CN105529723A - Intelligent reactive compensation device - Google Patents
Intelligent reactive compensation device Download PDFInfo
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- CN105529723A CN105529723A CN201510078394.7A CN201510078394A CN105529723A CN 105529723 A CN105529723 A CN 105529723A CN 201510078394 A CN201510078394 A CN 201510078394A CN 105529723 A CN105529723 A CN 105529723A
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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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Abstract
The invention relates to an intelligent reactive compensation device, and aims at solving the shortages in the prior art. According to the technical scheme, the intelligent reactive compensation device comprises an intelligent reactive compensation controller, a first intelligent capacitor, a second intelligent capacitor, a third intelligent capacitor, a disconnecting switch and a current transformer, wherein the intelligent reactive compensation controller comprises a power supply module, an AC sampling module, a communication module, an ARM control unit, a clock module, a man-machine interaction module and a data storage module; the communication module is electrically connected with an Ethernet interface, a WIFI interface, an RS485 interface, a USB interface and a GPRS interface; and an input end of the power supply module is connected with three-phase power; and the AC sampling module, the communication module and the ARM control unit all are powered by an output end of the power supply module.
Description
Technical field
The present invention is a kind of electrical detection facility, particularly relates to a kind of intelligence connection reactive power compensator.
Background technology
The development speed of current China power industry, be progressively converted into the market demand to determine by depending primarily on scale of investment in the past, electricity market also will progressively be changed to buyer's market by seller's market, China's generating in the past and distribution ratio between investments are 1:0.12, greatly lag behind the ratio between investments of the 1:0.6-0.7 of advanced country, due to the important directions that power distribution automation is China's electric power development in recent years, add China vast in territory, power equipment is backwardness generally, distribution demand is also continuing to increase, therefore, there is more TTU product in domestic market, do to obtain good You Nanrui group, Xu Ji group etc., but their product price is probably at 5000-1 about ten thousand, price is higher, and the function of most of product is complete not, compatible and versatility is poor, the extendibility of system, not open, along with electronic technology and the high speed development of the communication technology and the requirement of power distribution automation, following TTU equipment will towards integrated height, reliability is high, practicality is high, compatible high future development.
TTU belongs to distribution network terminal important component part, it belongs to the bottom of distribution automation system, the data of the physical quantity such as voltage, electric current, active power, reactive power, power factor, frequency, harmonic wave of main collection distribution transformer, and record stores these data.For the specialty analysis of power department, as load prediction, line loss analyzing, breakdown judge, economical operation etc. provide data.And then economy and the fail safe of operation of power networks is improved from technology and management.Since 2010, the basic function that the TTU in market has have following some, Real time Data Acquisition function: integral point or fixed point can wait as per minute the data such as three-phase voltage, three-phase current, active power, reactive power, mains frequency, three-phase coil temperature recording distribution transformer.Real time monitoring function: the Parameters variation situations such as the three-phase voltage of distribution transforming, three-phase current, active power, reactive power, mains frequency, three-phase coil temperature can be detected in real time, record and add up various parameter maximum, minimum value, the time occurred, calculating mean value, exceed standard the data such as time cumulation.Real-time remote signaling function; There is remote signalling input port, distribution transforming high pressure low side switch can be detected, the quantity of states such as on-load voltage regulating switch gear, when on off state changes, record and report it current state and the time.Remote control and telemetry function: can change in time and out-of-limit situation according to detected three-phase voltage, electric current and power factor, start reactive power compensation and automatic Regulation strategy on the spot, calculate reactive power compensation amount and regulate tap amount, classification switched capacitor and adjustment transformer tapping etc.Data display function: display unit is convenient to site inspection data parameters and commissioning device, in addition to the above-described functions, also has self-diagnostic function, power loss data defencive function and fault self-recovering function as intelligent equipment.Function of Reactive Power Compensation Control: according to the idle situation of change in electrical network, the input of real-time control capacitor and excision, realize reactive power compensation.In existing low-voltage reactive compensator capable application, although meet the reactive power compensation basic demand of terminal use, and achieve intelligent functions to a certain extent.But in actual use, the mode that the compensation arrangement working condition of terminal use often adopts personnel on site to patrol on the one hand obtains, efficiency is extremely low, to device be in operation occur fault warning cannot transmit in time, abnormal state cannot be known in time, very easily cause economic loss, and there is generality in this kind of situation.Electric administrative department is for the reactive power compensator be distributed under rural power grids, the public affairs change of city net, specially change on the other hand, and its fault, operation conditions are even damaged and all can not be tackled in time by Real-Time Monitoring.More impossible Real-Time Monitoring is carried out to user side reactive power compensator, take timely measure to reduce customer power supply transformer loss and line loss according to the effect of on-the-spot reactive power compensation.There is in the industry the product of multiple electric energy quality detection device in current China, current design majority takes capture card add the design of industrial