CN102998627A - Remote intelligent maintaining device of transformer substation storage battery - Google Patents
Remote intelligent maintaining device of transformer substation storage battery Download PDFInfo
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- CN102998627A CN102998627A CN2012105586778A CN201210558677A CN102998627A CN 102998627 A CN102998627 A CN 102998627A CN 2012105586778 A CN2012105586778 A CN 2012105586778A CN 201210558677 A CN201210558677 A CN 201210558677A CN 102998627 A CN102998627 A CN 102998627A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a device for testing electrical performance in a transformer substation of an electric power system, and particularly discloses a remote intelligent maintaining device of a transformer substation storage battery. The remote intelligent maintaining device comprises an upper managing machine and five loops composed of a microprocessor, a voltage transducer, a signal conditioning circuit, a power driving circuit, a photo-coupling circuit, an insulated gate bipolar translator (IGBT) tube and a positive temperature coefficient (PTC) resistor. After adopting the structure, the storage battery remote control volume is tested and remote maintenance is performed by utilizing an existing computer technology and a real-time Ethernet communication technology and combining the five loops. By means of arrangement, safe constant current discharge can be achieved, data acquisition is real-time and quick, remote automatic control of storage battery volume testing is achieved, field operation is not required, checking discharge work can be carried out to multiple transformer substations at the same time, fatigue caused by arriving and departing a field is avoided, a large amount of manpower and material resources are saved, and the work efficiency is greatly improved.
Description
Technical field
The present invention relates to the proving installation of the electrical property in a kind of power system transformer substation, specifically a kind of storage batteries of transformer substation remote and intelligent maintenance device.
Background technology
Transformer station's digitized degree is more and more higher at present; and domestic most transformer station has realized unmanned; DC power system directly provides basic driving source for the interior automation equipment of standing; accumulator is again last one safety curtain of whole DC power system; once go wrong, the thing followed is that malfunctioning, the switch failure of protection, passage interrupt ... consequence is hardly imaginable.The great electric power accident caused because of the accumulator problem in recent years happens occasionally, and causes great economic loss.Due to complicacy and the invisibility of accumulator internal performance, accumulator is always emphasis and the difficult point of power-source maintenance work; Up to the present, except the property checked volume test, being difficult to a kind of method can carry out comprehensively qualitative, quantitative test and maintenance to accumulator property.
In early days, to accumulator capacity, test adopts variable resistance box, voltage and current table manually to complete, and wastes time and energy, and the image data real-time is poor, and can't realize constant-current discharge; Along with scientific and technological development, the Intelligent discharge load has appearred, constant-current discharge, realized the automatic control of discharge process, and the property checked volume test test is a a progressive step; But it must execute-in-place, and along with the fast development of electric system, increasing of transformer station's quantity is difficult to utilize intelligent load to require the regularly property the checked volume test of accumulator according to rules under the condition of limited manpower and materials.Due to the existence of above difficulty, a lot of units seldom carry out volume test to accumulator, even do not do the capacity check test, and this buries huge hidden danger with regard to the safe operation of giving electric system.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind ofly can realize constant-current discharge, fast real-time data acquisition, far-end are controlled the accumulator remote and intelligent maintenance device without execute-in-place.
In order to solve the problems of the technologies described above, accumulator remote and intelligent maintenance device of the present invention, comprise upper managing computer and the five large loops that consist of microprocessor, voltage sensor, signal conditioning circuit, power driving circuit, photoelectric coupling circuit, IGBT pipe and PTC resistance;
Described battery positive voltage to be measured connects an end of PTC resistance through current transducer, the other end of PTC resistance connects the C utmost point of IGBT pipe, and the E utmost point of IGBT pipe is connected to battery terminal negative to be measured and forms the volume test major loop;
Described voltage sensor one secondary input end is parallel to the accumulator to be measured two ends utmost point, the output of voltage sensor secondary singal connects the in-phase input end of signal conditioning circuit, and the A/D input pin that the output terminal of signal conditioning circuit connects microprocessor forms the voltage sample loop;
Described current sensor punching is connected with PTC resistance in battery positive voltage to be measured, and its secondary singal output connects the in-phase input end of signal conditioning circuit, and another A/D input pin that the output terminal of signal conditioning circuit connects microprocessor forms current sampling circuit;
I/O pin of described microprocessor and the input of power driving circuit are connected, and the output of power driving circuit is connected with the input of photoelectric coupling circuit, and the control G utmost point that the output of photoelectric coupling circuit connects the IGBT pipe forms the load regulation control loop;
The RXIP of described microprocessor, RXIN, TX0P, TX0N pin interconnection network transformer/RJ45 interface circuit form order circuit;
Described order circuit carries out communication by Ethernet and upper managing computer, accepts telecommand, uploads telemetry.
