CN201887483U - Reactive compensation intelligent monitoring manager - Google Patents
Reactive compensation intelligent monitoring manager Download PDFInfo
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- CN201887483U CN201887483U CN2010206845352U CN201020684535U CN201887483U CN 201887483 U CN201887483 U CN 201887483U CN 2010206845352 U CN2010206845352 U CN 2010206845352U CN 201020684535 U CN201020684535 U CN 201020684535U CN 201887483 U CN201887483 U CN 201887483U
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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
- Y02E40/30—Reactive power compensation
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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
- Y02E40/70—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
- 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
The utility model relates to a reactive compensation intelligent monitoring management system, comprising a signal acquisition module (1); and the signal output end of the signal acquisition module (1) is connected with the signal input end of a signal processing module (2), and the signal output end of the signal processing module (2) is connected with the signal input end of an execution module (3). The reactive compensation intelligent monitoring manager has the remarkable effects that reasonable switching of a capacitor enables a power grid to achieve ideal compensation balancing effect, and no inrush current input of the capacitor enables the electricity consumption of a compensation device to be reduced to the minimum, and real-time monitoring can be realized to judge the health condition of system equipment, so as to know the reactive compensation effect.
Description
Technical field
The present invention relates to field of power, especially a kind of reactive power compensation intelligent monitoring management system.
Background technology
At present, in the public change low-pressure side of urban power distribution network,, cause common transformer low-pressure side line loss big because the continuous increase of user household electrical equipment inductive load makes power factor lower.Add up domestic town and country reactive loss by the electric pressure branch: the loss of 0.4KV level accounts for 50%, and the 10KV level accounts for 30%, 35KV and abovely account for 20%.Therefore it is significant to carry out the following reactive power compensation of 10KV voltage gradation.
In recent years, because development of computer, reactive power compensation technology has obtained very big improvement, and the development of reactive power compensator has entered a new stage.Yet, still there is undercompensation in many electrical networks, regulating measure falls behind, at present domestic is to carry out three-phase isostatic compensation (being that three-phase is mended altogether) in distribution transformer 400V side than universal way, low-pressure reactive compensation long-term lacking monitoring means, rely on the automatic switching of idle compensating control fully, and can not grasp low-voltage reactive power power, power factor (PF), three-phase imbalance and reactive power compensation situation etc. in real time, brought considerable influence for the operational management work of low-voltage reactive power.
Three-phase capacitor switching type compensation arrangement is simultaneously adopted in the three-phase isostatic compensation.Use the three-phase power capacitor in this class compensation arrangement, calculating also by electric current and other the two phase line voltages that detect a certain phase, the input quantity of control capacitor reaches the compensation purpose.Because capacitor equates with the reactive current that three-phase provides, and three-phase while switching, so this class compensation arrangement only is applicable to that three-phase current is in a basic balance, power is main distribution district.When the load three-phase current unbalance the time, can not make three-phase all obtain good compensation, may cause a certain phase overcompensation, another phase undercompensation.When switching capacitance, be criterion often with the power factor, the frequent switching when underloading occurring easily, and load reactive power compensation deficiency when heavier.
Summary of the invention
Problem to be solved by this invention is to provide a kind of control capacitor switching reactive power compensation intelligent monitoring management system accurately.
