CN203826933U - Arc light protective device - Google Patents
Arc light protective device Download PDFInfo
- Publication number
- CN203826933U CN203826933U CN201420154343.9U CN201420154343U CN203826933U CN 203826933 U CN203826933 U CN 203826933U CN 201420154343 U CN201420154343 U CN 201420154343U CN 203826933 U CN203826933 U CN 203826933U
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- arc
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- arc light
- arc protection
- rea101
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Abstract
The utility model discloses an arc light protective device which comprises two main arc light protection unit in parallel connection with trip-out outlets. The communication ports of the two main arc light protection unit are connected through a communication cable, and the arc light probe of the main arc light protection unit is arranged in a rectification cabinet. The arc light probe is connected with the main arc light protection unit through fiber, and a current sensor is connected to a primary coil of a rectification transformer and respectively connected to the two main arc light protection unit to send current change signals of the rectification transformer to the main arc light protection unit. The trip-out outlets are connected to a breaker. The arc light protective device timely, rapidly and effectively cuts off the breaker in response to the arc light reaction of the rectification cabinet to protect the rectification cabinet.
Description
Technical field
The utility model relates to a kind of relay protection device, specifically, relates to a kind of arc light protecting device.
Background technology
Arc light protecting system is multiplex in conventional substation; through facts have proved that arc protection can provide the fastest protection in the time of switch cubicle generation arc fault; disengagement failure point; conventional relaying protection can not be compared; it is down to arc light minimum to the infringement of equipment, guarantee the affect minimum of fault power station on electrical network.
Nearly 2 years, frequently there is rectifier cabinet explosion accident in electrolytic aluminium commutation system, and loss is serious, and the normal production of electrolytic aluminium is caused to very large impact.Reverse current protection, arc protection are applied in the protection of commutation system gradually; coordinate GPF (General Protection False to expand the protective surface of commutation system; particularly arc protection because operate time is short, powerful, protection sentence select flexibly, install implement simple, the arc protection of newly-increased commutation system progressively of electrolytic aluminium factory.
The REA arc light protecting system of ABB AB can provide comprehensive protection for the arc fault of transformer station, increases the fail safe of its bus, circuit breaker and switch cubicle, the infringement of equipment is down to minimum, and guarantees the steady safety of electrical network.REA arc light protecting system is specially adapted to low, the medium pressure gas insulated switch cabinet of unit, interval.
The patent document of application number 201320124302.0 discloses a kind of arc light protecting system; this system comprises main control unit, arc probe, current unit, arc light expanding element and arc light unit; this system adopts the star-like connected mode of optical fiber, adopts single mode communications optical cable to connect between main control unit and current unit, main control unit and arc light unit, main control unit and arc light expanding element, arc light unit and arc light expanding element.Between main control unit and arc probe, arc light unit and arc probe, adopt optical cable to connect.
The patent document of application number 200920282798.8 discloses a kind of arc light protecting system, comprises supervisory control system, main control unit, current unit and arc probe; Main control unit is connected with supervisory control system by Ethernet, and current unit is connected respectively with main control unit, and arc probe is connected with main control unit; Main control unit is the core component of arc light protecting system, the light signal that arc probe is transmitted carries out opto-electronic conversion, be responsible for collection, measurement, calculating and the logic judgement of input variable, realize every protection logic of system, communicate by letter with the interior supervisory control system in station, self-inspection and other miscellaneous function; Current unit is arranged in incoming power switch cubicle, gathers current information, and configuration high-speed relay and conventional relay trip or tripping operation nearby on the spot for arc light protecting system; Arc probe is arranged in the interior each interval of cabinet, as photoinduction element, detects the light intensity increasing suddenly, and send light signal to main control unit by optical fiber in the time there is arc fault.
In above 2 open texts, all utilize overcurrent criterion and arc light criterion whether to move and judge whether protection system moves simultaneously.But shortcoming is:
1, can not effectively protect rectifier cabinet.Only configure master unit tripping operation outlet, if when arc protection master unit power supply dead electricity, even if electric current, arc light criterion startup can not cut circuit breaker, effectively protected rectifier cabinet.
2,, when fault occurs, protective reaction not in time.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of arc light protecting device, can in time, rapidly, effectively cut off circuit breaker, protection rectifier cabinet for the arc light reaction of rectifier cabinet.
