CN1753269A - Stationary reactive compensation monitoring platform with layered distribution type structure - Google Patents
Stationary reactive compensation monitoring platform with layered distribution type structure Download PDFInfo
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- CN1753269A CN1753269A CNA2005101026599A CN200510102659A CN1753269A CN 1753269 A CN1753269 A CN 1753269A CN A2005101026599 A CNA2005101026599 A CN A2005101026599A CN 200510102659 A CN200510102659 A CN 200510102659A CN 1753269 A CN1753269 A CN 1753269A
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- 238000012544 monitoring process Methods 0.000 title claims description 59
- 238000004891 communication Methods 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 230000003068 static effect Effects 0.000 claims description 12
- 230000005622 photoelectricity Effects 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 210000000635 valve cell Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- 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
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- 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
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- 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
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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Abstract
This invention provides a laminated SVC monitor platform including a bottom layer, a middle layer and a top layer, among which, a communication manager, a SVC branch microcomputer protection unit, an auxiliary protection unit, a water-cooling system monitor and a VBE are set at the bottom of the monitor platform and are connected with the middle layer via RS232 and RS485 serial interfaces and realize the bottom distribution communication in series, the middle layer includes a site control, a station control, an adjusting unit and a master monitor unit, which are connected with each other via the CAN and realize the middle layer communication in the point to point way, the top of the monitor platform is the upper level automatic system communicating with the middle layer in terms of CDT.
Description
Technical field
The present invention relates to a kind of Static Var Compensator (SVC) monitor supervision platform of layered distribution type structure.
Background technology
Stationary reactive compensation monitoring platform is the hardware and software basis of SVC control system, is the general designation of SVC control system structure, and the reliability service of SVC device is played decisive role.And wherein used fieldbus (Field Bus) is a kind of advanced person's of the rise nineties an industrial measurement and control technology, be the market product that intelligent and totally digitilized TT﹠C system requirement drives to field instrument, it brings the notion of communication network and management into the industrial measurement and control field.In essence, it is a kind of digital communication agreement, be digital, the transmitted in both directions that connects smart devices and automated system, disperse entirely, the communication network of multiple-branching construction, be observation and control technology, measurement instrument industry technology and computer networking technology three's combination, represented the direction of industrial measurement and control structural development from now on.Using at present more general fieldbus has CAN, LONWORKS, FF, PROFIBUS, DUPLINE, HART etc., and the CAN fieldbus is introduced China early, constitutes simple and reliablely with its system, uses ripe and has obtained using widely.The SVC monitor supervision platform often adopts single cpu model that whole system is monitored in the past, and promptly supervisory control system is calculated, detected and protect all analog signals, switching signal in the system in the mode of cyclic query by a high-speed CPU, realizes centralized control.Single cpu monitor mode configuration complexity, operational efficiency are low, poor reliability, information transmit few, man-machine interface is unfriendly, and layered distribution type SVC monitor supervision platform has been broken through this monitoring mode, adopt the mode of fieldbus that many cpu monitors subelement is interconnected in the SVC supervisory control system, realize many cpu monitors pattern.
Summary of the invention
A kind of layered distribution type structure SVC monitor supervision platform provided by the invention comprises higher level's automated system, communication manager, SVC branch road Microcomputer Protection unit, the control of controlling on the spot, stand, regulon, main monitoring unit, auxiliary protection unit, water-cooling system monitoring, valve base electronic device (VBE).Wherein, communication manager, SVC branch road Microcomputer Protection unit, auxiliary protection unit, water-cooling system monitoring, valve base electronic device (VBE) are in the bottom of monitor supervision platform; respectively the filter that is distributed in the different location and TCR branch road, water-cooling system, thyristor valve group are protected and monitored, they are connected with the monitor supervision platform middle level by RS232, RS485 serial line interface carries out communication.The monitor supervision platform middle level comprises on the spot control, stand control, regulon, main monitoring unit, and they interconnect by serial communication bus CAN, realizes information sharing.The upper strata of monitor supervision platform is higher level's automated system, and it carries out communication according to the middle level of CDT communication protocol and monitor supervision platform, realizes control and detection to the SVC supervisory control system, and can realize the operation and the demonstration of terminal unit.
Owing to adopted above-mentioned technical scheme, the beneficial effect that the present invention has is: many CPU co-ordination, improve the speed of service greatly; Communication is flexible, transinformation content is big, and the control point is many; Supervisory control system running is reliable, and antijamming capability is strong; Platform structure is open, flexible, is easy to increase and decrease monitor node and monitoring parameter, also is easy to be transplanted on other supervisory control system of non-SVC.
Description of drawings
Fig. 1 is the composition frame chart of SVC supervisory control system;
Fig. 2 is the hierarchical chart of SVC supervisory control system;
Fig. 3 is the unit cascaded winding diagram of SVC supervisory control system;
Fig. 4 is the electric hookup of SVC supervisory control system;
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Referring to Fig. 1; the SVC supervisory control system has adopted layered distribution type structure, comprises higher level's automated system, communication manager, SVC branch road Microcomputer Protection unit, the control of controlling on the spot, stand, regulon, main monitoring unit, auxiliary protection unit, water-cooling system monitoring, valve base electronic device (VBE) etc.Divide from level, the SVC supervisory control system comprises bottom, three levels in middle level and upper strata, as Fig. 2.
The bottom of monitor supervision platform comprises communication manager, SVC branch road Microcomputer Protection unit, auxiliary protection unit, water-cooling system monitoring, valve base electronic device (VBE), respectively the filter that is distributed in the different location and TCR branch road, water-cooling system, thyristor valve group is protected and is monitored.Wherein, valve base electronic device (VBE) by the RS485 bus adopt one main many from, host query and the communication modes of replying.Monitoring unit adopts master mode and the communication of six valve detecting units.The valve fault-signal of six valve detecting units of monitoring unit cyclic query, BOD actuating signal and PT disconnection signal, and the status signal of valve is inquired about in timing.Send abort light to monitoring unit by the IO mouth to monitoring unit when detecting bad number of valve greater than set point as the valve detecting unit.When monitoring unit is received this signal this element communication priority rank is put height, to this unit inquiry valve fault-signal.By cyclic query, status poll, urgent inquiry, and the processing mode that combines of IO mouth, the protection of valve cell has been accomplished in time, reliably.Monitoring unit is gathered each switching value state at any time by the switching value input, and SVC branch road Microcomputer Protection unit, auxiliary protection unit, water-cooling system monitoring unit are monitored, and reports by the CAN bus, and makes corresponding protection action according to protection level separately.The CAN bus adopts many master modes, on the bus arbitrary equipment all can be with miscellaneous equipment on the bus point-to-point or broadcast communication.Monitoring unit adopts the broadcast mode communication, at any time the fault data of broadcast transmission monitoring unit acquisition process, status data and command execution results and receive the Work in Place station and the control command of remote operation platform and contact order.Monitoring unit regularly sends the contact order to miscellaneous equipment on the bus, does not contact a certain equipment as overtime, then can make corresponding protection.
The monitor supervision platform middle level comprises on the spot control, stand control, regulon, main monitoring unit, and they interconnect by serial communication bus CAN, realizes information sharing.Wherein, regulating arithmetic element is that CPU calculates fast to the Static Var Compensator trigger angle with TMS320C32DSP, and issues photoelectricity detection trigger unit (VBE) with the form of 6 phase electric pulses.Main monitoring unit, regulon, Control work station and station control operating desk are then realized the high-speed figure passage of on-the-spot one-level by the CAN fieldbus on the spot.Then interconnected by the communication manager realization to higher level's automated system, communication manager has been taken on the function of bridge and stipulations conversion.
The upper strata of monitor supervision platform is higher level's automated system, it carries out communication according to the middle level of CDT communication protocol and monitor supervision platform, realization is to the control and the detection of SVC supervisory control system, and can realize the operation and the demonstration of terminal unit, and a plurality of different subsystems organically are tied.
This point-to-point mode with CAN realizes the middle level communication, the network configuration that realizes bottom distribution communication with RS232, RS485 serial mode has constituted SVC layered distribution type monitor supervision platform, adopt this structural system framework clear, each layer isolated mutually, simplified system design greatly increases system reliability and extensibility.Control work station and station control operating desk provide friendly man machine operation interface on the spot, provide the most effective and information intuitively by graphic interface to the user.Regulon adopts high-speed dsp for handling core, is aided with the high-speed data acquisition passage, can realize real-time controlled quentity controlled variable calculating, arrives optimal control results.System's valve base electronic section (VBE) is realized triggering logical conversion and the supervision to the TCR valve, can realize multiple triggering modes such as photoelectricity triggering, electromagnetism triggering.
The SVC supervisory control system is made up of a plurality of processing units, and the structure composition mode by layer-stepping realizes collection and the monitoring to a plurality of monitoring parameters.Internal system has improved system reliability and flexibility by the data sharing channel of CAN fieldbus realization field level.
The SVC monitor supervision platform comprises regulon, photoelectricity trigger element, valve photodetector unit, monitoring unit, Microcomputer Protection unit and host computer and higher level's automated system etc. from hardware, and each processing unit is responsible for different functions.As Fig. 3, collection of simulant signal, calculating that regulon is responsible for the SVC system are regulated and are triggered, the photoelectricity trigger element triggers optical fiber by 132 SVC thyristor valve TE plate is triggered, the valve photodetector unit detects SVC thyristor valve TE plate running status in real time by 132 repayment optical fiber equally, and field control unit and monitoring unit are responsible for the switching node signal of SVC system is gathered and controlled.