After adopting above-mentioned structure, due to the upper managing computer arranged and and by microprocessor, voltage sensor, signal conditioning circuit, power driving circuit, photoelectric coupling circuit, the five large loops that IGBT pipe and PTC resistance form, order circuit in five large loops carries out communication by Ethernet and upper managing computer simultaneously, accept telecommand, upload telemetry, utilized thus existing computer technology, the real-time ethernet communication technology in conjunction with five large loops to accumulator remote control volume test, carry out remote maintenance, can realize safe constant-current discharge by of the present invention the setting, image data real-time, realized the remote auto control of accumulator capacity test, without execute-in-place, and can carry out the property checked electric discharge work to a plurality of transformer stations simultaneously, avoided the fatigued of round scene, saved a large amount of man power and materials, greatly improved work efficiency.
The accompanying drawing explanation
The theory diagram that Fig. 1 is accumulator remote and intelligent maintenance device of the present invention;
The circuit diagram that Fig. 2 is accumulator remote and intelligent maintenance device of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, accumulator remote and intelligent maintenance device of the present invention is described in further detail.
As shown in Figure 1, accumulator remote and intelligent maintenance device of the present invention, comprise upper managing computer and the five large loops that consist of microprocessor, voltage sensor, current sensor (1), signal conditioning circuit, power driving circuit, photoelectric coupling circuit, IGBT pipe, RJ45 interface circuit and PTC resistance;
Wherein, further it should be noted that upper managing computer of the present invention is a computing machine that the accumulator capacity test monitoring software that utilizes the establishment of VC language has been installed, it is connected on Ethernet, by Ethernet, controls five large loops.More particularly, upper managing computer is to have designed an accumulator capacity test monitoring software vertical application, it is arranged in the computing machine be connected to accordingly on Ethernet, by operation accumulator capacity test monitoring software, intelligent test load to far-end sends telecommand, and receives the telemetry that the intelligent test load is uploaded; So say exactly, the key of upper managing computer is one and packs into and be connected to the accumulator capacity test monitoring software vertical application that utilizes VC language establishment in the computing machine on Ethernet.
The five large loops that formed by microprocessor, signal transmitting, signal condition, power drive, photoelectric coupling, IGBT pipe and PTC ceramic resistor, receive the upper managing computer telecommand by Ethernet, and upload the related datas such as total voltage, discharge current, regulating load automatically, realize constant current output.Described regulating load constant current output is that microprocessor adopts the PWM pulse width modulation mode, by optocoupler, drives IGBT management and control PTC ceramic resistor processed switching to realize.
Microprocessor adopts the LM3S6938 single-chip microcomputer, it be company of Texas Instrument (TI) provide first based on ARM
? cortex
tM32 level controllers of-M3, the in-chip FLASH of 256K, the 64K on-chip SRAM, the A/D converter of 10 of 8 passages, (MAC) and Physical layer (PHY) are controlled in inner integrated 10/100 Ethernet media interviews, meet IEEE 802.3-2002 standard, its advantage has been its compatibility third party's ICP/IP protocol stack, can realize the ethernet terminal nodal function of single-chip; RJ45 interface circuit Adoption Network transformer/RJ45 interface chip, model is: HR911105A; Adopt Hall current sensor to send as the electric current change of signal transmitting part, the model of Hall current sensor is: TBC50A; Adopt electromagnetism modulation voltage sensor as voltage transmission, the model of voltage sensor is: WPE-DV, input 0-300V, output 0-5V; Signal conditioning circuit comprises that voltage amplification and electric current amplify, and all adopt amplifier LM358; Power driving circuit is the MC1413 Darlington transistor, improves driving force; Photoelectric coupling circuit is TLP521-1, the isolation strong and weak electricity; The IGBT pipe adopts the 25N120 of fairchild company, 25A 1200V; PTC resistance has that volume is little, lightweight, power is large, without advantages such as red heat phenomenons.