computer or take the design concept of one piece of MCU, but capture card adds the relatively morning of the design ap-plication of industrial computer, the checkout gear acquisition function of design is powerful, man-machine interaction is good, but cost is higher, volume is large, be not suitable for a large amount of fixed point and be placed in each Test Field, and do not realize intellectuality, networking, is difficult to the real-time of guarantee system, thus this design present be not a lot.Adopting based on the design concept of one piece of MCU is then that one piece of single-chip microcomputer completes and collects analyzing and processing and all function such as keyboard & display, communication, such as C8051F020, MPS230 from data, they have good control ability, feature: convenient, economical, performance is high, and reliability is strong.But, this pure single-chip microcomputer design is only applicable to data handling requirements not high, in the supervising device that operand is little, if single-chip microcomputer operating load is heavier, can affect the speed of service and the performance of single-chip microcomputer.
Summary of the invention
The object of the invention is to there is pure single-chip microcomputer design be only applicable to data handling requirements not high for solving in current technical scheme, in the supervising device that operand is little, if single-chip microcomputer operating load is heavier, the speed of service of single-chip microcomputer and the problem of performance can be affected, there is provided a kind of by the operating state of intelligent powerless compensation device, service data, line power factors vary state, the data such as fault warning are uploaded to cloud platform by wireless network and present to user in real time, automatic generation reactive power compensation Adjusted Option, fault solution etc. improve the task performance of reactive power compensator further, thus effectively reduce transformer loss and line loss, realize the intelligence connection reactive power compensator to the managing power consumption of transformer and circuit.
The technical solution adopted for the present invention to solve the technical problems is: a kind of intelligence connection reactive power compensator, it is characterized in that: comprise intelligence connection the control of reactive power compensating instrument and the first intelligence connection capacitor, second intelligence connection capacitor, 3rd intelligence connection capacitor, isolating switch, current transformer, the input of described first intelligence connection capacitor, the input of the second intelligence connection capacitor, be electrically connected with three-phase electricity by isolating switch after the input parallel connection of the 3rd intelligence connection capacitor, first communication terminal of described first intelligence connection capacitor is connected with the first communication terminal that described second intelligence joins capacitor, second communication terminal of described second intelligence connection capacitor is connected with the first communication terminal that described 3rd intelligence joins capacitor, second communication terminal of the 3rd intelligence connection capacitor is electrically connected with the RS485 interface that intelligence joins the control of reactive power compensating instrument, described current transformer is disposed in three-phase electricity, output and the described intelligence of described current transformer join the control of reactive power compensating instrument and are electrically connected, described intelligence connection the control of reactive power compensating instrument comprises power module, AC sampling module, communication module, ARM control unit, clock module, human-computer interaction module and data memory module, described communication module is electrically connected with Ethernet interface, WIFI interface, RS485 interface, USB interface and GPRS interface, the input of described power module is connected with three-phase electricity, described AC sampling module, communication module and ARM control unit are powered by described power module outlet, the voltage sample input of described AC sampling module is also connected with the output of described power module, the current sample input of described AC sampling module is electrically connected with the output of current transformer, the output of described AC sampling module is electrically connected with described ARM control unit, described ARM control unit is electrically connected with described communication module, described ARM control unit also respectively with the input of clock module, the input of human-computer interaction module and data memory module electrical connection, described RS485 interface comprises the RS485 interface connecting intelligence connection capacitor and the RS485 interface connecing peripheral hardware, the RS485 interface of described connection intelligence connection capacitor is all electrically connected with described communication module with the RS485 interface connecing peripheral hardware.In the present invention, control unit: 32 the ARM level processor-STM32F429 adopting ST, processing speed is faster, and frequency reaches 168M, supports floating-point operation, and built-in TFT shields driver.Power module: adopting switching power supply, providing the DC power supply needed for other circuit, for realizing the trouble free service of modules.AC sampling module: form primarily of data acquisition circuit and A/D chip, complete three-phase voltage, the sampling of current signal and analog-converted, A/D adopts ATT7022E high accuracy electricity acquisition chip, carries out analyzing and processing to voltage, electric current, power, harmonic wave.Human-computer interaction module: adopt 7 cun of TFT capacitance touch screens, display is more directly perceived, hommization.Data memory module: Large Copacity (256Mbit) storage chip adopting magnificent nation, preserves electrical measurement historical data, and reserved SD card interface, can customize according to customer demand.Clock module: adopt RX8025, real-time RTC, have stand-by power supply to provide electric power storage.The data such as the operating state of intelligent powerless compensation device, service data, line power factors vary state, fault warning are uploaded to cloud platform by wireless network and present to user in real time by the present invention, automatic generation reactive power compensation Adjusted Option, fault solution etc. improve the task performance of reactive power compensator further, thus effectively reduce transformer loss and line loss, realize the managing power consumption to transformer and circuit.
