CN202268747U - Loaded main-transformer voltage-regulating closed loop - Google Patents
Loaded main-transformer voltage-regulating closed loop Download PDFInfo
- Publication number
- CN202268747U CN202268747U CN2011203989949U CN201120398994U CN202268747U CN 202268747 U CN202268747 U CN 202268747U CN 2011203989949 U CN2011203989949 U CN 2011203989949U CN 201120398994 U CN201120398994 U CN 201120398994U CN 202268747 U CN202268747 U CN 202268747U
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- transformer
- protection
- loop
- load voltage
- overload
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Abstract
The utility model discloses a loaded main-transformer voltage-regulating closed loop, which comprises wiring of protection A and protection B. After protection action for overload closed loaded voltage regulation of the protection A and the protection B of a main transformer, two groups of closed points 6D:37-6D:38 are serially connected with terminals 1-6D:58 and terminals 1-6D:61 of a control measurement display and are connected to a loop of terminals X1:7 -X1:16 of a transformer voltage regulating and controlling power source through original secondary cables. The closed points of relays protected by overload closed loaded voltage regulation are reset to be communicated with a voltage regulating device to control power source of the loop after the overload of the transformer disappears, and loaded voltage regulating function of the transformer can be controlled remotely without manual resetting. Besides, the loaded main-transformer voltage-regulating closed loop is simple and convenient in operation, is economical and practical and free of additional equipment, and remote control for the loaded voltage regulation part of the transformer can be realized in time after central control is realized.
Description
Technical field
The utility model relates to a kind of control loop, specifically a kind of main transformer on-load voltage regulation locked loop that can satisfy after the centralized control in time transformer on-load voltage regulating part remote operation.
Background technology
Electric power plays an important role to expanding economy and construction as the main energy sources medium.The develop rapidly of electric power system constantly proposes new requirement to the stable operation of electric power system, and constantly perfect along with power network constantly enlarges, and part transformer station has realized unattended operation, central controlled operational mode.The distant place consistency operation of transformer station has occupied leading position, and many deficiencies such as design is lack of standardization because the relaying protection secondary circuit also exists, disunity, loop defectiveness have also had a strong impact on the safe operation of electric power system.For example electric power system 3# always falls in Nangang three, the 4# main transformer uses MR type on-load voltage regulating device; 5#, 6# main transformer use ABB to produce BUL type on-load voltage regulating device; These on-load voltage regulating devices adopt the mode of tripping pressure regulating device control power supply to come locking on-load voltage regulation under the overladen situation of main transformer.
Since three always fall 3# ~ 6# main transformer with for the impact load; The overtension of 10kV electric power system often occurs or cross low phenomenon; Come the voltage of Adjustment System so must in time adjust the pressure regulation gear of main transformer; The electricity consumption that could ensure the production line needs, and satisfies the technological requirement of production line.Central controlled operational mode is adopted in the operation area that at present supplies power, and personnel all concentrate on five and always fall and carry out monitoring on duty.Always fall in the transformer station of 220kV electric power system three; When the main transformer running overload is forbidden the on-load voltage regulation gear position operation, be linked into because of the secondary circuit of main transformer overload locking on-load voltage regulation protection in the urgent stop loop of control power supply of transformer regulator.Under the overladen situation of transformer, directly the control power supply of tripping on-load voltage regulating device plays the locking effect.After overload state disappears, can not realize automatic involution.In the time of need carrying out pressure regulation, the operator on duty must arrive in three and always fall the main transformer on-site manual operation of the air switch of Regulation Control is closed next time, and next time the pressure regulation operation of transferring the files just can be carried out in backstage, a distant place like this.This state will prolong the adjustment time of system voltage, can not timely system voltage be controlled in the acceptable ranges, have a strong impact on rate of qualified voltage.Load tapchanging control loop of former transformer overload locking such as accompanying drawing 1.
Summary of the invention
In order to overcome the problem that prior art exists; The purpose of the utility model provides a kind of main transformer on-load voltage regulation locked loop, and this loop is after the transformer overload state disappears, and the relay close point of overload locking on-load voltage regulation protection is recovered; Connect the power supply of regulator control loop again; Do not need manual reset just can realize distant place control operation transformer on-load voltage regulating function once more, easy to operate, need not increase equipment; Not only economical, but also practical, satisfy after the centralized control in time to transformer on-load voltage regulating part remote operation.
The purpose of the utility model realizes through following technical scheme:
A kind of main transformer on-load voltage regulation locked loop; Comprise the wiring of A protection and B protection; It is characterized in that: observing and controlling screen 1-6D:58 and 1-6D:61 terminal are received in two groups of 6D:37-6D:38 close point series connection of main transformer A protection, B protection overload locking on-load voltage regulation action, and are transferred in the transformer Regulation Control power supply X1:7-X1:16 terminal loop through former secondary cable.
The utility model is transformed the system of original regulator, and cancellation A protection, B protect to observing and controlling screen 6D:39 to 1-6D:64; 6D:40 to 1-6D:67; Between former locked loop wiring.Select for use two groups of 6D:37-6D:38 close point series connection of main transformer A protection, B protection " overload locking on-load voltage regulation " action to receive observing and controlling screen 1-6D:58 and 1-6D:61 terminal, be transferred in the transformer Regulation Control power supply X1:7-X1:16 terminal loop through former secondary cable.Transformer is after " overload locking on-load voltage regulation " protection action, and close point is opened direct disconnection transformer on-load voltage regulating control electric power loop, without tripping control power supply air switch, and plays the locking effect.After the transformer load electric current recovered normally, transformer on-load voltage regulating control electric power loop also recovered normal.For the central controlled unmanned institute's remote operation of standing is provided convenience.
Because overload locking pressure regulation output contact in the main transformer backup protection has been linked in measure and control device or the on-load voltage regulation gear control loop; When the main transformer running overload is forbidden the on-load voltage regulation gear position operation; Only consider the locking effect in the design, do not consider auto-reset function.When a main transformer on-load voltage regulation gear distant place can't carry out operating the second time, problem mainly occurred in and can not timely the control power supply be closed.Can not reasonably carry out the on-load voltage regulation gear position operation of main transformer, the causes voltage parameter can't satisfy the requirement of electrical network, has had a strong impact on the raising of rate of qualified voltage.
The utility model is through the improvement of main transformer on-load voltage regulation control loop; Effectively prevented the generation that repeats of defective; Guarantee the reasonable operation of main transformer on-load voltage regulation gear control, made voltage parameter can satisfy the requirement of electrical network in real time, further improved rate of qualified voltage; And really realized the effect of main transformer overload abnormal protection, improved safety in operation, the reliability of transforming plant main transformer depressor.The utility model is practical, operates and simple and convenient, and secondary circuit is revised simple and direct, need not increase equipment, and is not only economical, but also practical.Satisfied after the centralized control in time to transformer on-load voltage regulating remote operation partly.
Description of drawings
Fig. 1 is the load tapchanging control loop figure of existing former transformer overload locking.
Fig. 2 is the described improved control loop figure of transformer overload locking on-load voltage regulation of the utility model.
Embodiment
A kind of main transformer on-load voltage regulation locked loop; Comprise A protection and B protection; See Fig. 2; Observing and controlling screen 1-6D:58 and 1-6D:61 terminal are received in two groups of 6D:37-6D:38 close point series connection of main transformer A protection, B protection overload locking on-load voltage regulation action, and are transferred in the transformer Regulation Control power supply X1:7-X1:16 terminal loop through former secondary cable.
The utility model is transformed the system of original regulator, and two groups of 6D:39-6D:40 of cancellation A protection, B protection " overload locking on-load voltage regulation " action are made war to the former locked loop wiring between observing and controlling screen 1-6D:64 and the 1-6D:67.Select for use two groups of 6D:37-6D:38 close point series connection of main transformer A protection, B protection " overload locking on-load voltage regulation " action to receive observing and controlling screen 1-6D:58 and 1-6D:61 terminal, be transferred in the transformer Regulation Control power supply X1:7-X1:16 terminal loop through former secondary cable.After " overload locking on-load voltage regulation " protection action, close point is opened direct disconnection transformer on-load voltage regulating control electric power loop like accompanying drawing 2. transformers, without tripping control power supply air switch, and plays the locking effect.After the transformer load electric current recovered normally, transformer on-load voltage regulating control electric power loop also recovered normal.For the central controlled unmanned institute's remote operation of standing is provided convenience.
The utility model promptly stops the coupling part between the on-load voltage regulation gear controller through the normally opened contact and the measure and control device of overload locking pressure regulation output in the backup protection of cancellation main transformer, keeps a measure and control device and a distant place and promptly stops load tapchanging function.Adopt the close point of the exit relay of main transformer overload locking on-load voltage regulation protection, it is serially connected in the loop of the load tapchanging control operation power supply of main transformer.After main transformer overload locking on-load voltage regulation protection action, the method that can directly break off regulator control loop power supply is forbidden the pressure regulation gear of main transformer adjustment transformer under overladen state.Realize the function of main transformer locking on-load voltage regulation gear position operation under overload state.After the transformer overload state disappeared, the relay close point of overload locking on-load voltage regulation protection was recovered, and connects the power supply of regulator control loop again, does not need manual reset just can realize distant place control operation transformer on-load voltage regulating function once more.
Claims (1)
1. main transformer on-load voltage regulation locked loop; Comprise A protection and B protection; It is characterized in that: observing and controlling screen 1-6D:58 and 1-6D:61 terminal are received in two groups of 6D:37-6D:38 close point series connection of main transformer A protection, B protection overload locking on-load voltage regulation action, and are transferred in the transformer on-load voltage regulating control power supply X1:7-X1:16 terminal loop through former secondary cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203989949U CN202268747U (en) | 2011-10-19 | 2011-10-19 | Loaded main-transformer voltage-regulating closed loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203989949U CN202268747U (en) | 2011-10-19 | 2011-10-19 | Loaded main-transformer voltage-regulating closed loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202268747U true CN202268747U (en) | 2012-06-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203989949U Expired - Lifetime CN202268747U (en) | 2011-10-19 | 2011-10-19 | Loaded main-transformer voltage-regulating closed loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202268747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196308A (en) * | 2017-07-04 | 2017-09-22 | 王佳宁 | 1000 kilovolts of main transformer regulating compensations become on-load voltage regulation and haul oneself willingly into cutting system and its pressure regulation method |
-
2011
- 2011-10-19 CN CN2011203989949U patent/CN202268747U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196308A (en) * | 2017-07-04 | 2017-09-22 | 王佳宁 | 1000 kilovolts of main transformer regulating compensations become on-load voltage regulation and haul oneself willingly into cutting system and its pressure regulation method |
| CN107196308B (en) * | 2017-07-04 | 2023-08-18 | 河南送变电建设有限公司 | 1000 KV main transformer voltage regulation compensation variable on-load voltage regulation self-switching system and voltage regulation method thereof |
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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: 20120606 |