For achieving the above object, the invention provides a kind of reactive power compensation intelligent monitoring management system, comprise signal acquisition module, the signal output part of this signal acquisition module is connected with the signal input part of signal processing module, the signal output part of this signal processing module is connected with the signal input part of Executive Module, it is characterized in that, described signal acquisition module comprises No. three current transformers, No. three voltage transformers and six road signal conditioning circuits, described No. three current transformers are connected with the current input terminal of described six road signal conditioning circuits, described No. three voltage transformers are connected with the voltage input end of described six road signal conditioning circuits, and the output of described six road signal conditioning circuits is connected with the input of described signal processing module;
Described signal processing module is provided with DSP signal processor, AVR microcontroller, the input of described DSP signal processor is connected with the output of described six road signal conditioning circuits, the output of described DSP signal processor is connected with the input of described AVR microcontroller, described AVR microcontroller is connected with power drive interface by general purpose I/O interface, and this power drive interface is connected with described Executive Module;
Described Executive Module comprises the control signal photoisolator, the driving signal input of this control signal photoisolator is connected with described power drive interface, the output of described control signal photoisolator is connected with the signal input end of CPU, this CPU also is provided with the zero cross signal input and is connected with the output of zero cross detection circuit, and this zero cross detection circuit detects the no-voltage and the zero current signal of three phase mains; Described CPU is connected with at least one group of circuits for triggering, these circuits for triggering are provided with photoisolator, this photoisolator input is connected with described CPU first output, the output of described photoisolator is connected with the input of trigger control circuit, this trigger control circuit first output is connected with the gate pole of first thyristor, described trigger control circuit second output is connected with the gate pole of second thyristor, the negative pole of the positive pole of described first thyristor and described second thyristor all connects one in the three phase mains mutually after connecting, the negative pole of described first thyristor with all be connected the other end earth connection of this capacitor after the positive pole of described second thyristor is connected with an end of capacitor; Described circuits for triggering also are provided with relay driver, the input of this relay driver is connected with described CPU second output, the output of described relay driver is connected with magnetic latching relay, and the normal open switch of this magnetic latching relay is connected across between the two poles of the earth of described first thyristor, second thyristor.
No. three current transformers, No. three voltage transformers carry out data sampling to the electrical network loop, sampled data is transferred to the DSP signal processor after six road signal conditioning circuits are revised sampled data, the DSP signal processor carries out the A/D digital-to-analogue conversion to data, and the digital signal after the logarithmic mode conversion is carried out data computation and processing, calculate the frequency of electrical network three-phase, active power, reactive power, electrical quantitys such as power factor, the peripheral unit circuit of DSP signal processor assists it to finish data/address bus, address bus, the function of control bus, finish data acquisition, data transaction, after data computation is analyzed, give the AVR microcontroller with the result transmission of data analysis computing, the AVR microcontroller is judged optimized compensation way in conjunction with electrical network actual measurement parameter, the output control signal corresponding is mated the best capacitance of compensation automatically, phase splitting compensation way and three-phase are mended way altogether, and the AVR microcontroller makes the control signal of power drive interface output reactive compensation switching by inner general purpose I/O interface;
The CPU that Executive Module is provided with receives the control signal of control signal photoisolator output, when CPU receives the no-voltage of the detected three phase mains of zero cross detection circuit and zero current signal, CPU sends triggering signal, pass through circuits for triggering, trigger controllable silicon (first thyristor and second thyristor), make first thyristor and the second thyristor conducting, thereby make the control compensation circuit closed, after first thyristor and second thyristor are stablized the conducting operation, the work of CPU control relay driver control magnetic latching relay, magnetic latching relay normal open switch closure, the control signal to the controllable silicon gate pole is cancelled in CPU control simultaneously, and first thyristor and second thyristor are turn-offed when current over-zero naturally.
By power network current, voltage parameter are sampled, calculate electrical quantitys such as effective voltage, electric current, power factor, active power and reactive power, capacity in conjunction with each group electric capacity compensates respectively, simultaneously select only combination to carry out switching according to the idle degree of unbalance of capacitance and A, B, C three-phase, be that mixed compensation (phase splitting compensation combines with the common compensation of three-phase) combines with grading compensation, realize the reasonable switching of electric capacity, make electrical network reach desirable balanced compensated effect, avoid one to cross benefit mutually, a situation of owing mutually to mend takes place.
Make voltage zero-cross input and current over-zero excision by controllable silicon, realized the no-flashy-flow input of capacitor, control magnetic latching relay again and move continuously, what make compensation arrangement also reduces to minimum from power consumption.
Described signal processing module also is provided with RS485 communication interface and RS232 communication interface; Described signal processing module also is connected with the communication management module, described communication management module comprises PC reactive power compensation monitoring management system, described AVR microcontroller is connected with described RS485 communication interface, and this RS485 communication interface is communicated by letter with described PC reactive power compensation monitoring management system; Described AVR microcontroller also is connected with described RS232 communication interface, this RS232 communication interface is connected with the GPRS/GSM module, this GPRS/GSM module is communicated by letter with described PC reactive power compensation monitoring management system, the also two-way wireless micro-power sending module that is connected with of described RS232 communication interface, the two-way wireless micro-power receiver module that is connected with of this wireless micro-power sending module, this wireless micro-power receiver module and described two-way connection of PC reactive power compensation monitoring management system, the also two-way handheld reading meter device that is connected with of described wireless micro-power receiver module, this handheld reading meter device and described two-way connection of PC reactive power compensation monitoring management system.
The RS485 communication interface is realized signal processing module and PC reactive power compensation monitoring management system real time communication, by PC reactive power compensation monitoring management system electric data is monitored in real time.
Signal processing module is by RS232 communication interface, GPRS/GSM module, realization sends real time data and the wireless PC reactive power compensation monitoring management system that uploads to of historical data (integral point data, statistics, harmonic data, power failure data, real time data, operational factor etc.) data by PC reactive power compensation monitoring management system to signal processing module and carries out the parameter setting.
The RS232 communication interface cooperates the wireless micro-power sending module, sends data by wireless microwave mode short distance, and supporting handheld reading meter device has possessed functions such as selecting to copy and accept, copy and accept automatically, be provided with parameter.In copying and accepting data, realized respectively the selectivity of integral point data, statistics, harmonic data, power failure data, real time data, operational factor is copied and accepted, promptly copied and accepted some day or a certain item number certificate; Automatically copy and accept copy and accept (because the distribution testing control instrument can be preserved 2 months data, so the data of handheld reading meter device also corresponding readable this month and last month) that to finish all data of a period of time.Handheld reading meter device by RS232 communication interface control with the data upload of signal processing module unloading to PC reactive power compensation monitoring management system, also can carry out the parameter setting to signal processing module.
Integrated data analysis management software is installed in the PC reactive power compensation monitoring management system, the reactive power compensation data are read, analyze, gather, add up, and judge the health status of system equipment thus, understand the effect of reactive power compensation, help data analysis, propose measures to rectify and reform, improve the power grid quality tool and have very important significance.Also can institute's data monitored be processed into form, curve, rod figure, and obtain rate of qualified voltage, load factor, unbalance factor, power supply reliability etc. by the reactive power compensation measurement and control unit is carried out the parameter setting.
Described control signal photoisolator also receives the output signal of lack detection circuit; this lack detection circuit detects whether phase shortage of three phase mains; one end of described capacitor also is connected with and detects and protective circuit, and the output of this detection and protective circuit is connected with the detection signal input of described CPU.
Lack detection circuit detects the loop and faults such as phase shortage, under-voltage, overvoltage whether occur; and signal is transferred to CPU; CPU also receives and detects and the detected electric capacity status signal of protective circuit; CPU is according to fault-signals such as phase shortage, under-voltage, overvoltages; in conjunction with the electric capacity status signal, whether decision connects capacitor loop.
Also two-way respectively display/keyboard, the data storage of being connected with of described AVR microcontroller.
The AVR microcontroller is provided with the synchronous serial communication interface by inside and is connected with data storage, the AVR microcontroller also connects real-time clock by serial communication interface, the AVR microprocessor controls will be saved in the data storage through the data after adding up, gather and analyzing, display/keyboard is human-computer interaction interface and equipment, according to the scene, the parameter of system's operation is set by keyboard.
