CN203589714U - Feeder-line-type electric arc light protection device - Google Patents

Feeder-line-type electric arc light protection device Download PDF

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Publication number
CN203589714U
CN203589714U CN201320753886.8U CN201320753886U CN203589714U CN 203589714 U CN203589714 U CN 203589714U CN 201320753886 U CN201320753886 U CN 201320753886U CN 203589714 U CN203589714 U CN 203589714U
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China
Prior art keywords
arc light
card
cpu
plate
chip
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CN201320753886.8U
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Chinese (zh)
Inventor
黄华林
马继春
黄婷婷
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CHENGDU GONGBAILI AUTOMATION EQUIPMENT Co Ltd
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CHENGDU GONGBAILI AUTOMATION EQUIPMENT Co Ltd
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Abstract

The utility model provides a feeder-line-type electric arc light protection device and relates to the electric power industry distribution system relay protection field. The device comprises a box body, a display panel, a PCB in the box body and a feeder line protection unit. The PCB is provided with a switch chip, a motherboard of a network interface, an arc light acquisition plug-in plate, a current plug-in plate, a CPU plug-in plate, a power supply and a trip-out plug-in plate. General CPU small plates are arranged on the arc light acquisition plug-in plate, the current plug-in plate and the CPU plug-in plate. Each CPU small plate is formed by a DSP chip, an Ethernet communication module, a random access memory RAM and Flash and is connected with the arc light acquisition plug-in plate, the current plug-in plate and the CPU plug-in plate through a data bus respectively. The motherboard is connected with and communicated with the arc light acquisition plug-in plate, the current plug-in plate, the CPU plug-in plate, the power supply and the trip-out plug-in plate through the switch chip and the network interface which are arranged on the motherboard so that data processing and network access are completed. The device of the utility model possesses current and arc light sensor signal acquisition, trip-out and signal output capabilities so that a problem that the feeder line has no arc light protection is solved.

