CN201928003U - Protective device for transformer high voltage side - Google Patents
Protective device for transformer high voltage side Download PDFInfo
- Publication number
- CN201928003U CN201928003U CN201020642545XU CN201020642545U CN201928003U CN 201928003 U CN201928003 U CN 201928003U CN 201020642545X U CN201020642545X U CN 201020642545XU CN 201020642545 U CN201020642545 U CN 201020642545U CN 201928003 U CN201928003 U CN 201928003U
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- Prior art keywords
- transformer
- high voltage
- voltage side
- vacuum breaker
- protective device
- 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
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Abstract
The utility model discloses a protective device for a transformer high voltage side, which comprises a high voltage mutual inductor and a vacuum breaker, wherein the high voltage mutual inductor and the vacuum breaker are arranged at the high voltage side of a transformer; a control box is arranged at a low voltage side of the transformer; a control system is controlled through a single chip microcomputer. Because the high voltage mutual inductor and the vacuum breaker are arranged at the high voltage side of the transformer and the setting current of the vacuum breaker is adjusted into three times as much as the rated current of the transformer which is controlled by the vacuum breaker, when the transformer is overloaded severely, the transformer trips instantly; after the delay trip is started, if the load is reduced, another relay operates, the delay power cut is relived and the mistrip is prevented. Through the protective device, when the transformer is overloaded, automatic power cut can be realized; the transformer is protected effectively; and meanwhile, a delay reclosing control system is added, the reliability of power supply is greatly improved and the transformer is much safer and more stable.
Description
Technical field
The utility model belongs to transformer maintenance technology field, is specifically related to a kind of transformer high-voltage side protective device.
Background technology
Transformer is the device that changes alternating voltage, it is electrical energy transfer or as the critical elements of signal transmission, the function of have that AC voltage conversion, circuit lotus root are closed, impedance conversion and circuit being isolated, it is indispensable important component part in the electric power system, in case break down, will influence normal power supply, cause inconvenience.The transformer high-voltage side is carried out the important assurance that necessary protection is the normal operation of transformer; at present; transformer high-voltage side protected mode is generally vacuum circuit-breaker one Microcomputer Protection (or electromagnetic relay protection), or adopts the ring main unit of on-load switch one fuse combination.Though but the former has the disengagement failure short circuit current, is not subjected to the restriction of transformer capacity and protection the superior and the subordinate to cooperate comparatively flexible; trip time and definite value advantage such as can adjust; but price is higher; among the latter on-load switch cut-off the transfer current value sometimes can only the disjunction load current; but can not the disengagement failure electric current, so also cause very big potential safety hazard easily.
The utility model content
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and a kind of safety and stability is provided, guarantees power supply reliability, effectively protects the transformer high-voltage side protective device of transformer.
A kind of transformer high-voltage side protective device; comprise the high-voltage mutual inductor and the vacuum circuit-breaker that are arranged on the transformer high-voltage side; described control box is arranged on step down side, and the control system of described control box is a Single-chip Controlling, and described transformer is provided with time-delay power transmission device and alarm.
Because the utility model is provided with high-voltage mutual inductor and vacuum circuit-breaker in the transformer high-voltage side; the vacuum circuit-breaker setting current is adjusted into three times of institute's control transformer rated current; instantaneous tripping operation when the serious overload of transformer; after delay tripping starts; if load reduces; at this moment another relay adhesive; remove delay cut-off and prevent mistrip; this shows, utilize the utility model, under the transformer overload situation, can cut off the power supply voluntarily; protect transformer effectively; have time-delay reclosing control system simultaneously, improve the reliability of power supply greatly, and safety and stability.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1: a kind of transformer high-voltage side protective device, comprise the high-voltage mutual inductor 1 and the vacuum circuit-breaker 2 that are arranged on the transformer high-voltage side, described control box 3 is arranged on step down side, and the control system of described control box 3 is a Single-chip Controlling.
Described transformer is provided with time-delay power transmission device and alarm.
Utilize the utility model, high-voltage mutual inductor 1 and vacuum circuit-breaker 2 are set, vacuum circuit-breaker 2 setting currents are adjusted into three times of institute's control transformer rated current, instantaneous tripping operation when the serious overload of transformer in the transformer high-voltage side.Transformer is in operation, if surpass 100% o'clock alarm equipment alarm of its rated current, and the delay cut-off device starts, in overload (time is adjustable) vacuum circuit-breaker 2 tripping operation transformer outages after 120 minutes continuously, the power transmission device of delaying time simultaneously starts, reclosing after five minutes, tripping operation back time-delay for the second time send electricity to prolong ten minutes again; When transformer overloads 160% the time, the tripping operation delayed startup, in overload final vacuum circuit breaker 2 tripping operations in 30 minutes continuously, the transformer outage, the power transmission device of delaying time simultaneously starts, reclosing after five minutes, tripping operation back time-delay for the second time send electricity to prolong ten minutes again; When transformer overloads 200% the time, tripping relay adhesive but do not delay time, vacuum circuit-breaker 2 tripping operations, the power transmission device of delaying time simultaneously starts, reclosing after ten minutes; After delay tripping started, if load reduces, another relay adhesive was at this moment removed delay cut-off and is prevented mistrip.This shows, utilize the utility model, under the transformer overload situation, can cut off the power supply voluntarily, protect transformer effectively, have time-delay reclosing control system simultaneously, improve the reliability of power supply greatly.
Claims (2)
1. a transformer high-voltage side protective device comprises the high-voltage mutual inductor and the vacuum circuit-breaker that are arranged on the transformer high-voltage side, and it is characterized in that: described control box is arranged on step down side, and the control system of described control box is a Single-chip Controlling.
2. transformer high-voltage side protective device as claimed in claim 1 is characterized in that: described transformer is provided with time-delay power transmission device and alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020642545XU CN201928003U (en) | 2010-12-01 | 2010-12-01 | Protective device for transformer high voltage side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020642545XU CN201928003U (en) | 2010-12-01 | 2010-12-01 | Protective device for transformer high voltage side |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201928003U true CN201928003U (en) | 2011-08-10 |
Family
ID=44431838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020642545XU Expired - Fee Related CN201928003U (en) | 2010-12-01 | 2010-12-01 | Protective device for transformer high voltage side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201928003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487190A (en) * | 2010-12-01 | 2012-06-06 | 河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
-
2010
- 2010-12-01 CN CN201020642545XU patent/CN201928003U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487190A (en) * | 2010-12-01 | 2012-06-06 | 河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
| CN102487190B (en) * | 2010-12-01 | 2016-08-17 | 国网河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20111201 |