Remarkable result of the present invention is: the common compensation of three-phase combines and combines with grading compensation, realizes the reasonable switching of electric capacity, makes electrical network reach desirable balanced compensated effect; Voltage zero-cross drops into and the current over-zero excision, has realized the no-flashy-flow input of capacitor, controls magnetic latching relay again and moves continuously, and what make compensation arrangement reduces to minimum from power consumption; PC reactive power compensation monitoring management system reads, analyzes, gathers, adds up the reactive power compensation data, and judge the health status of system equipment thus, and understand the effect of reactive power compensation, help data analysis, propose measures to rectify and reform, have very important significance improving the power grid quality tool.
Description of drawings
Fig. 1 is an operation principle block diagram of the present invention;
Fig. 2 is an operation principle schematic diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of reactive power compensation intelligent monitoring management system, comprise signal acquisition module 1, the signal output part of this signal acquisition module 1 is connected with the signal input part of signal processing module 2, the signal output part of this signal processing module 2 is connected with the signal input part of Executive Module 3, signal acquisition module 1 comprises No. three current transformers 4, No. three voltage transformers 5 and six road signal conditioning circuits 6, No. three current transformers 4 are connected with the current input terminal of described six road signal conditioning circuits 6, No. three voltage transformers 5 are connected with the voltage input end of described six road signal conditioning circuits 6, three current transformers, three voltage transformers are the electric current and the voltage of secondary side with primary side current and voltage transitions, six road signal conditioning circuits 6 are as signal damping, amplitude and polarity to signal are made suitable adjustment, handle for late-class circuit, the DSP signal processor 7 that the adjusted signal of six road signal conditioning circuits, 6 outputs is provided with to signal processing module 2, the analog signal of 7 pairs of inputs of DSP signal processor is handled, convert digital signal to, digital signal after DSP signal processor 7 will be changed outputs to AVR microcontroller 8, AVR microcontroller 8 is by its inner general purpose I/O interface that is provided with, the power drive interface 9 of outer setting is transferred to control signal the control signal photoisolator of Executive Module 3;
The output of control signal photoisolator is connected with the signal input end of CPU11, CPU11 receives the signal that the control signal photoisolator transmits, CPU11 also receives the no-voltage and the zero current signal of zero cross detection circuit 12 outputs simultaneously, CPU11 is built-in with house dog, this CPU11 output control signal control photoisolator 13, photoisolator 13 transfers signals to trigger control circuit 14, trigger control circuit 14 is exported two path control signal respectively to the gate pole of the first thyristor T1 and the gate pole of the second thyristor T2, control the conducting of the first thyristor T1 and the second thyristor T2 respectively, the control compensation circuit closed, capacitor C is inserted, after the first thyristor T1 and the second thyristor T2 stablize the conducting operation, CPU11 control relay driver 15 is by working by relay driver 15 control magnetic latching relays 16, magnetic latching relay 16 normal open switch closures, CPU11 cancels the control signal to the first thyristor T1 gate pole and the second thyristor T2 gate pole simultaneously, and the first thyristor T1 and the second thyristor T2 are turn-offed when current over-zero naturally.
Among the present invention, above-mentioned CPU11 output control signal control photoisolator 13, CPU11 sends one tunnel control signal incessantly, according to the control signal that transmits, CPU11 sends several roads control signal, electrical network is carried out mixed compensation (phase splitting compensation combines with the common compensation of three-phase) to combine with grading compensation, realize the reasonable switching of a plurality of electric capacity, make electrical network reach desirable balanced compensated effect, but the front only set forth in the control signal of CPU11 output in a road transmission course, the transmission course of other several roads control signals also as the front say similar, at this repeated description no longer.
Also two-way respectively display/keyboard 26, the data storage 27 of being connected with of AVR microcontroller 8.AVR microcontroller 8 is provided with the synchronous serial communication interface by inside and is connected with data storage 27, AVR microcontroller 8 also connects real-time clock by serial communication interface, 8 controls of AVR microcontroller will be saved in the data storage 27 through the data after adding up, gather and analyzing, display/keyboard 26 is human-computer interaction interface and equipment, according to the scene, the parameter of system's operation is set by keyboard.
Integrated data analysis management software is installed in the PC reactive power compensation monitoring management system 24, the reactive power compensation data are read, analyze, gather, add up, and judge the health status of system equipment thus, understand the effect of reactive power compensation, help data analysis, propose measures to rectify and reform, improve the power grid quality tool and have very important significance.Also can institute's data monitored be processed into form, curve, rod figure, and obtain rate of qualified voltage, load factor, unbalance factor, power supply reliability etc. by the reactive power compensation measurement and control unit is carried out the parameter setting.
The control signal photoisolator also receives the output signal of lack detection circuit 25; this lack detection circuit 25 detects whether phase shortage of three phase mains; the end of described capacitor C also is connected with and detects and protective circuit 28, and the output of this detection and protective circuit 28 is connected with the detection signal input of described CPU11.
The native system device is contained in the power distribution room capacitor compensation cabinet, according to the scene parameter is set, and quantities is little, is applicable to newly-built distribution and old net transformation.
The above embodiment of the present invention only is to be explanation example of the present invention, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other multi-form variation and changes on the basis of the above description.Here can't give exhaustive to all execution modes.Everyly belong to the row that conspicuous variation that technical scheme of the present invention amplifies out or change still are in protection scope of the present invention.
Claims (4)
1. reactive power compensation intelligent monitoring management system, comprise signal acquisition module (1), the signal output part of this signal acquisition module (1) is connected with the signal input part of signal processing module (2), the signal output part of this signal processing module (2) is connected with the signal input part of Executive Module (3), it is characterized in that, described signal acquisition module (1) comprises No. three current transformers (4), No. three voltage transformers (5) and six road signal conditioning circuits (6), described No. three current transformers (4) are connected with the current input terminal of described six road signal conditioning circuits (6), described No. three voltage transformers (5) are connected with the voltage input end of described six road signal conditioning circuits (6), and the output of described six road signal conditioning circuits (6) is connected with the input of described signal processing module (2);
Described signal processing module (2) is provided with DSP signal processor (7), AVR microcontroller (8), the input of described DSP signal processor (7) is connected with the output of described six road signal conditioning circuits (6), the output of described DSP signal processor (7) is connected with the input of described AVR microcontroller (8), described AVR microcontroller (8) is connected with power drive interface (9) by general purpose I/O interface, and this power drive interface (9) is connected with described Executive Module (3);
Described Executive Module (3) comprises control signal photoisolator (10), the driving signal input of this control signal photoisolator (10) is connected with described power drive interface (9), the output of described control signal photoisolator (10) is connected with CPU(11) signal input end, this CPU(11) also be provided with the zero cross signal input and be connected with the output of zero cross detection circuit (12), this zero cross detection circuit (12) detects the zero voltage signal of three phase mains; Described CPU(11) is connected with at least one group of circuits for triggering, these circuits for triggering are provided with photoisolator (13), this photoisolator (13) input and described CPU(11) first output is connected, the output of described photoisolator (13) is connected with the input of trigger control circuit (14), these trigger control circuit (14) first outputs are connected with the gate pole of first thyristor (T1), described trigger control circuit (14) second outputs are connected with the gate pole of second thyristor (T2), the negative pole of the positive pole of described first thyristor (T1) and described second thyristor (T2) all connects one in the three phase mains mutually after connecting, the negative pole of described first thyristor (T1) with all be connected the other end earth connection of this capacitor (C) after the positive pole of described second thyristor (T2) is connected with an end of capacitor (C); Described circuits for triggering also are provided with relay driver (15), input of this relay driver (15) and described CPU(11) second output is connected, the output of described relay driver (15) is connected with magnetic latching relay (16), and the normal open switch of this magnetic latching relay (16) is connected across between the two poles of the earth of described first thyristor (T1), second thyristor (T2).