The each part mentioned above connected mode is as follows:
Battery positive voltage to be measured, through after current transducer TBC50A, connects an end of PTC resistance, and the other end of PTC resistance connects the C utmost point of IGBT pipe 25N120, and the E utmost point of IGBT pipe is connected to battery terminal negative to be measured, and forms the volume test major loop;
Voltage sensor WPE-DV mono-secondary input end is parallel to the accumulator to be measured two ends utmost point, the output of voltage sensor secondary singal connects the in-phase input end of voltage amplifier LM358, and the output terminal of voltage amplifier LM358 connects the A/D input pin of microprocessor LM3S6938 and forms the voltage sample loop;
Current sensor TBC50A punching is connected with the PTC ceramic resistor in battery positive voltage to be measured, its secondary singal output connects the in-phase input end of electric current amplifier LM358, and the output terminal of electric current amplifier LM358 connects another A/D input pin of microprocessor LM3S6938 and forms current sampling circuit;
The I/O pin of microprocessor LM3S6938 is connected with the input of power drive chip MC1413, the output of MC1413 is connected with the input of optocoupler TLP521-1, and the output of TLP521-1 connects the control G utmost point of IGBT pipe 25N120 and forms the load regulation control loop;
The RXIP of microprocessor LM3S6938, RXIN, TX0P, TX0N pin interconnection network transformer/RJ45 interface chip HR911105A, form order circuit, by Ethernet and upper managing computer, carries out communication, accepts telecommand, uploads telemetry.
Control procedure is as follows: microprocessor LM3S6938 passes through network transformer/RJ45 interface HR911105A after Ethernet receives the upper managing computer telecommand, adopt the PWM pulse width modulation mode, I/O mouth by LM3S6938 connects power drive chip MC1413, drive optocoupler TLP521-1, promote IGBT pipe 25N120 by optocoupler again and control PTC ceramic resistor switching, thereby regulate the discharge current of accumulator to be measured, according to the electric power rules, realize current continuity adjusting, constant current output, voltage, current sensor is voltage, the isolation of electric current forceful electric power signal changes 0～5V weak electric signal into and passes to signal conditioning circuit amplifier LM358(two-way, one tunnel voltage amplification, one road electric current amplifies), after LM358 amplifies, pass to respectively two A/D input pins of microprocessor LM3S6938, microprocessor gathers, calculate, arrangement obtains the battery total voltage, the related datas such as discharge current, monitor the variation of above-mentioned data simultaneously, until the discharge off condition protection that has arbitrary data to meet electric power rules regulation is shut down or artificial the termination shut down, and upload battery total voltage by Ethernet to upper managing computer through network transformer/RJ45 interface in real time, the telemetries such as discharge current.
As shown in Figure 2, the GND of LM3S6938 single-chip microcomputer, GNDA, GNDPHY, CMOD0 and CMOD1 are connected with ground wire; VDD, VDDA, VCCPHY connect the 3.3V high level; LDO, VDD25 connect the 2.5V high level.The OSC0 of single-chip microcomputer LM3S6938, OSC1 pin are connected with the end of capacitor C 4, C5 respectively, the other end ground connection of electric capacity, and meet a 8M crystal oscillator M1 between OSC0, OSC1; XTALPPHY, XTALNPHY pin are connected with the end of capacitor C 2, C3 respectively, the other end ground connection of electric capacity, and meet a 25M crystal oscillator M2 make single-chip microcomputer normal operation between XTALPPHY, XTALNPHY.Resistance R 1, R2, R3, R4, and TXCT, the RXCT of network transformer/RJ45 interface HR911105A jointly with the 3.3V power supply, be connected, resistance R 1 other end is connected with the RXIN pin of LM3S6938, the RX-of HR911105A, resistance R 2 other ends are connected with the RXIP pin of LM3S6938, the RX+ of HR911105A, resistance R 3 other ends are connected with the TXON pin of LM3S6938, the TX-of HR911105A, resistance R 4 other ends are connected with the TXOP pin of LM3S6938, the TX+ of HR911105A, the GND ground connection of HR911105A; R1, R2, R3, R4, and HR911105A form ethernet interface circuit, be connected on Ethernet.The RST pin of single-chip microcomputer LM3S6938 is connected with an end of an end of resistance R 11 and capacitor C 1, another termination 3.3V power supply of R11, and the other end ground connection of C1, complete the electrification reset function.The PC4 pin of LM3S6938 is connected with the 1 pin IN that drives chip MC1413, the 9 pin COM of MC1413 are connected with the 12V power supply, the 16 pin OUT of MC1413 are connected with 2 pin of optocoupler TLP521-1, 1 pin of TLP521-1 connects the 12V power supply, 4 pin are connected with+12 power supplys, 3 pin of TLP521-1 extremely are connected with the G of an end of resistance R 5 and IGBT pipe 25N120, the other end ground connection of R5, the E utmost point of 25N120 is connected with mesuring battary "-", the C utmost point of 25N120 connects an end of PTC ceramic resistor, the other end of PTC resistance is connected with mesuring battary "+" through after current transducer TBC50A, PTC resistance, IGBT, TLP521-1, MC1413, R5, R6 forms volume test major loop and control circuit thereof together.WPE-DV mono-secondary input end U+ is connected with mesuring battary "+", U-is connected with mesuring battary "-", voltage sensor+the E pin meets 12V, GND pin ground connection, signal output part Us connects the end of R8, the other end of resistance R 8 is connected with 3 pin of AMP1, one end ground connection of resistance R 7, the other end is connected with 2 pin of AMP1 amplifier LM358 and 1 pin of potentiometer W1,2,3 pin of potentiometer W1 are connected with 1 pin of AMP1 and the ADC0 pin of LM3S6938, and WPE-DV, R7, R8, W1 and AMP1 form together the voltage signal change and send modulate circuit.Current sensor TBC50A punching is in accumulator to be measured "+" and PTC ceramic resistor connecting line, TBC50A +the E pin meets 12V, connect-12V of-E pin, GND pin ground connection, the end of signal output part Uz contact resistance R10, the other end of R10 is connected with 3 pin of AMP2 amplifier LM358, one end ground connection of resistance R 9, the other end is connected with 2 pin of AMP2 and 1 pin of potentiometer W2,2,3 pin of potentiometer W2 are connected with 1 pin of AMP2 and the ADC1 pin of LM3S6938, and TBC50A, R9, R10, W2 and AMP2 form together the current signal change and send modulate circuit.
Claims (1)
1. an accumulator remote and intelligent maintenance device, is characterized in that: comprise upper managing computer and the five large loops that consist of microprocessor, voltage sensor, signal conditioning circuit, power driving circuit, photoelectric coupling circuit, IGBT pipe and PTC resistance;
Described battery positive voltage to be measured connects an end of PTC resistance through current transducer, the other end of PTC resistance connects the C utmost point of IGBT pipe, and the E utmost point of IGBT pipe is connected to battery terminal negative to be measured and forms the volume test major loop;
Described voltage sensor (1) one secondary input end is parallel to the accumulator to be measured two ends utmost point, the output of voltage sensor secondary singal connects the in-phase input end of signal conditioning circuit, and the A/D input pin that the output terminal of signal conditioning circuit connects microprocessor forms the voltage sample loop;
Described current sensor punching is connected with PTC resistance in battery positive voltage to be measured, and its secondary singal output connects the in-phase input end of signal conditioning circuit, and another A/D input pin that the output terminal of signal conditioning circuit connects microprocessor forms current sampling circuit;
I/O pin of described microprocessor and the input of power driving circuit are connected, and the output of power driving circuit is connected with the input of photoelectric coupling circuit, and the control G utmost point that the output of photoelectric coupling circuit connects the IGBT pipe forms the load regulation control loop;
The RXIP of described microprocessor, RXIN, TX0P, TX0N pin interconnection network transformer/RJ45 interface circuit form order circuit;
Described order circuit carries out communication by Ethernet and upper managing computer, accepts telecommand, uploads telemetry.
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| CN2012105586778A CN102998627A (en) | 2012-12-21 | 2012-12-21 | Remote intelligent maintaining device of transformer substation storage battery |
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| CN2012105586778A CN102998627A (en) | 2012-12-21 | 2012-12-21 | Remote intelligent maintaining device of transformer substation storage battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308862A (en) * | 2013-06-04 | 2013-09-18 | 安徽省电力公司阜阳供电公司 | Remote intelligent transformer substation storage battery charge and discharge and residual capacity monitoring device |
| CN105466032A (en) * | 2015-12-21 | 2016-04-06 | 上海奉天电子股份有限公司 | Positive temperature coefficient (PTC) water heater over-current detection software and hardware dual protection circuit |
| CN107132483A (en) * | 2017-04-28 | 2017-09-05 | 广东电网有限责任公司珠海供电局 | Storage batteries of transformer substation departs from dc bus monitoring system |
| CN107579569A (en) * | 2017-09-28 | 2018-01-12 | 国网上海市电力公司 | A kind of storage batteries of transformer substation group charge-discharge control system based on capacity monitoring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308862A (en) * | 2013-06-04 | 2013-09-18 | 安徽省电力公司阜阳供电公司 | Remote intelligent transformer substation storage battery charge and discharge and residual capacity monitoring device |
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| CN107132483A (en) * | 2017-04-28 | 2017-09-05 | 广东电网有限责任公司珠海供电局 | Storage batteries of transformer substation departs from dc bus monitoring system |
| CN107579569A (en) * | 2017-09-28 | 2018-01-12 | 国网上海市电力公司 | A kind of storage batteries of transformer substation group charge-discharge control system based on capacity monitoring |
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Application publication date: 20130327 |