Description

Feeder line type arc light protective device
Technical field
The utility model relates to power industry distribution system relaying protection field, especially a kind of feeder line type arc light protective device.
Background technology
In electric power system, the protection of distribution link concentrates on protection for feed line, and it is fast that excision that it is generally acknowledged feeder fault is not strict with.Different power distribution networks requires different to load power supply reliability with power supply quality.Many power distribution networks are only to consider that line fault is on the impact of electricity sales amount and the impact in controller switching equipment life-span, not yet using distribution network failure to the negative effect of electric load (user) object as distribution protection.Along with China's expanding economy; the dependence of power consumer electricity consumption is more and more stronger; power supply reliability and the power supply quality of power supply become the focus of power distribution network; and the Main Function of distribution feeder protection also becomes raising power supply reliability and improve the quality of power supply, specifically comprises feeder fault excision, Fault Isolation and restores electricity.Common protection for feed line mode has the protection for feed line of overcurrent protection, automatic circuit mode.Overcurrent protection: when feeder fault, whole piece circuit is cut away, do not consider that these are unfavorable for improving power supply reliability to the restoring electricity of non-fault zone.On the other hand, because Time-Dependent time delay realizes the selectivity of protecting, cause the mute time of some fault partially long, affect equipment life.The protection for feed line of current automatic circuit mode: this simple and effective mode can improve power supply reliability, has larger advantage with respect to traditional current protection.The shortcoming of this scheme is that the time of Fault Isolation is longer, repeatedly overlaps relevant load is had to certain influence.The domestic and international Microcomputer Protection for feeder line does not much possess the function of arc light detecting at present, and the protection for arc fault is mainly again that feeder line does not have special arc protection for middle voltage bus bar specially.
Utility model content
The purpose of this utility model is to provide a kind of feeder line type arc light protecting device, makes it to have collection, tripping operation and the signal fan-out capability of electric current and arc photosensor signal, solves feeder line without the problem of arc protection.
It is such realizing technical solution of the present utility model: a kind of feeder line type arc light protective device, comprise pcb board in casing and display floater, casing and protection for feed line unit independently, pcb board in described casing comprises the motherboard that is provided with exchanger chip, network interface, arc light gathers card, electric current card, CPU card plate, power supply and tripping operation card; Described arc light gathers card, electric current card, on CPU card plate, be equipped with universal cpu platelet, described universal cpu platelet consists of dsp chip, ethernet communication module and random access memory ram, Flash, by data/address bus, gather card with arc light respectively, electric current card, CPU card plate connects; The exchanger chip that described motherboard is provided with by it, network interface are connected communication with arc light collection card, electric current card, CPU card plate, power supply with tripping operation card, complete data processing and network insertion.
Described feeder line type arc light protective device, the dsp chip on its universal cpu platelet adopts TMS320F2812, and ethernet communication chip adopts DM9000.
Further, described feeder line type arc light protective device, its arc light card comprises 12 road arc photosensor interface circuits, arc light anti-jamming circuit, an A /d conversion chip, the first universal cpu platelet 1.Wherein arc light anti-jamming circuit is comprised of filter circuit and protective circuit, linear optical coupling HCNR201, two-stage follow circuit LM2904.
Further, described feeder line type arc light protective device, its electric current card comprises electric current anti-jamming circuit, the 2nd A that 6 road current transducers, protective circuit and filter circuit form /d conversion chip, the second universal cpu platelet 2.
Further, described feeder line type arc light protective device, its CPU card plate comprises that fpga chip or CPLD chip, IRIG-B code input module, RS485 communication interface, alarm output interface, the 3rd universal cpu platelet 3 form.
Further, described feeder line type arc light protective device, described in it, power supply and tripping operation card comprise installation's power source module, output anti-jamming circuit, 4 tunnel tripping operation output relays, cpu chip STM32F107, network interface chip DM9161.
Further; described feeder line type arc light protective device, described in it, feeder unit comprises that 4 road electric current input interface circuits, current transformer, protection and filter circuit, 4 road arc photosensor input interface circuits, filtering and protective circuit, photoelectric isolating circuit, two-stage follow circuit, the 3rd A/D conversion chip, the 4th universal cpu platelet 4, programmable logic device (CPLD) XC9572,4 tunnel tripping operation output circuits, RS485 communication module, exchanger chip form.
Design principle of the present utility model is that arc photosensor converts arc optical signal to current signal and sends the processing of AD chip to through amplification, Isolation.Current signal arrives AD chip through filtering again and processes.Signal after AD processes is directly delivered to CPU and is processed.The logic that CPU and daemon software set judges that output the corresponding command is to trip unit.FPGA or CPLD assist the processing of the complete paired data of CPU.Ethernet communication module generator and compunlcation, can be realized logic control is modified and edited by daemon software on computers, realizes intelligent, automation remote control.
The beneficial effects of the utility model are:
1, the utility model protection for feed line can independently form and minimize protection system, and separately protected feeder line, to reduce accident interruption scope, also can be expanded, and forms large-scale protection system.
2, electric arc protection employing detection arc light and electric current are input variable; can be separately as overcurrent protection; pure arc protection, and arc light and overcurrent duplicate protection, have advantages of that principle is simple, reliable in action rapidly, to primary equipment without specific (special) requirements, be adapted to various operational modes.