Technical scheme is as follows:
A kind of arc light protecting device, comprise two tripping operation outlet arc protection master units in parallel, the communication port of described two arc protection master units is connected to each other by the communications cable, the arc probe of described arc protection master unit is arranged in rectifier cabinet, and described arc probe is connected to described arc protection master unit by optical fiber; Current sensor is connected on the primary coil of rectifier transformer, and described current sensor connects respectively described two arc protection master units; Described tripping operation outlet is connected to circuit breaker.
Further: the arc optical signal in the described rectifier cabinet detecting is sent to described arc protection master unit by described arc probe; The current changing signal of the described rectifier transformer getting is sent to described arc protection master unit by described current sensor.
Further: also comprise arc protection auxiliary unit, described arc protection auxiliary unit connects arc protection master unit; Described arc probe is connected to described arc protection auxiliary unit by optical fiber, and described arc protection auxiliary unit receives the arc optical signal of described arc probe, and described arc optical signal is passed to arc protection master unit.
Further: described arc protection master unit adopts REA101 unit, described arc protection auxiliary unit adopts REA107 unit; Described REA101 cell location has tripping operation outlet, and between two described REA101 unit, communication port connects, and the tripping operation outlet of two described REA101 unit is in parallel, and the tripping operation outlet of described REA101 unit is connected to circuit breaker; REA107 unit connects arc probe by optical fiber, and its communication port is connected to the communication port of REA101 unit by cable, and described current sensor connects described REA101 unit.
Compared with prior art, technique effect of the present utility model comprises:
1, the tripping operation of two arc protection relay CPU outlet is in parallel; even the tripping operation of arc protection relay CPU outlet dead electricity like this; the tripping operation outlet of another arc protection relay CPU also can be moved; tripping circuit breaker; prevent expansion accident, effectively protect equipment.
That 2, reacts for the arc light of rectifier cabinet is timely, rapid, can effectively cut off circuit breaker, protection rectifier cabinet.
In the time that rectifier cabinet produces arc light, current changing signal picks up from the current sensor of voltage regulating transformer not as picking up from fast with in time that the current sensor of rectifier transformer reacts.In the time that rectifier cabinet produces arc light; rectifier transformer curent change be greater than the curent change of voltage regulating transformer; the current sensor that electric current criterion (current changing signal) is picked up from rectifier transformer can react rectifier cabinet situation more in time, rapidly; effectively cut off circuit breaker, play the effect of protection rectifier cabinet.
Brief description of the drawings
Fig. 1 is the electrical connection schematic diagram of arc light protecting device in the utility model.
Embodiment
Below with reference to accompanying drawing and preferred embodiment, technical solutions of the utility model are elaborated.
Consider that common electrolytic aluminium factory adopts a voltage regulating transformer and two rectifier transformers conventionally, so the utility model adopts the version of a voltage regulating transformer, two rectifier transformers, a rectifier cabinet.
As shown in Figure 1, be the electrical connection schematic diagram of arc light protecting device in the utility model.220KV bus 1 connects voltage regulating transformer 3, circuit breaker 4 is connected between 220KV bus 1 and voltage regulating transformer 3, the primary coil of rectifier transformer 5, rectifier transformer 6 connects the secondary coil of voltage regulating transformer 3, the secondary coil of rectifier transformer 5, rectifier transformer 6 connects rectifier cabinet 7, and rectifier cabinet 7 connects direct current positive and negative busbar 2.The effect of rectifier cabinet 7 is that alternating current is converted to direct current.
The structure of arc light protecting device comprises two tripping operation outlet arc protection master unit 10, arc protection master units 11 in parallel, and arc protection master unit 10 is connected by the communications cable with the communication port of arc protection master unit 11, realizes and intercourses data; The arc probe 8 of arc protection master unit 11 is arranged in rectifier cabinet 7, arc probe 8 is connected to arc protection master unit 11 by optical fiber, and the arc optical signal in the rectifier cabinet detecting 7 is sent to arc protection master unit 10 and arc protection master unit 11 by arc probe 8; Current sensor is arranged on the primary coil of rectifier transformer 5, rectifier transformer 6; current sensor connects respectively arc protection master unit 10, arc protection master unit 11, and the current changing signal of the rectifier transformer getting 5, rectifier transformer 6 is sent to arc protection master unit 10 and arc protection master unit 11.Arc probe 8 is for obtaining the arc optical signal in rectifier cabinet 7, and current sensor is for obtaining the current changing signal of rectifier transformer 5, rectifier transformer 6.The tripping operation outlet of arc protection master unit 10 is connected to circuit breaker 4.
Arc protection master unit 10, arc protection master unit 11 judge according to the arc optical signal and the current changing signal that get; in the time there is arc light and curent change and exceed setting range and meet simultaneously; think that rectifier cabinet 7 produces arc light; tripping operation control of export circuit breaker 4 is cut off the electricity supply, and plays the effect of protection rectifier cabinet 7.
In the utility model, arc protection master unit 10, arc protection master unit 11 adopt the REA101 unit of ABB AB of the U.S..Current sensor is arranged on the primary coil of rectifier transformer 5, rectifier transformer 6 and connects REA101 unit.Two REA101 cell locations have 2 tripping operation outlets; current changing signal is taken from two different rectifier transformers 5 and rectifier transformer 6; and between two REA101 unit, communication port connects; realize communication, intercourse data, then the tripping operation outlet of two REA101 unit is in parallel, even a REA101 unit dead electricity like this; the tripping operation outlet of another REA101 unit also can be moved; tripping circuit breaker 4, prevents expansion accident, effectively protects equipment.
In order further accurately to judge the position that arc light occurs, the utility model also comprises an expanding element, and this preferred embodiment of arc protection auxiliary unit 9(adopts REA107 unit), arc protection auxiliary unit 9 connects arc protection master unit 11.Arc probe 8 is connected to arc protection auxiliary unit 9 by optical fiber, and arc protection auxiliary unit 9 receives the arc optical signal of arc probe 8, and arc optical signal is passed to arc protection master unit 11.
In the utility model, arc protection auxiliary unit 9 is used for extended protection district, or protected object is divided into less region.Arc protection auxiliary unit 9 adopts the REA107 unit of ABB AB of the U.S..The function of REA107 unit is sensed light signal, and provides relevant information for REA101 unit.REA107 unit connects arc probe 8 by optical fiber, and its communication port is connected to the communication port of REA101 unit by cable.
The communication port of REA101 unit, REA107 unit connects respectively integrated system, the actuating signal that current changing signal, arc optical signal and tripping operation export like this etc. can be sent to integrated system, system operators can be understood the state of system in real time, realizes centralized control.
Claims (4)
1. an arc light protecting device, it is characterized in that: comprise two tripping operation outlet arc protection master units in parallel, the communication port of described two arc protection master units is connected to each other by the communications cable, the arc probe of described arc protection master unit is arranged in rectifier cabinet, and described arc probe is connected to described arc protection master unit by optical fiber; Current sensor is connected on the primary coil of rectifier transformer, and described current sensor connects respectively described two arc protection master units; Described tripping operation outlet is connected to circuit breaker.
2. arc light protecting device as claimed in claim 1, is characterized in that: the arc optical signal in the described rectifier cabinet detecting is sent to described arc protection master unit by described arc probe; The current changing signal of the described rectifier transformer getting is sent to described arc protection master unit by described current sensor.
3. arc light protecting device as described in claim 1 or 2, is characterized in that: also comprise arc protection auxiliary unit, described arc protection auxiliary unit connects arc protection master unit; Described arc probe is connected to described arc protection auxiliary unit by optical fiber, and described arc protection auxiliary unit receives the arc optical signal of described arc probe, and described arc optical signal is passed to arc protection master unit.
4. arc light protecting device as claimed in claim 3, is characterized in that: described arc protection master unit adopts REA101 unit, and described arc protection auxiliary unit adopts REA107 unit; Described REA101 cell location has tripping operation outlet, and between two described REA101 unit, communication port connects, and the tripping operation outlet of two described REA101 unit is in parallel, and the tripping operation outlet of described REA101 unit is connected to circuit breaker; REA107 unit connects arc probe by optical fiber, and its communication port is connected to the communication port of REA101 unit by cable, and described current sensor connects described REA101 unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420154343.9U CN203826933U (en) | 2014-04-01 | 2014-04-01 | Arc light protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420154343.9U CN203826933U (en) | 2014-04-01 | 2014-04-01 | Arc light protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826933U true CN203826933U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420154343.9U Expired - Fee Related CN203826933U (en) | 2014-04-01 | 2014-04-01 | Arc light protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332370A (en) * | 2020-11-12 | 2021-02-05 | 施耐德电气（中国）有限公司 | Transformer protection method and device, relay protector and power supply system |
-
2014
- 2014-04-01 CN CN201420154343.9U patent/CN203826933U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332370A (en) * | 2020-11-12 | 2021-02-05 | 施耐德电气（中国）有限公司 | Transformer protection method and device, relay protector and power supply system |
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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: 20140910 Termination date: 20190401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |