CN201382986Y - Ground fault diagnosis device for medium-voltage distribution network - Google Patents
Ground fault diagnosis device for medium-voltage distribution network Download PDFInfo
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- CN201382986Y CN201382986Y CN200920070999U CN200920070999U CN201382986Y CN 201382986 Y CN201382986 Y CN 201382986Y CN 200920070999 U CN200920070999 U CN 200920070999U CN 200920070999 U CN200920070999 U CN 200920070999U CN 201382986 Y CN201382986 Y CN 201382986Y
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Abstract
The utility model provides a ground fault diagnosis device for a medium-voltage distribution network, comprising a shell and a control panel arranged on the shell; the device also comprises a plurality of voltage signal interfaces, a plurality of current signal interfaces and an external interface board, which are arranged on the shell; and a fault recording diagnosis device which is connected with the voltage signal interfaces, the current signal interfaces and the control panel; at least three interfaces of a plurality of the voltage signal interfaces receive voltage signals, and at least one interface thereof receives neutral-point voltage signals; a plurality of the current signal interfaces receive feeder zero sequence current; the fault recording diagnosis device receives the signals from the control panel and carries out fault route selection and fault diagnosis to collected voltage signals, neutral-point voltage signals and the feeder zero sequence current; the external interface board outputs the results of route selection of the control panel and the diagnosis. The ground fault diagnosis device realizes two functions of fault route selection and fault diagnosis at the same time, and the device has high precise and short time for fault treatment.
Description
Technical field
The utility model relates to a kind of earth fault diagnostic equipment, relates in particular to a kind of earth fault diagnostic equipment that is used for medium voltage distribution network.
Technical background
The grounding fault diagnosis system can in time find accident potential, prevents trouble before it happens, and guarantees the safe operation of electrical network.
Existing low and medium voltage distribution network (comprising electric system) adopts line selection apparatus and wave recording device usually for earth fault.And be that line selection apparatus or wave recording device all can only be realized single failure line selection or fault diagnosis functions, promptly there is not a kind of earth fault diagnostic equipment that possesses failure line selection and two kinds of functions of fault diagnosis simultaneously.And diagnosis earth fault needs to realize simultaneously failure line selection and two kinds of functions of fault diagnosis sometimes in the low and medium voltage distribution network, and prior art can't satisfy this requirement.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective and a kind of earth fault diagnostic equipment that is used for medium voltage distribution network is provided, and it can realize failure line selection and two kinds of functions of fault diagnosis simultaneously.
The technical scheme that realizes above-mentioned purpose is: a kind of earth fault diagnostic equipment that is used for medium voltage distribution network, it comprises housing, is arranged at the control panel on the housing, it is characterized in that, also comprise several voltage signal interfaces, several current signal interfaces, the external application interface board that are arranged on the housing, the failure wave-recording diagnostic device that links to each other with described voltage signal interface, current signal interface, control panel;
Have at least 3 interfaces to receive voltage signal in described several voltage signal interfaces, have at least 1 interface to receive the neutral point voltage signal;
Described several current signal interfaces receive the feeder line zero-sequence current;
Described failure wave-recording diagnostic device receives the signal from control panel, and voltage signal, neutral point voltage signal, the feeder line zero-sequence current that collects carried out failure line selection, fault diagnosis;
Described external application interface board is with result's output of described control panel route selection, diagnosis.
Also be provided with voltage, current regulating module between described failure wave-recording diagnostic device and the control panel, one end of this voltage, current regulating module links to each other with control panel, the other end links to each other with the failure wave-recording diagnostic device, this electric current and voltage conditioning module becomes the high voltage in the electrical network, big current conversion low-voltage, little electric current, and analog signal conversion is become digital signal.
Described several voltage signal interfaces are distributed in one at least and list, and the summation of these several voltage signal interfaces is m, 4≤m≤30, and m is a natural number; Described several current signal interfaces are distributed in one at least and list, and the summation of these several current signal interfaces is n, and 3≤n≤100-m, n are natural number.
The beneficial effects of the utility model are: a kind of earth fault diagnostic equipment that is used for medium voltage distribution network of the present utility model can be realized failure line selection and two kinds of functions of fault diagnosis simultaneously, and its precision height, and the fault handling required time is extremely short.
Description of drawings
Fig. 1 is a kind of earth fault diagnostic equipment shell structure synoptic diagram that is used for medium voltage distribution network of the utility model;
Fig. 2 is a kind of earth fault diagnostic equipment structural representation that is used for medium voltage distribution network of the utility model.
Embodiment
Below in conjunction with accompanying drawing a kind of earth fault diagnostic equipment that is used for medium voltage distribution network of the present utility model is described further.
See also Fig. 1 and Fig. 2, there is shown a kind of earth fault diagnostic equipment that is used for medium voltage distribution network of the utility model, it comprises housing 1, voltage signal interface 2, current signal interface 3, external application interface board 4, control panel 5, failure wave-recording diagnostic device 6, voltage, current regulating module 7.
Be arranged at and have at least 3 interfaces to receive voltage signals in several voltage signal interfaces 2 on the housing 1, have at least 1 interface to receive the neutral point voltage signal; Several current signal interfaces 3 that are arranged on the housing 1 receive the feeder line zero-sequence current; These several voltage signal interfaces 2 are distributed in one at least and list, and its summation is m, 4≤m≤30, and m is a natural number; These several current signal interfaces 3 are distributed in one at least and list, and its summation is n, and 3≤n≤100-m, n are natural number.
Failure wave-recording diagnostic device 6 links to each other with voltage signal interface 2, current signal interface 3, control panel 5, and it receives the signal from control panel, and voltage signal, neutral point voltage signal, the feeder line zero-sequence current that collects carried out failure line selection, fault diagnosis;
One end of voltage, current regulating module 7 links to each other with control panel 5, and the other end links to each other with failure wave-recording diagnostic device 6, is used for the high voltage in the electrical network, big current conversion are become low-voltage, little electric current, and analog signal conversion is become digital signal.
Result's output of 4 route selections of external application interface board, diagnosis.In addition, the external application interface board can also be used to expand external function.
Though a kind of earth fault diagnostic equipment of the utility model is described with reference to current instantiation, but those skilled in the art should be realized that, above example only is to be used for illustrating the utility model, also can make the variation and the modification of various equivalences under the situation that does not break away from the utility model spirit.Therefore, if in connotation scope of the present utility model to the variation of above-mentioned example, modification all will drop in the scope of claims of the present utility model.
Claims (3)
1. earth fault diagnostic equipment that is used for medium voltage distribution network, it comprises housing, is arranged at the control panel on the housing, it is characterized in that, also comprise several voltage signal interfaces, several current signal interfaces, the external application interface board that are arranged on the housing, the failure wave-recording diagnostic device that links to each other with described voltage signal interface, current signal interface, control panel;
Have at least 3 interfaces to receive voltage signal in described several voltage signal interfaces, have at least 1 interface to receive the neutral point voltage signal;
Described several current signal interfaces receive the feeder line zero-sequence current;
Described failure wave-recording diagnostic device receives the signal from control panel, and voltage signal, neutral point voltage signal, the feeder line zero-sequence current that collects carried out failure line selection, fault diagnosis;
Described external application interface board is with result's output of route selection, diagnosis.
2. the earth fault diagnostic equipment that is used for medium voltage distribution network according to claim 1, it is characterized in that, also be provided with voltage, current regulating module between described failure wave-recording diagnostic device and the control panel, one end of this voltage, current regulating module links to each other with control panel, the other end links to each other with the failure wave-recording diagnostic device, this electric current and voltage conditioning module becomes the high voltage in the electrical network, big current conversion low-voltage, little electric current, and analog signal conversion is become digital signal.
3. the earth fault diagnostic equipment that is used for medium voltage distribution network according to claim 1 is characterized in that, described several voltage signal interfaces are distributed in one at least and list, and the summation of these several voltage signal interfaces is m, 4≤m≤30, and m is a natural number; Described several current signal interfaces are distributed in one at least and list, and the summation of these several current signal interfaces is n, and 3≤n≤100-m, n are natural number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920070999U CN201382986Y (en) | 2009-04-23 | 2009-04-23 | Ground fault diagnosis device for medium-voltage distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920070999U CN201382986Y (en) | 2009-04-23 | 2009-04-23 | Ground fault diagnosis device for medium-voltage distribution network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382986Y true CN201382986Y (en) | 2010-01-13 |
Family
ID=41526458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920070999U Expired - Lifetime CN201382986Y (en) | 2009-04-23 | 2009-04-23 | Ground fault diagnosis device for medium-voltage distribution network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201382986Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121960A (en) * | 2011-02-17 | 2011-07-13 | 长春吉致科技发展有限公司 | Intelligent fault judging device for self-closed through line of railway distribution network |
| CN106154115A (en) * | 2016-06-16 | 2016-11-23 | 上海交通大学 | Distributed feed line automatization terminal and distribution line failure judgement system, method |
-
2009
- 2009-04-23 CN CN200920070999U patent/CN201382986Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121960A (en) * | 2011-02-17 | 2011-07-13 | 长春吉致科技发展有限公司 | Intelligent fault judging device for self-closed through line of railway distribution network |
| CN106154115A (en) * | 2016-06-16 | 2016-11-23 | 上海交通大学 | Distributed feed line automatization terminal and distribution line failure judgement system, method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100113 |