lightning traveling wave of power transmission line |
| CN103323746A (en) * | 2013-06-22 | 2013-09-25 | 山西省电力公司太原供电分公司 | On-line monitoring system for positioning failure of network distribution overhead line |
| CN103323746B (en) * | 2013-06-22 | 2015-09-30 | 山西省电力公司太原供电分公司 | Distribution network overhead line localization of fault on-line monitoring system |
| CN106300661A (en) * | 2016-08-24 | 2017-01-04 | 安徽森度科技有限公司 | Power transformation is sent to transport check system |
| CN108896867A (en) * | 2018-06-15 | 2018-11-27 | 云南电网有限责任公司曲靖供电局 | A kind of quick monitor and alarm system of transmission line malfunction |
| CN109040282A (en) * | 2018-08-23 | 2018-12-18 | 吾达软件（武汉）股份有限公司 | A kind of remote interaction control system based on wireless network |
| US11901861B2 (en) | 2018-10-17 | 2024-02-13 | Solaredge Technologies Ltd. | Photovoltaic system failure and alerting |
| CN109375073A (en) * | 2018-11-15 | 2019-02-22 | 国网浙江省电力有限公司绍兴供电公司 | Anti-thunder insulator action current and fault current capture and identification module |
| CN111007361A (en) * | 2019-12-27 | 2020-04-14 | 广东电网有限责任公司电力科学研究院 | Power transmission line fault positioning method, system and equipment |
| CN113125897A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Memory, overhead line single-phase earth fault detection method, system and equipment |
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