Each unit of SVC monitor supervision platform is according to different functions, be in different levels from physics and electrical structure, interconnect by the CAN fieldbus each other, each unit passes through serial communication lines such as RS232 or RS485 again according to its different function, form the master-slave mode distributed architecture.As Fig. 4, constituted the communication network of the middle level respectively being monitored subelement by CAN Bus, make each monitoring unit monitor according to function separately, and by communication network realization exchanges data, wherein regulon carries out the adjusting of SVC, calculate, monitoring unit carries out the monitoring of SVC system, it detects by the thyristor running status of the distributed communication mode of RS485 to 6 thyristor valve group brachium pontis, be VBE1, VBE2 ... VBE6, control unit is then monitored water-cooling system by the RS485 communication mode on the spot, by the RS232 communication mode filter branches is monitored.And higher level's automated system is carried out communication and monitoring by the CDT stipulations to the SVC monitor supervision platform.
The layered distribution type structure of stationary reactive compensation monitoring platform has guaranteed control and the monitoring of SVC control system to numerous and jumbled whole SVC device, is the model of industrial control system controlling platform.
Claims (8)
1; a kind of layered distribution type structure Static Var Compensator (SVC) monitor supervision platform; it is characterized in that: this stationary reactive compensation monitoring platform has comprised bottom; three levels in middle level and upper strata; communication manager wherein; Static Var Compensator branch road Microcomputer Protection unit; the auxiliary protection unit; the water-cooling system monitoring; valve base electronic device (VBE) is in the bottom of monitor supervision platform; they pass through RS232; the RS485 serial line interface is connected with the monitor supervision platform middle level and realizes bottom distribution communication with serial mode; the monitor supervision platform middle level comprises control on the spot; the control of standing; regulon; main monitoring unit; they interconnect by serial communication bus CAN and realize the middle level communication in point-to-point mode; the upper strata of monitor supervision platform is higher level's automated system, and it carries out communication according to the middle level of CDT communication protocol and monitor supervision platform.
2, stationary reactive compensation monitoring platform according to claim 1 is characterized in that:
Valve base electronic device (VBE) by the RS485 bus adopt one main many from, host query and the communication modes of replying.
3. stationary reactive compensation monitoring platform according to claim 1 is characterized in that:
Monitoring unit adopts master mode and the communication of six valve detecting units, the valve fault-signal of six valve detecting units of monitoring unit cyclic query, BOD actuating signal and PT disconnection signal, and the status signal of valve is inquired about in timing, send abort light to monitoring unit by the IO mouth to monitoring unit when detecting bad number of valve greater than set point as the valve detecting unit, when monitoring unit is received this signal this element communication priority rank is put height, to this unit inquiry valve fault-signal.
4. stationary reactive compensation monitoring platform according to claim 3 is characterized in that:
Monitoring unit is gathered each switching value state at any time by the switching value input; Static Var Compensator branch road Microcomputer Protection unit, auxiliary protection unit, water-cooling system monitoring unit are monitored; report by the CAN bus, and make corresponding protection action according to protection level separately.
5. stationary reactive compensation monitoring platform according to claim 3 is characterized in that:
Monitoring unit adopts the broadcast mode communication, at any time the fault data of broadcast transmission monitoring unit acquisition process, status data and command execution results and receive the Work in Place station and the control command of remote operation platform and contact order.
7, SVC monitor supervision platform according to claim 1 is characterized in that:
Regulate arithmetic element the trigger angle of Static Var Compensator is calculated fast, and issue photoelectricity detection trigger unit (VBE) with the form of 6 phase electric pulses; Main monitoring unit, regulon, Control work station and station control operating desk are then realized the high-speed figure passage of on-the-spot one-level by the CAN fieldbus on the spot; Then interconnected by the communication manager realization to higher level's automated system, communication manager has been taken on the function of bridge and stipulations conversion.
8, stationary reactive compensation monitoring platform according to claim 1 is characterized in that:
Regulon, collection of simulant signal, the calculating be responsible for the Static Var Compensator system are regulated and are triggered;
The photoelectricity trigger element triggers optical fiber by 132 Static Var Compensator thyristor valve TE plate is triggered;
The valve photodetector unit detects Static Var Compensator thyristor valve running status in real time by 132 repayment optical fiber;
Field control unit and monitoring unit are responsible for the switching node signal of Static Var Compensator is gathered and controlled.