2. according to the described reactive power compensation intelligent monitoring management system of claim 1, it is characterized in that described signal processing module (2) also is provided with RS485 communication interface (18) and RS232 communication interface (19); Described signal processing module (2) also is connected with communication management module (17), described communication management module (17) comprises PC reactive power compensation monitoring management system (24), described AVR microcontroller (8) is connected with described RS485 communication interface (18), and this RS485 communication interface (18) is communicated by letter with described PC reactive power compensation monitoring management system (24); Described AVR microcontroller (8) also is connected with described RS232 communication interface (19), this RS232 communication interface (19) is connected with GPRS/GSM module (20), this GPRS/GSM module (20) is communicated by letter with described PC reactive power compensation monitoring management system (24), the also two-way wireless micro-power sending module (21) that is connected with of described RS232 communication interface (19), the two-way wireless micro-power receiver module (22) that is connected with of this wireless micro-power sending module (21), this wireless micro-power receiver module (22) and two-way connection of described PC reactive power compensation monitoring management system (24), the also two-way handheld reading meter device (23) that is connected with of described wireless micro-power receiver module (22), this handheld reading meter device (23) and two-way connection of described PC reactive power compensation monitoring management system (24).
3. according to the described reactive power compensation intelligent monitoring management system of claim 1; it is characterized in that; described control signal photoisolator (10) also receives the output signal of lack detection circuit (25); this lack detection circuit (25) detects whether phase shortage of three phase mains; one end of described capacitor (C) also is connected with and detects and protective circuit (28) output of this detection and protective circuit (28) and described CPU(11) the detection signal input be connected.
4. according to the described reactive power compensation intelligent monitoring management system of claim 1, it is characterized in that also two-way respectively display/keyboard (26), the data storage (27) of being connected with of described AVR microcontroller (8).
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| CN2010206845352U CN201887483U (en) | 2010-12-28 | 2010-12-28 | Reactive compensation intelligent monitoring manager |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055198A (en) * | 2010-12-28 | 2011-05-11 | 重庆樱花电气开关有限公司 | Reactive compensation intelligent monitoring management system |
| CN103245845A (en) * | 2012-02-06 | 2013-08-14 | 上海市电力公司 | Intelligent grid fault recognition equipment |
| CN103683300A (en) * | 2012-09-06 | 2014-03-26 | 深圳市三和电力科技有限公司 | Dynamic STS reactive power compensation switching regulator |
-
2010
- 2010-12-28 CN CN2010206845352U patent/CN201887483U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055198A (en) * | 2010-12-28 | 2011-05-11 | 重庆樱花电气开关有限公司 | Reactive compensation intelligent monitoring management system |
| CN102055198B (en) * | 2010-12-28 | 2012-12-12 | 重庆樱花电气开关有限公司 | Reactive compensation intelligent monitoring management system |
| CN103245845A (en) * | 2012-02-06 | 2013-08-14 | 上海市电力公司 | Intelligent grid fault recognition equipment |
| CN103683300A (en) * | 2012-09-06 | 2014-03-26 | 深圳市三和电力科技有限公司 | Dynamic STS reactive power compensation switching regulator |
| CN103683300B (en) * | 2012-09-06 | 2016-03-30 | 深圳市三和电力科技有限公司 | Dynamic STS reactive compensation switching adjuster |
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Address after: 401121 fortune Avenue, Chongqing, Yubei District, No. 16 Co-patentee after: Chongqing Electric Power Corp. Chengqu Power Supply Bureau Patentee after: Chongqing Sakura Energy Technology Co., Ltd. Co-patentee after: Chongqing Electric Power Corp Shapingba Power Supply Bureau Address before: 401121 fortune Avenue, Chongqing, Yubei District, No. 16 Co-patentee before: Chongqing Electric Power Corp. Chengqu Power Supply Bureau Patentee before: Chongqing Yinghua Electric Switch Co., Ltd. Co-patentee before: Chongqing Electric Power Corp Shapingba Power Supply Bureau |
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Granted publication date: 20110629 Termination date: 20181228 |