As preferably, described AC sampling module is DSP alternating current sampling circuit, and described DSP alternating current sampling circuit is connected with described ARM control unit by UART bus.
As preferably, described communication module is STM8S207R8T6 chip circuit, described RS485 interface comprises MAX13085 chip, resistance R8, resistance R9, resistance R11, resistance R12 and electric capacity C5, the RO end of described MAX13085 chip is held with the PA4 of described STM8S207R8T6 chip and is connected, described MAX13085 chip /RE with DE end all holds with the PA6 of described STM8S207R8T6 chip and is connected, described MAX13085 chip /RE and DE holds also by resistance R11 ground connection, the DI end of described MAX13085 chip is held with the PA5 of described STM8S207R8T6 chip and is connected, the VCC termination power of described MAX13085 chip, the VCC end of described MAX13085 chip is by electric capacity C5 ground connection, the A port of described MAX13085 chip connects power supply by resistance R8, the A port of described MAX13085 chip connects intelligence connection capacitor, the GND of described MAX13085 chip holds ground connection, the B port of described MAX13085 chip connects power supply by resistance R12, the B port of described MAX13085 chip connects peripheral hardware, resistance R9 is connected with between the B port of described MAX13085 chip and the A port of MAX13085 chip.
As preferably, described first intelligence connection capacitor, second intelligence connection capacitor and the 3rd intelligence connection capacitor include Chip Microcomputer A 1, human-computer interaction device A2, three-phase type low voltage power capacitor group, operating passing zero K switch D, current transformer TA, temperature sensor RT and circuit breaker Q F, one end of described operating passing zero K switch D is connected with three-phase electricity by circuit breaker Q F, the other end of described operating passing zero K switch D runs through current transformer TA and is connected with three-phase type low voltage power capacitor group, the control end of described operating passing zero K switch D is electrically connected with described Chip Microcomputer A 1, the output of described current transformer TA is electrically connected with described Chip Microcomputer A 1, described human-computer interaction device A2 is electrically connected with described Chip Microcomputer A 1, temperature sensor RT test side monitoring three-phase type low voltage power capacitor group, the output of temperature sensor RT is electrically connected with described Chip Microcomputer A 1, described Chip Microcomputer A 1 is electrically connected with communication module by RS485 bus.
As preferably, the first intelligence connection capacitor, the second intelligence connection capacitor and the 3rd intelligence connection capacitor are all equipped with voltage indicator lamp.
Substantial effect of the present invention is: the data such as the operating state of intelligent powerless compensation device, service data, line power factors vary state, fault warning are uploaded to cloud platform by wireless network and present to user in real time by the present invention, automatic generation reactive power compensation Adjusted Option, fault solution etc. improve the task performance of reactive power compensator further, thus effectively reduce transformer loss and line loss, realize the managing power consumption to transformer and circuit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of intelligence connection the control of reactive power compensating instrument in the present invention;
Fig. 3 is the circuit diagram of intelligence connection capacitor in the present invention;
Fig. 4 is the circuit diagram of communication module in the present invention;
Fig. 5 is the circuit theory diagrams of RS485 interface in the present invention.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
A kind of intelligence connection reactive power compensator, it is characterized in that: comprise intelligence connection the control of reactive power compensating instrument and the first intelligence connection capacitor, second intelligence connection capacitor, 3rd intelligence connection capacitor, isolating switch, current transformer, the input of described first intelligence connection capacitor, the input of the second intelligence connection capacitor, be electrically connected with three-phase electricity by isolating switch after the input parallel connection of the 3rd intelligence connection capacitor, first communication terminal of described first intelligence connection capacitor is connected with the first communication terminal that described second intelligence joins capacitor, second communication terminal of described second intelligence connection capacitor is connected with the first communication terminal that described 3rd intelligence joins capacitor, second communication terminal of the 3rd intelligence connection capacitor is electrically connected with the RS485 interface that intelligence joins the control of reactive power compensating instrument, described current transformer is disposed in three-phase electricity, output and the described intelligence of described current transformer join the control of reactive power compensating instrument and are electrically connected, described intelligence connection the control of reactive power compensating instrument comprises power module, AC sampling module, communication module, ARM control unit, clock module, human-computer interaction module and data memory module, described communication module is electrically connected with Ethernet interface, WIFI interface, RS485 interface, USB interface and GPRS interface, the input of described power module is connected with three-phase electricity, described AC sampling module, communication module and ARM control unit are powered by described power module outlet, the voltage sample input of described AC sampling module is also connected with the output of described power module, the current sample input of described AC sampling module is electrically connected with the output of current transformer, the output of described AC sampling module is electrically connected with described ARM control unit, described ARM control unit is electrically connected with described communication module, described ARM control unit also respectively with the input of clock module, the input of human-computer interaction module and data memory module electrical connection, described RS485 interface comprises the RS485 interface connecting intelligence connection capacitor and the RS485 interface connecing peripheral hardware, the RS485 interface of described connection intelligence connection capacitor is all electrically connected with described communication module with the RS485 interface connecing peripheral hardware.Described AC sampling module is DSP alternating current sampling circuit, and described DSP alternating current sampling circuit is connected with described ARM control unit by UART bus.Described communication module is STM8S207R8T6 chip circuit, described RS485 interface comprises MAX13085 chip, resistance R8, resistance R9, resistance R11, resistance R12 and electric capacity C5, the RO end of described MAX13085 chip is held with the PA4 of described STM8S207R8T6 chip and is connected, described MAX13085 chip /RE with DE end all holds with the PA6 of described STM8S207R8T6 chip and is connected, described MAX13085 chip /RE and DE holds also by resistance R11 ground connection, the DI end of described MAX13085 chip is held with the PA5 of described STM8S207R8T6 chip and is connected, the VCC termination power of described MAX13085 chip, the VCC end of described MAX13085 chip is by electric capacity C5 ground connection, the A port of described MAX13085 chip connects power supply by resistance R8, the A port of described MAX13085 chip connects intelligence connection capacitor, the GND of described MAX13085 chip holds ground connection, the B port of described MAX13085 chip connects power supply by resistance R12, the B port of described MAX13085 chip connects peripheral hardware, resistance R9 is connected with between the B port of described MAX13085 chip and the A port of MAX13085 chip.Described intelligence connection capacitor comprises Chip Microcomputer A 1, human-computer interaction device A2, three-phase type low voltage power capacitor group, operating passing zero K switch D, current transformer TA, temperature sensor RT and circuit breaker Q F, one end of described operating passing zero K switch D is connected with three-phase electricity by circuit breaker Q F, the other end of described operating passing zero K switch D runs through current transformer TA and is connected with three-phase type low voltage power capacitor group, the control end of described operating passing zero K switch D is electrically connected with described Chip Microcomputer A 1, the output of described current transformer TA is electrically connected with described Chip Microcomputer A 1, described human-computer interaction device A2 is electrically connected with described Chip Microcomputer A 1, temperature sensor RT test side monitoring three-phase type low voltage power capacitor group, the output of temperature sensor RT is electrically connected with described Chip Microcomputer A 1, described Chip Microcomputer A 1 is electrically connected with communication module by RS485 bus.
Control unit in the present embodiment: 32 the ARM level processor-STM32F429 adopting ST, processing speed is faster, and frequency reaches 168M, supports floating-point operation, and built-in TFT shields driver.Power module: adopting switching power supply, providing the DC power supply needed for other circuit, for realizing the trouble free service of modules.AC sampling module: form primarily of data acquisition circuit and A/D chip, complete three-phase voltage, the sampling of current signal and analog-converted, A/D adopts ATT7022E high accuracy electricity acquisition chip, carries out analyzing and processing to voltage, electric current, power, harmonic wave.Human-computer interaction module: adopt 7 cun of TFT capacitance touch screens, display is more directly perceived, hommization.Data memory module: Large Copacity (256Mbit) storage chip adopting magnificent nation, preserves electrical measurement historical data, and reserved SD card interface, can customize according to customer demand.Clock module: adopt RX8025, real-time RTC, have stand-by power supply to provide electric power storage.Described AC sampling module is DSP alternating current sampling circuit, and described DSP alternating current sampling circuit is connected with described ARM control unit by UART bus.
A control method for intelligence connection reactive compensation controlling device, comprises the following steps:
Step one, intelligence connection the control of reactive power compensating instrument starts, and completes Initialize installation, then synchronously performs step 2, step 3 and step 4,
Step 2; intelligence connection the control of reactive power compensating instrument is according to sensing data real time data monitoring function; the three-phase voltage of Real-time Collection distribution transformer, three-phase current, mains frequency, temperature; calculate active power, reactive power, power factor, voltage harmonic and current harmonics; according to parameter preset, overvoltage, under voltage, overcurrent, excess temperature, phase shortage, excessively humorous transfiniting are protected
Step 3, communication module transmission corresponding data is to human-computer interaction module, and human-computer interaction module shows voltage, electric current, power factor, reactive power, active power, total harmonic distortion and subharmonic, offset current, intelligence connection capacitor parameters in real time,
Step 4, Function of Reactive Power Compensation Control carried out by intelligence connection the control of reactive power compensating instrument, and adopt idle trend power flow algorithm, realize coding cycle switching function, according to the idle situation of change in electrical network, the input of real-time control capacitor and excision, realize reactive power compensation,
Step 5, when without event alarm, timing storage voltage, electric current, reactive power, active power, power factor, voltage/current harmonic wave, mains frequency, capacitor box electric current, compensation capacity and intelligence connection capacitor relevant parameter; When alarm event occurs, record alarm event type, relevant parameter, time of origin and end time, there is history data store and look facility.
Intelligent network sub-step is also included in step one,
Intelligent network sub-step, intelligence connection the control of reactive power compensating instrument joins capacitor automatic network-building by RS485 and intelligence, and intelligence connection the control of reactive power compensating instrument distributes ID automatically according to the ID allocation rule preset, and realizes idle control and information exchange functions; Upon connection during station server, provide remote communication interface, upload various Monitoring Data to backstage monitoring system by wired or wireless timing.
When intelligence connection the control of reactive power compensating instrument detects that network interruption or alarm event occur, carry out SMS notification and network interruption prompting.
The data such as the operating state of intelligent powerless compensation device, service data, line power factors vary state, fault warning are uploaded to cloud platform by wireless network and present to user in real time by the present embodiment, automatic generation reactive power compensation Adjusted Option, fault solution etc. improve the task performance of reactive power compensator further, thus effectively reduce transformer loss and line loss, realize the managing power consumption to transformer and circuit.
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (5)
1. an intelligence connection reactive power compensator, it is characterized in that: comprise intelligence connection the control of reactive power compensating instrument and the first intelligence connection capacitor, second intelligence connection capacitor, 3rd intelligence connection capacitor, isolating switch, current transformer, the input of described first intelligence connection capacitor, the input of the second intelligence connection capacitor, be electrically connected with three-phase electricity by isolating switch after the input parallel connection of the 3rd intelligence connection capacitor, first communication terminal of described first intelligence connection capacitor is connected with the first communication terminal that described second intelligence joins capacitor, second communication terminal of described second intelligence connection capacitor is connected with the first communication terminal that described 3rd intelligence joins capacitor, second communication terminal of the 3rd intelligence connection capacitor is electrically connected with the RS485 interface that intelligence joins the control of reactive power compensating instrument, described current transformer is disposed in three-phase electricity, output and the described intelligence of described current transformer join the control of reactive power compensating instrument and are electrically connected, described intelligence connection the control of reactive power compensating instrument comprises power module, AC sampling module, communication module, ARM control unit, clock module, human-computer interaction module and data memory module, described communication module is electrically connected with Ethernet interface, WIFI interface, RS485 interface, USB interface and GPRS interface, the input of described power module is connected with three-phase electricity, described AC sampling module, communication module and ARM control unit are powered by described power module outlet, the voltage sample input of described AC sampling module is also connected with the output of described power module, the current sample input of described AC sampling module is electrically connected with the output of current transformer, the output of described AC sampling module is electrically connected with described ARM control unit, described ARM control unit is electrically connected with described communication module, described ARM control unit also respectively with the input of clock module, the input of human-computer interaction module and data memory module electrical connection, described RS485 interface comprises the RS485 interface connecting intelligence connection capacitor and the RS485 interface connecing peripheral hardware, the RS485 interface of described connection intelligence connection capacitor is all electrically connected with described communication module with the RS485 interface connecing peripheral hardware.
2. intelligence connection reactive power compensator according to claim 1, it is characterized in that: described AC sampling module is DSP alternating current sampling circuit, described DSP alternating current sampling circuit is connected with described ARM control unit by UART bus.
3. intelligence connection reactive power compensator according to claim 2, it is characterized in that: described communication module is STM8S207R8T6 chip circuit, described RS485 interface comprises MAX13085 chip, resistance R8, resistance R9, resistance R11, resistance R12 and electric capacity C5, the RO end of described MAX13085 chip is held with the PA4 of described STM8S207R8T6 chip and is connected, described MAX13085 chip /RE with DE end all holds with the PA6 of described STM8S207R8T6 chip and is connected, described MAX13085 chip /RE and DE holds also by resistance R11 ground connection, the DI end of described MAX13085 chip is held with the PA5 of described STM8S207R8T6 chip and is connected, the VCC termination power of described MAX13085 chip, the VCC end of described MAX13085 chip is by electric capacity C5 ground connection, the A port of described MAX13085 chip connects power supply by resistance R8, the A port of described MAX13085 chip connects intelligence connection capacitor, the GND of described MAX13085 chip holds ground connection, the B port of described MAX13085 chip connects power supply by resistance R12, the B port of described MAX13085 chip connects peripheral hardware, resistance R9 is connected with between the B port of described MAX13085 chip and the A port of MAX13085 chip.
4. intelligence connection reactive power compensator according to claim 2, it is characterized in that: described first intelligence connection capacitor, second intelligence connection capacitor and the 3rd intelligence connection capacitor include Chip Microcomputer A 1, human-computer interaction device A2, three-phase type low voltage power capacitor group, operating passing zero K switch D, current transformer TA, temperature sensor RT and circuit breaker Q F, one end of described operating passing zero K switch D is connected with three-phase electricity by circuit breaker Q F, the other end of described operating passing zero K switch D runs through current transformer TA and is connected with three-phase type low voltage power capacitor group, the control end of described operating passing zero K switch D is electrically connected with described Chip Microcomputer A 1, the output of described current transformer TA is electrically connected with described Chip Microcomputer A 1, described human-computer interaction device A2 is electrically connected with described Chip Microcomputer A 1, temperature sensor RT test side monitoring three-phase type low voltage power capacitor group, the output of temperature sensor RT is electrically connected with described Chip Microcomputer A 1, described Chip Microcomputer A 1 is electrically connected with communication module by RS485 bus.
5. intelligence connection reactive power compensator according to claim 4, is characterized in that: the first intelligence connection capacitor, the second intelligence connection capacitor and the 3rd intelligence connection capacitor are all equipped with voltage indicator lamp.
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| CN201510078394.7A CN105529723A (en) | 2015-02-13 | 2015-02-13 | Intelligent reactive compensation device |
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| CN201510078394.7A CN105529723A (en) | 2015-02-13 | 2015-02-13 | Intelligent reactive compensation device |
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| CN110224412A (en) * | 2019-05-21 | 2019-09-10 | 江苏斯菲尔电气股份有限公司 | The low voltage reactive compensation cabinet that initiative alarming uploads |
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Application publication date: 20160427 |