As follows:
Rating data:
A) rated current: alternating current 5A or 1A; Rated frequency: 50Hz;
B) thermal stability: alternating current loop:
Long-time running 2In
10s 20In
1s 40In
Arc light illumination photometry scope:
A) arc light illumination (natural daylight): 500Lux~20kLux;
B) arc light illumination (ultraviolet light): 0.1 ~ 1.999 * 10 5μ w/cm 2;
A) alternating current loop: every 1VA that is not more than mutually during In=5A; Every 0.5VA that is not more than mutually during In=1A;
B) protection power source loop: while normally working, be not more than 10W; During protection action, be not more than 15W.
Accompanying drawing explanation
Fig. 1 is the utility model structured flowchart schematic diagram.
Fig. 2 is described universal cpu platelet structure schematic diagram.
Fig. 3 is an embodiment of this device.
Embodiment
Shown in Fig. 1, Fig. 2, a kind of feeder line type arc light protective device, comprise pcb board and protection for feed line unit in casing and display floater, casing, described pcb board comprises the motherboard that is provided with exchanger chip IP178CH, network interface, arc light gathers card, electric current card, CPU card plate, power supply and tripping operation card; Described arc light gathers card, electric current card, on CPU card plate, be equipped with universal cpu platelet, universal cpu platelet circuit is a general CPU board on device, electric current card, arc light gather card, CPU card plate all needs to install the general CPU platelet described in, as the use of data processing and network service.Universal cpu platelet consists of dsp chip ethernet communication module and random access memory ram, Flash, by data/address bus, gathers card respectively with arc light, electric current card, and CPU card plate connects; The exchanger chip that described motherboard is provided with by it, network interface and arc light gather card, electric current card, and CPU card plate, power supply is connected communication with tripping operation card, completes data processing and network insertion.Dsp chip on its universal cpu platelet adopts TMS320F2812, and ethernet communication chip adopts DM9000AEP.
Described feeder line type arc light protective device arc light gathers card, and its arc light gathers card and comprises 12 road arc photosensor interface circuits, arc light anti-jamming circuit, an A /the first universal cpu platelet 1 that D conversion chip AD7490BRU, dsp chip, network chip, random access memory ram, Flash form.Wherein arc light anti-jamming circuit is comprised of filter circuit, protective circuit, buffer circuit, two-stage follow circuit LM2904.Arc photosensor transmits the signal of telecommunication and comes in to be overvoltage protection, through photoelectricity isolation, again by two-stage follow circuit, to increase input impedance, send into DSP carry out data processing through AD conversion through a series of filter circuit, protective circuit.
Described feeder line type arc light protective device current acquisition card, its electric current card comprises 6 road current transducers, electric current anti-jamming circuit, the 2nd A /the second universal cpu platelet 2 that D conversion chip AD7490BRU, dsp chip, network chip, random access memory ram, Flash form; Wherein electric current anti-jamming circuit consists of protective circuit and filter circuit.The current signal that gathered by current transformer is that filter circuit, protective circuit are that overvoltage protection is given DSP and processed through a series of electric current anti-interference process.DSP is connected with network interface chip DM9000AEP simultaneously, realizes network service.
Described feeder line type arc light protective device CPU card plate, its CPU card plate comprises fpga chip and CPLD chip, IRIG-B code input module, RS485 communication interface, alarm output interface, the 3rd universal cpu platelet 3.Wherein, fpga chip is selected XC3S50AN-TQG144.CPU card plate receives by network the signal that each card sends over, and by computer daemon software set point, provides instruction, controls the corresponding actuating of relay.
The power supply of described feeder line type arc light protective device and tripping operation card comprise installation's power source module, output anti-jamming circuit, 4 tunnel tripping operation output relays, cpu chip STM32F107, network interface chip DM9161.Be mainly the supply module of whole device, be included as each card and display floater power supply and data processing are provided have 4 tripping operation outlets, also subsidiary network communicating function simultaneously.
The protection for feed line unit of described feeder line type arc light protective device comprises that 4 road electric current input interface circuits, current transformer, protection and filter circuit, 4 road arc photosensor input interface circuits, filtering and protective circuit, photoelectric isolating circuit, two-stage follow circuit, the 3rd A/D conversion chip, the 4th universal cpu platelet 4, programmable logic device (CPLD) XC9572,4 tunnel tripping operation output circuits, RS485 communication module, exchanger chip form.The current signal of 4 road arc photosensors inputs after filtering, photoelectricity isolation, again by two-stage follow circuit; increase input impedance; through AD conversion, send into the 4th universal cpu platelet 4; the logic that the arc light of the 4th universal cpu platelet 4 and current signal provide with daemon software after fpga chip or CPLD processing is compared; provide corresponding trip command and complete tripping operation to relay, form protection for feed line unit.The present embodiment is selected 4 road arc photosensors, is arranged on switch cubicle feeder line indoor.What transducer was exported is pulsed current signal, 4 road electric current inputs are electric currents that switch cubicle feeder line chamber current sensor induces, arc photosensor by arc optical signal convert to current signal after filtering, photoelectricity isolation, again by two-stage follow circuit, increase input impedance, through AD conversion, send into the 4th universal cpu platelet 4.
The electric current that 4 road electric current inputs induce through No. 4 current transformers is that filter circuit, protective circuit are that overvoltage protection is sent into the 4th universal cpu platelet 4 after AD conversion through a series of electric current anti-interference process.Send into the logic that the arc light of the 4th universal cpu platelet 4 and current signal provide with daemon software after CPLD processes and compare, provide corresponding trip command and complete tripping operation to relay.Exchanger chip carries out communication by Ethernet and main control unit simultaneously, realizes monitoring, and remote monitoring function is provided.

Claims (7)

1. a feeder line type arc light protective device, comprises pcb board and protection for feed line unit in casing and display floater, casing, and described pcb board comprises the motherboard that is provided with exchanger chip, network interface, arc light gathers card, electric current card, CPU card plate, power supply and tripping operation card; It is characterized in that, described arc light gathers card, and electric current card, is equipped with universal cpu platelet on CPU card plate; Described universal cpu platelet consists of dsp chip, ethernet communication module and random access memory ram, Flash, by data/address bus, gathers card respectively with arc light, electric current card, and CPU card plate connects; The exchanger chip that described motherboard is provided with by it, network interface and arc light gather card, electric current card, and CPU card plate, power supply is connected communication with tripping operation card, completes data processing and network insertion.
2. feeder line type arc light protective device according to claim 1, is characterized in that, the dsp chip on described universal cpu platelet adopts TMS320F2812, and ethernet communication chip adopts DM9000.
3. feeder line type arc light protective device according to claim 1; it is characterized in that, described arc light gathers card and comprises 4-12 road arc photosensor interface circuit, filter circuit and protective circuit, linear optical coupling HCNR201, two-stage follow circuit LM2904, an A /d conversion chip, the first universal cpu platelet (1).
4. feeder line type arc light protective device according to claim 1, is characterized in that, described electric current card comprises 4-6 road current transducer, protective circuit and filter circuit, the 2nd A /d conversion chip, the second universal cpu platelet (2).
5. feeder line type arc light protective device according to claim 1, is characterized in that, described CPU card plate comprises fpga chip or CPLD chip, IRIG-B code input module, RS485 communication interface, alarm output interface, the 3rd universal cpu platelet (3).
6. feeder line type arc light protective device according to claim 1; it is characterized in that, described power supply and tripping operation card comprise installation's power source module, output anti-jamming circuit, 4 tunnel tripping operation output relays, cpu chip STM32F107, network interface chip DM9161.
7. feeder line type arc light protective device according to claim 1; it is characterized in that, described protection for feed line unit comprises that 4 road electric current input interface circuits, current transformer, protection and filter circuit, 4 road arc photosensor input interface circuits, filtering and protective circuit, photoelectric isolating circuit, two-stage follow circuit, the 3rd A/D conversion chip, the 4th universal cpu platelet (4), programmable logic device (CPLD) XC9572,4 tunnel tripping operation output circuits, RS485 communication module, exchanger chip form.
CN201320753886.8U 2013-11-26 2013-11-26 Feeder-line-type electric arc light protection device Active CN203589714U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104332960A (en) * 2014-10-31 2015-02-04 南京因泰莱电器股份有限公司 Intelligent arc light protecting system
CN104377665A (en) * 2014-11-22 2015-02-25 安徽国电京润电力科技有限公司 Arc light protective device
CN104953567A (en) * 2015-07-14 2015-09-30 南京中凯光电技术有限公司 Arc light protection system and method for feed-out circuit in switch cabinet
CN105119247A (en) * 2015-09-18 2015-12-02 成都比善科技开发有限公司 Arc light protection device
CN112305455A (en) * 2020-12-29 2021-02-02 成都工百利自动化设备有限公司 Double-fiber arc light detection sensor based on coded pulse signals

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104332960A (en) * 2014-10-31 2015-02-04 南京因泰莱电器股份有限公司 Intelligent arc light protecting system
CN104377665A (en) * 2014-11-22 2015-02-25 安徽国电京润电力科技有限公司 Arc light protective device
CN104953567A (en) * 2015-07-14 2015-09-30 南京中凯光电技术有限公司 Arc light protection system and method for feed-out circuit in switch cabinet
CN104953567B (en) * 2015-07-14 2017-12-01 南京中凯光电科技股份有限公司 A kind of arc light protection system and method for being used in switch cubicle feed out circuit
CN105119247A (en) * 2015-09-18 2015-12-02 成都比善科技开发有限公司 Arc light protection device
CN105119247B (en) * 2015-09-18 2018-08-14 成都比善科技开发有限公司 Arc light protective device
CN112305455A (en) * 2020-12-29 2021-02-02 成都工百利自动化设备有限公司 Double-fiber arc light detection sensor based on coded pulse signals

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