CN201629565U - Switch cabinet arc light protection system with compact structure - Google Patents

Switch cabinet arc light protection system with compact structure Download PDF

Info

Publication number
CN201629565U
CN201629565U CN2010201110468U CN201020111046U CN201629565U CN 201629565 U CN201629565 U CN 201629565U CN 2010201110468 U CN2010201110468 U CN 2010201110468U CN 201020111046 U CN201020111046 U CN 201020111046U CN 201629565 U CN201629565 U CN 201629565U
Authority
CN
China
Prior art keywords
protection system
current signal
casing
power supply
processing unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010201110468U
Other languages
Chinese (zh)
Inventor
渠永超
高丽琴
禹江
刘辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAODING TIANWEI HENGTONG ELECTRIC Co Ltd
Original Assignee
BAODING TIANWEI HENGTONG ELECTRIC Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BAODING TIANWEI HENGTONG ELECTRIC Co Ltd filed Critical BAODING TIANWEI HENGTONG ELECTRIC Co Ltd
Priority to CN2010201110468U priority Critical patent/CN201629565U/en
Application granted granted Critical
Publication of CN201629565U publication Critical patent/CN201629565U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Abstract

A switch cabinet arc light protection system with a compact structure is mainly used for solving the problem of integration of an arc light protection system. The technical scheme includes that the protection system comprises a main control unit, an arc light probe and an optical fiber. The main control unit comprises a casing and a monitoring circuit mounted therein, and a photoelectric converter, a current signal terminal, a trip signal terminal and a power supply terminal are arranged on the casing, connected with the monitoring circuit and all fixed onto a rear wall plate of the casing. The arc light probe is mounted on a partition board of a bus chamber of a switch cabinet, an output end of the arc light probe is connected with an input end of the photoelectric converter via the plastic optical fiber, and the current signal terminal is externally connected with a current transformer. The protection system with a compact structure greatly reduces wire connection failure among units, eliminates interference from external powerful electromagnetic field, is capable of effectively preventing incorrect acting or acting rejection of devices, and greatly improves reliability of the integral protection system.

Description

The switch cubicle arclight protection system of compact conformation
Technical field
The utility model relates to a kind of improved mesolow switch cubicle arclight protection system, belongs to the resist technology field.
Background technology
The inner arc fault of switch cubicle is a kind of very serious short trouble in the distribution system, if do not take to monitor timely and effectively and safeguard measure, tends to cause serious economy loss.Therefore, arclight monitoring and protection system need be installed all in switch cubicle, further spread to prevent the arclight fault.
Existing mesolow switch cubicle arclight protection system is judged arc fault according to overcurrent and the dual criterion of arclight, generally is made up of a plurality of split type functional units such as arc probe, arc optical signal processing unit, current transformer, current signal processing unit, control unit, accessory power supplys.Annexation between each separate unit as shown in Figure 1, the arc optical signal processing unit is connected with arc probe by plastic fiber, its receives the detected arc optical signal of arc probe and by communication optical fiber and data cable this signal is transferred to control unit; The current signal processing unit directly is connected with current transformer terminal on the switch cubicle by cable, is used for detecting constantly A, B, C three-phase overcurrent signal, and detected overcurrent signal is transferred to control unit by communication optical fiber and data cable; The input of accessory power supply is connected with on-the-spot AC power, and it converts field power supply to DC12V, is the control unit power supply by cable then; Control unit management, the whole arclight protection system of control; the arc optical signal that fault current signal that its received current signal processing unit transmits and arc optical signal processing unit transmit is also handled to the received signal, is judged; when satisfying trip condition, send trip command, with the excision arc fault.
Because a plurality of functional units are independently of one another; optical fiber, number of cables between them are more; and be exposed in the switch cubicle compartment; thereby occur easily becoming flexible, come off, by phenomenons such as worm, damaged by rats are disconnected; communication cable and each functional unit are easy to be interfered in the strong-electromagnetic field environment; cause error action of device or tripping, this just greatly reduces the reliability of whole protecting system.
The utility model content
The purpose of this utility model is the switch cubicle arclight protection system of the compact conformation that overcomes the deficiencies in the prior art, a kind of high reliability is provided.
Problem described in the utility model realizes with following technical proposals:
A kind of switch cubicle arclight protection system of compact conformation, it is made up of main control unit, arc probe and optical fiber, described main control unit is made up of casing and installation supervisory circuit within it, described casing is provided with optical-electrical converter, current signal terminal, trip signal terminal and the power supply terminal that is connected with supervisory circuit, and described trip signal terminal, power supply terminal, optical-electrical converter, current signal terminal all are fixed on the squab panel of casing; Described arc probe is installed on the dividing plate of switch cubicle bus-bar room, and its output connects the input of optical-electrical converter, current transformer in the described current signal terminal outside connected switch cabinet through plastic fiber.
The switch cubicle arclight protection system of said structure compactness, described supervisory circuit is made up of current signal processing unit, arc optical signal processing unit, single-chip microcomputer, relay and accessory power supply, the input of described current signal processing unit is connected with current signal terminal on the casing, output connects the input of single-chip microcomputer, the output of the input termination optical-electrical converter of described arc optical signal processing unit, the input of the described accessory power supply power supply terminal on the shell of meeting sb. at the airport; Described current signal processing unit, arc optical signal processing unit, single-chip microcomputer, relay and accessory power supply are installed on the interior circuit board of casing; The control coil of described relay connects the output of single-chip microcomputer, and the contact connects the trip signal terminal.
The utility model all is installed on current signal processing unit, arc optical signal processing unit, single-chip microcomputer, relay and accessory power supply on the circuit board in the casing of main control unit, the transmission of signal between each unit adopts basically that fixedly connected mode realizes on the device internal circuit board, not only significantly reduced the line fault between each unit, and simplified on-the-spot wiring process, reduced the on-site installation work amount.The casing of main control unit can effectively shield the interference of outside strong-electromagnetic field to inner each unit, prevents error action of device or tripping, has improved the reliability of whole protecting system greatly.
Description of drawings,
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the composition and the connection diagram of traditional electrical arc light protection system;
Fig. 2 is a structured flowchart of the present utility model;
Fig. 3 is the layout plan of inner each unit of main control unit.
Each label is among the figure: 1, casing; 2, arc optical signal processing unit; 3, current signal processing unit; 4, single-chip microcomputer; 5, relay; 6, accessory power supply; 7, trip signal terminal; 8, power supply terminal; 9, current signal terminal; 10, optical-electrical converter.
Embodiment
Referring to Fig. 2, Fig. 3, the utility model product is made up of main control unit, arc probe and optical fiber three parts.Main control unit fits together a plurality of split type unit of traditional electrical arc light protection system, has all functions of split type each unit.
The main control unit input voltage is DC110V/AC220V, and 8 direct connections with the field power supply terminal of power supply terminal get final product.The AC220V power supply is inserted by power supply terminal, changes direct voltage into through accessory power supply 6 (being made of miniature transformer and rectification circuit), gives single-chip microcomputer 4, current signal processing unit 3,2 power supplies of arc optical signal processing unit.
Main control unit current signal terminal 9 can directly link to each other with the current transformer terminal by cable, and the current signal that current signal processing unit 3 is gathered need not to carry out complicated processing can send into single-chip microcomputer 4.
Optical-electrical converter 10 directly is connected with arc probe by optical fiber, monitors the arclight signal constantly.Electric arc optical signals optical-electrical converter 10 enters into single-chip microcomputer 4 through arc optical signal processing unit 2.
Main control unit will be from the over-current signal of current transformer and the arclight signal synthesis processing controls relay trip(ping) circuit of arc probe collection.

Claims (2)

1. the switch cubicle arclight protection system of a compact conformation, it is characterized in that, it is made up of main control unit, arc probe and optical fiber, described main control unit is made up of casing (1) and installation supervisory circuit within it, described casing (1) is provided with optical-electrical converter (10), current signal terminal (9), trip signal terminal (7) and the power supply terminal (8) that is connected with supervisory circuit, and described trip signal terminal, power supply terminal, optical-electrical converter, current signal terminal all are fixed on the squab panel of casing; Described arc probe is installed on the dividing plate of switch cubicle bus-bar room, and its output connects the input of optical-electrical converter (10), current transformer in described current signal terminal (9) the outside connected switch cabinet through plastic fiber.
2. according to the switch cubicle arclight protection system of the described compact conformation of claim 1, it is characterized in that, described supervisory circuit is by current signal processing unit (3), arc optical signal processing unit (2), single-chip microcomputer (4), relay (5) and accessory power supply (6) are formed, the input of described current signal processing unit (3) is connected with current signal terminal (9) on the casing, output connects the input of single-chip microcomputer (4), the output of the input termination optical-electrical converter (10) of described arc optical signal processing unit (2), the input of described accessory power supply (6) power supply terminal (8) on the shell (1) of meeting sb. at the airport; Described current signal processing unit, arc optical signal processing unit, single-chip microcomputer, relay and accessory power supply are installed on the interior circuit board of casing; The control coil of described relay (5) connects the output of single-chip microcomputer (4), and the contact connects trip signal terminal (7).
CN2010201110468U 2010-02-10 2010-02-10 Switch cabinet arc light protection system with compact structure Expired - Fee Related CN201629565U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201110468U CN201629565U (en) 2010-02-10 2010-02-10 Switch cabinet arc light protection system with compact structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201110468U CN201629565U (en) 2010-02-10 2010-02-10 Switch cabinet arc light protection system with compact structure

Publications (1)

Publication Number Publication Date
CN201629565U true CN201629565U (en) 2010-11-10

Family

ID=43060964

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201110468U Expired - Fee Related CN201629565U (en) 2010-02-10 2010-02-10 Switch cabinet arc light protection system with compact structure

Country Status (1)

Country Link
CN (1) CN201629565U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103248017A (en) * 2013-05-15 2013-08-14 南京弘毅电气自动化有限公司 100-percent fast protection system and method for internal fault of switch cabinet
CN103441473A (en) * 2013-08-14 2013-12-11 合肥天海电气技术有限公司 Arc light protection system suitable for single-bus section

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103248017A (en) * 2013-05-15 2013-08-14 南京弘毅电气自动化有限公司 100-percent fast protection system and method for internal fault of switch cabinet
CN103248017B (en) * 2013-05-15 2015-12-23 南京弘毅电气自动化有限公司 Internal faults of switch cabinet 100% rapid protection system and guard method
CN103441473A (en) * 2013-08-14 2013-12-11 合肥天海电气技术有限公司 Arc light protection system suitable for single-bus section
CN103441473B (en) * 2013-08-14 2016-03-30 合肥天海电气技术有限公司 A kind of arc light protecting system being applicable to single mother partition

Similar Documents

Publication Publication Date Title
CN102664465B (en) Breaker controller with dual-power-source switching function, switching system and switching method
CN202276194U (en) Online medium voltage switch cabinet monitoring device
CN202495807U (en) Remote centralized measurement and control system for power distribution network
CN201414021Y (en) Intelligent power distribution system for telecommunication room
CN202142911U (en) An intelligent monitoring module and a distributed distribution terminal having the intelligent monitoring module
CN101969191B (en) Optical fiber blocking override-avoiding tripping system
CN202231318U (en) Multifunctional low voltage distribution box
CN109936057B (en) Intelligent integrated power supply and control system thereof
CN111146755A (en) Feeder terminal and line protection device
CN103545926A (en) Distributed power supply grid connection interface device
CN215419735U (en) Bus duct measurement and control device and bus duct measurement and control system
CN201629565U (en) Switch cabinet arc light protection system with compact structure
CN210867288U (en) Electricity charge control system
CN201616666U (en) Multifunctional short circuit protecting system of middle and low-voltage switch cabinet
CN201774313U (en) Process layer combining unit
CN202696279U (en) Circuit breaker controller with dual-power changeover function and dual-power switching system
CN203645406U (en) Intelligent distribution monitoring cabinet
CN206557299U (en) A kind of emergency power supply Quick access device with decompression timing
CN201829937U (en) Fiber-locking override-trip preventive system
CN201887554U (en) Intelligent transformer monitoring system
CN201608563U (en) Electric arc light intelligent remote monitoring system
CN201608515U (en) Electric arc light protecting system for feeder cable in switch cabinet
CN104682554A (en) Intelligent power distribution monitoring cabinet
CN201611775U (en) Arc light monitoring and protecting device for bus compartment
CN203537070U (en) Distributed power supply grid connection interface device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101110

Termination date: 20160210

CF01 Termination of patent right due to non-payment of annual fee