9, stationary reactive compensation monitoring platform according to claim 8, it is characterized in that: each unit of described stationary reactive compensation monitoring platform is in different levels according to the physical electrical structure, interconnect by the CAN fieldbus each other, each unit passes through RS232 or RS485 serial communication line according to its different function again, form the master-slave mode distributed architecture, wherein regulon carries out the adjusting of Static Var Compensator, calculate, monitoring unit carries out the monitoring of Static Var Compensator system, it detects by the thyristor running status of the distributed communication mode of RS485 to 6 thyristor valve group brachium pontis, control unit is then monitored water-cooling system by the RS485 communication mode on the spot, by the RS232 communication mode filter branches is monitored, and higher level's automated system is carried out communication and monitoring by the CDT stipulations to stationary reactive compensation monitoring platform.
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| CNB2005101026599A CN100373735C (en) | 2005-09-13 | 2005-09-13 | Stationary reactive compensation monitoring platform with layered distribution type structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986512A (en) * | 2010-10-29 | 2011-03-16 | 中国电力科学研究院 | Method for designing communication protocol of high-voltage and direct-current (HVDC) thyristor valve base electronic equipment |
| CN102709921A (en) * | 2012-05-30 | 2012-10-03 | 中国电力科学研究院 | Control circuit and control method of low-voltage reactive compensation device |
| CN103001233A (en) * | 2012-10-24 | 2013-03-27 | 株洲变流技术国家工程研究中心有限公司 | Wireless remote monitoring system and wireless remote monitoring method for reactive compensation device |
| CN105823980A (en) * | 2016-05-04 | 2016-08-03 | 国家电网公司 | Static var compensator thyristor valve block control performance on-site detection method and device |
| CN105933341A (en) * | 2016-06-28 | 2016-09-07 | 南宁华供电力科技有限公司 | Simple communication management machine scheme |
| CN106532930A (en) * | 2016-09-23 | 2017-03-22 | 清华大学 | Intelligent monitoring system of static synchronous compensator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU646957B2 (en) * | 1991-07-01 | 1994-03-10 | Superconductivity, Inc. | Shunt connected superconducting energy stabilizing system |
| CN100347921C (en) * | 2004-02-20 | 2007-11-07 | 清华大学 | Distribution type integrated electric energy quality regulator |
| CN1322650C (en) * | 2004-09-17 | 2007-06-20 | 清华大学 | Distributive continuous reactive generator |
-
2005
- 2005-09-13 CN CNB2005101026599A patent/CN100373735C/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986512A (en) * | 2010-10-29 | 2011-03-16 | 中国电力科学研究院 | Method for designing communication protocol of high-voltage and direct-current (HVDC) thyristor valve base electronic equipment |
| CN101986512B (en) * | 2010-10-29 | 2014-03-12 | 中国电力科学研究院 | Method for designing communication protocol of high-voltage and direct-current (HVDC) thyristor valve base electronic equipment |
| CN102709921A (en) * | 2012-05-30 | 2012-10-03 | 中国电力科学研究院 | Control circuit and control method of low-voltage reactive compensation device |
| CN102709921B (en) * | 2012-05-30 | 2014-02-19 | 中国电力科学研究院 | Control method of low-voltage reactive compensation device |
| CN103001233A (en) * | 2012-10-24 | 2013-03-27 | 株洲变流技术国家工程研究中心有限公司 | Wireless remote monitoring system and wireless remote monitoring method for reactive compensation device |
| CN105823980A (en) * | 2016-05-04 | 2016-08-03 | 国家电网公司 | Static var compensator thyristor valve block control performance on-site detection method and device |
| CN105823980B (en) * | 2016-05-04 | 2018-09-07 | 国家电网公司 | Static Var Compensator thyristor controlled series compensation control performance in-situ check and test method and device |
| CN105933341A (en) * | 2016-06-28 | 2016-09-07 | 南宁华供电力科技有限公司 | Simple communication management machine scheme |
| CN106532930A (en) * | 2016-09-23 | 2017-03-22 | 清华大学 | Intelligent monitoring system of static synchronous compensator |
| CN106532930B (en) * | 2016-09-23 | 2018-12-28 | 清华大学 | The intelligent monitor system of static synchronous compensator |
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| CN100373735C (en) | 2008-03-05 |
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Assignee: China Electric Prime Technology Co., Ltd. Assignor: China Electric Power Research Institute Contract fulfillment period: 2008.10.10 to 2014.10.10 contract change Contract record no.: 2008990001344 Denomination of invention: Stationary reactive compensation monitoring platform with layered distribution type structure Granted publication date: 20080305 License type: Exclusive license Record date: 2008.12.3 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.10 TO 2014.10.10; CHANGE OF CONTRACT Name of requester: CLP PURUI TECHNOLOGY CO., LTD. Effective date: 20081203 |
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Effective date of registration: 20130204 Address after: 100085 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee after: China Electric Power Research Institute Patentee after: State Grid Corporation of China Address before: 100085 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |