CN205047412U - Cold main circulating pump power frequency control circuit of HVDC valve - Google Patents
Cold main circulating pump power frequency control circuit of HVDC valve Download PDFInfo
- Publication number
- CN205047412U CN205047412U CN201520552953.9U CN201520552953U CN205047412U CN 205047412 U CN205047412 U CN 205047412U CN 201520552953 U CN201520552953 U CN 201520552953U CN 205047412 U CN205047412 U CN 205047412U
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- relay
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- normally opened
- loop
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Abstract
The utility model discloses a cold main circulating pump power frequency control circuit of HVDC valve, throw locking blowback way by force including parallelly connected main pump power frequency operation control circuit, main pump operation locking return circuit and two CPU troubles, the main circulating pump that does not stop transport when two CPU troubles, fine solution during two CPU troubles, main circulating pump stops transport, results in the problem of change of current valve bounce floodgate.
Description
Technical field
The present invention relates to control and the protective gear of high voltage direct current transmission converter valve cooling system main circulating pump, particularly main circulating pump industrial frequency control loop.
Background technique
Traditional converter valve cooling system main circulating pump adopts CPU to control, and in order to strengthen its reliability, adopts two-ways cpu, and when 1 CPU breaks down, automatically switch to an other CPU and run, main circulating pump adheres to running.When two cpu faults, main circulating pump is out of service, causes converter valve to be stopped transport.Therefore, be necessary to develop main circulating pump when a kind of voltage direct-current transmission valve cold main circulating pump industrial frequency control loop makes dual processors fault and do not stop transport, thus adapt to the requirement of the cold main circulating pump of voltage direct-current transmission valve.
Summary of the invention
The object of the invention is to the shortcoming overcoming above-mentioned prior art, a kind of voltage direct-current transmission valve cold main circulating pump industrial frequency control loop is provided, the problem that during solution dual processors fault, main circulating pump is stopped transport.
Object of the present invention is achieved through the following technical solutions:
Voltage direct-current transmission valve cold main circulating pump industrial frequency control loop comprises main pump power frequency operation control loop in parallel, main pump runs locked loop and dual processors fault throws by force locking blowback road,
The circuit breaker that described main pump power frequency operation loop comprises series connection often opens auxiliary contact, the first relay first normally opened contact and main pump contactor coil, also comprise the 4th relay first normally opened contact in parallel with the first relay first normally opened contact respectively and the 5th relay normally open contact
Described main pump runs locked loop and comprises the 3rd relay second normally opened contact, 4th relay second contact, 6th relay normally open contact, 7th relay normally-closed contact, 8th relay normally-closed contact, 9th relay normally-closed contact, tenth relay normally-closed contact and the 6th relay coil, described 3rd relay second normally opened contact, with the 7th relay normally-closed contact after 4th relay second normally opened contact and the 6th relay normally open contact parallel connection, 8th relay normally-closed contact, 9th relay normally-closed contact, tenth relay normally-closed contact and the 6th relay coil connect,
Described dual processors fault is thrown by force locking blowback road and is comprised the 11 relay normally-closed contact of series connection, the 12 relay normally-closed contact, the 6th relay normally open contact, the 3rd relay the 3rd normally-closed contact, the 4th relay the 3rd normally-closed contact and the 5th relay coil
Described first relay first normally opened contact, first relay second normally opened contact, second relay first normally opened contact, second relay second normally opened contact, 3rd relay first normally opened contact, 3rd relay second normally opened contact, 3rd relay the 3rd normally-closed contact, 4th relay first normally opened contact, 4th relay second normally opened contact, 4th relay the 3rd normally-closed contact, 7th relay normally-closed contact, 8th relay normally-closed contact, 9th relay normally-closed contact, tenth relay normally-closed contact, 11 relay contact, 12 relay contact is PLC control point.
In order to better realize the present invention, described main pump power frequency operation loop also comprises ten three relay normally open contact in parallel with the first relay first normally opened contact, when soft initiator detect reach full voltage time the 13 relay normally open contact close 3S after disconnect, prevent soft open cut frequently time phase angle inconsistent.
In order to better realize the present invention, described main pump runs locked loop and also comprises the first relay first normally opened contact in parallel with the 3rd relay second normally opened contact respectively and the second relay first normally opened contact, described dual processors fault is thrown by force locking blowback road and is also comprised the first relay second normally-closed contact, second relay second normally-closed contact of connecting with the 6th relay normally open contact, and described first relay first normally opened contact and the second relay first normally opened contact are closed when soft start.
In order to better realize the present invention, described voltage direct-current transmission valve cold main circulating pump industrial frequency control loop also comprises main pump power frequency fault loop, described main pump power frequency fault loop is in parallel with main pump power frequency operation loop, and described main pump power frequency fault loop comprises circuit breaker normally closed auxiliary contact and the 14 relay coil of series connection.
In order to better realize the present invention, described voltage direct-current transmission valve cold main circulating pump industrial frequency control loop also comprises main pump overload loop, described main pump overload loop is in parallel with main pump power frequency operation loop, and the thermorelay that described main pump overload loop comprises series connection often opens auxiliary contact and the 15 relay coil.
The invention has the beneficial effects as follows:
(1) voltage direct-current transmission valve provided by the invention cold main circulating pump industrial frequency control loop, main circulating pump of not stopping transport when dual processors fault, when well solving dual processors fault, main circulating pump is stopped transport, and causes the problem that converter valve trips;
(2) Economy: voltage direct-current transmission valve provided by the invention cold main circulating pump industrial frequency control loop, achieves the normal startup of main circulating pump, when can avoid dual processors fault, main circulating pump is stopped transport, converter valve trips, and causes the risk of heavy economic losses, has higher Economy;
(3) reliability: the invention solves traditional converter valve cooling system when dual processors is stopped transport, the problem that main circulating pump is stopped transport, improves valve cooling system reliability of operation;
(4) Security: the present invention adopts relay contact and relay coil to combine closely and configures, when dual processors fault, throws main circulating pump by force automatically, improves the Security that valve cooling system runs and converter valve is run.
Accompanying drawing explanation
Fig. 1 is the cold main circulating pump industrial frequency control of voltage direct-current transmission valve described in one embodiment of the present invention circuit theory figure.
Embodiment
Below in conjunction with embodiment and accompanying drawing, an embodiment of the invention are described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, voltage direct-current transmission valve cold main circulating pump industrial frequency control loop comprises main pump power frequency operation control loop in parallel, main pump runs locked loop and dual processors fault throws by force locking blowback road,
The QF1G circuit breaker that described main pump power frequency operation loop comprises series connection often open auxiliary contact 21 ?24, K11 relay normally open contact 11 ?14, KA1C relay first normally opened contact 11 ?14 and KM1G main pump contactor coil, also comprise respectively with K11 relay normally open contact 11 ?14 KA1C relay first normally opened contacts in parallel 11 ?14, KA1D relay first normally opened contact 11 ?14 and KA1E relay normally open contact 11 ?14
Described main pump run locked loop comprise KA1A relay first normally opened contact 21 ?24, KA1B relay first normally opened contact 21 ?24, KA1C relay second normally opened contact 21 ?24, KA1D relay second contact 21 ?24, KA12A relay normally open contact 11 ?14, KA2A relay normally-closed contact 31 ?32, KA2B relay normally-closed contact 31 ?32, KA2C relay normally-closed contact 31 ?32, KA2D relay normally-closed contact 31 ?32 and KA12A relay coil, described KA1A relay first normally opened contact 21 ?24, KA1B relay first normally opened contact 21 ?24, KA1C relay second normally opened contact 21 ?24, KA1D relay second normally opened contact 21 ?24 and KA12A relay normally open contact 11 ?14 in parallel after and KA2A relay normally-closed contact 31 ?32, KA2B relay normally-closed contact 31 ?32, KA2C relay normally-closed contact 31 ?32, KA2D relay normally-closed contact 31 ?32 and KA12A relay coil connect,
Described dual processors fault throw by force locking blowback road comprise series connection KC90A relay normally-closed contact 11 ?12, KAC90B relay normally-closed contact 21 ?22, KA12A relay normally open contact 21 ?24, KA1A relay second normally-closed contact 41 ?42, KA1B relay second normally-closed contact 41 ?42, KA1C relay the 3rd normally-closed contact 41 ?42, KA1D relay the 3rd normally-closed contact 41 ?42 and KA1E relay coil
Described KA1A relay first normally opened contact 21 ?24, KA1A relay second normally opened contact 41 ?42, KA1B relay first normally opened contact 21 ?24, KA1B relay second normally opened contact 41 ?42, KA1C relay first normally opened contact 11 ?14, KA1C relay second normally opened contact 21 ?24, KA1C relay the 3rd normally-closed contact 41 ?42, KA1D relay first normally opened contact 11 ?14, KA1D relay second normally opened contact 21 ?24, KA1D relay the 3rd normally-closed contact 41 ?42, KA2A relay normally-closed contact 31 ?32, KA2B relay normally-closed contact 31 ?32, KA2C relay normally-closed contact 31 ?32, KA2D relay normally-closed contact 31 ?32, KC90A relay contact 11 ?12, KAC90B relay contact 21 ?22 be PLC control point.
In order to better realize the present invention, described voltage direct-current transmission valve cold main circulating pump industrial frequency control loop also comprises main pump power frequency fault loop, described main pump power frequency fault loop is in parallel with main pump power frequency operation loop, described main pump power frequency fault loop comprise series connection QF1G circuit breaker normally closed auxiliary contact 21 ?24 and K14 relay coil.
In order to better realize the present invention, described voltage direct-current transmission valve cold main circulating pump industrial frequency control loop also comprises main pump overload loop, described main pump overload loop is in parallel with main pump power frequency operation loop, described main pump transship FR1 thermorelay that loop comprises series connection often open auxiliary contact 97 ?98 and K16 relay coil.
When soft initiator detect reach full voltage time K11 relay normally open contact 11 ?14 close 3S after disconnect, prevent soft open cut frequently time phase angle inconsistent, KA1C relay first normally opened contact 11 ?14 and KA1D relay first normally opened contact 11 ?14 to close, KM1G main pump contactor coil obtains electric, P01 main circulating pump by hardware exchange to power frequency operation.
During P01 main circulating pump soft start, main pump power frequency operation loop KA1C relay first normally opened contact 11 ?14 and KA1D relay first normally opened contact 11 ?14 to disconnect, simultaneously, main pump to run in locked loop KA2A relay normally-closed contact 31 ?32, KA2B relay normally-closed contact 31 ?32, KA2C relay normally-closed contact 31 ?32, KA2D relay normally-closed contact 31 ?32 still to remain closed, KA1A relay first normally opened contact 21 ?24 and KA1B relay first normally opened contact 21 ?24 to close, KA1C relay second normally opened contact and KA1D relay second normally opened contact disconnect, KA12A relay coil obtains electric, KA12A relay normally open contact in this loop 11 ?14 to close.
During P01 main circulating pump power frequency operation, main pump power frequency operation loop KA1C relay second normally opened contact 21 ?24 and KA1D relay second normally opened contact 21 ?24 to close, simultaneously, main pump to run in locked loop KA2A relay normally-closed contact 31 ?32, KA2B relay normally-closed contact 31 ?32, KA2C relay normally-closed contact 31 ?32, KA2D relay normally-closed contact 31 ?32 still to remain closed, KA1A relay first normally opened contact 21 ?24 and KA1B relay first normally opened contact 21 ?24 to disconnect, KA1C relay second normally opened contact 21 ?24 and KA1D relay second normally opened contact 21 ?24 to close, KA12A relay coil obtains electric, KA12A relay normally open contact in this loop 11 ?14 to close,
So no matter P01 main circulating pump is when soft start or power frequency operation, it is all conducting that main pump runs locked loop, namely KA12A relay normally open contact 11 ?14 be all closed, unless when being switched to P02 pump main circulating pump, namely when KA2A relay normally-closed contact 31 ?32, KA2B relay normally-closed contact 31 ?32, KA2C relay normally-closed contact 31 ?32 and KA2D relay normally-closed contact 31 ?32 have a contact to disconnect time, main pump runs locked loop and disconnects.
When there is dual processors fault, the output point lossing signal that CPU is all, in main pump power frequency operation loop KA1C relay second normally opened contact 21 ?24 and KA1D relay second normally opened contact 21 ?24 dead electricity disconnect, dual processors fault to throw by force in locking blowback road KC90A relay normally-closed contact 11 ?12 and KC90B relay normally-closed contact 21 ?22 to close, KA1A relay second normally-closed contact 41 ?42, KA1B relay second normally-closed contact 41 ?42, KA1C relay the 3rd normally-closed contact 41 ?42 and KA1D relay the 3rd normally-closed contact 41 ?42 to close, KA12A relay normally open contact 21 ?24 run in locking closed at main pump, KA1E relay coil obtains electric, main pump power frequency operation loop KA1E relay normally open contact 11 ?14 to close.So in main pump power frequency operation loop, although KA1C relay first normally opened contact 11 ?14 and KA1D relay first normally opened contact 11 ?14 dead electricity disconnect, but KA1E relay normally open contact 11 ?14 to close, KM1G main pump contactor coil obtains electric, and P01 main circulating pump runs.
Claims (5)
1. voltage direct-current transmission valve cold main circulating pump industrial frequency control loop, is characterized in that: comprise main pump power frequency operation control loop in parallel, main pump runs locked loop and dual processors fault throws by force locking blowback road,
The circuit breaker that described main pump power frequency operation loop comprises series connection often opens auxiliary contact, the first relay first normally opened contact and main pump contactor coil, also comprise the 4th relay first normally opened contact in parallel with the first relay first normally opened contact respectively and the 5th relay normally open contact
Described main pump runs locked loop and comprises the 3rd relay second normally opened contact, 4th relay second contact, 6th relay normally open contact, 7th relay normally-closed contact, 8th relay normally-closed contact, 9th relay normally-closed contact, tenth relay normally-closed contact and the 6th relay coil, described 3rd relay second normally opened contact, with the 7th relay normally-closed contact after 4th relay second normally opened contact and the 6th relay normally open contact parallel connection, 8th relay normally-closed contact, 9th relay normally-closed contact, tenth relay normally-closed contact and the 6th relay coil connect,
Described dual processors fault is thrown by force locking blowback road and is comprised the 11 relay normally-closed contact of series connection, the 12 relay normally-closed contact, the 6th relay normally open contact, the 3rd relay the 3rd normally-closed contact, the 4th relay the 3rd normally-closed contact and the 5th relay coil
Described first relay first normally opened contact, first relay second normally opened contact, second relay first normally opened contact, second relay second normally opened contact, 3rd relay first normally opened contact, 3rd relay second normally opened contact, 3rd relay the 3rd normally-closed contact, 4th relay first normally opened contact, 4th relay second normally opened contact, 4th relay the 3rd normally-closed contact, 7th relay normally-closed contact, 8th relay normally-closed contact, 9th relay normally-closed contact, tenth relay normally-closed contact, 11 relay contact, 12 relay contact is PLC control point.
2. voltage direct-current transmission valve cold main circulating pump industrial frequency control loop according to claim 1, is characterized in that: described main pump power frequency operation loop also comprises ten three relay normally open contact in parallel with the first relay first normally opened contact.
3. voltage direct-current transmission valve cold main circulating pump industrial frequency control loop according to claim 1, it is characterized in that: described main pump runs locked loop and also comprises the first relay first normally opened contact in parallel with the 3rd relay second normally opened contact respectively and the second relay first normally opened contact, described dual processors fault is thrown by force locking blowback road and is also comprised first relay second normally-closed contact of connecting with the 6th relay normally open contact, second relay second normally-closed contact, described first relay first normally opened contact and the second relay first normally opened contact are closed when soft start.
4. voltage direct-current transmission valve cold main circulating pump industrial frequency control loop according to claim 1, it is characterized in that: described voltage direct-current transmission valve cold main circulating pump industrial frequency control loop also comprises main pump power frequency fault loop, described main pump power frequency fault loop is in parallel with main pump power frequency operation loop, and described main pump power frequency fault loop comprises circuit breaker normally closed auxiliary contact and the 14 relay coil of series connection.
5. voltage direct-current transmission valve cold main circulating pump industrial frequency control loop according to claim 1, it is characterized in that: described voltage direct-current transmission valve cold main circulating pump industrial frequency control loop also comprises main pump overload loop, described main pump overload loop is in parallel with main pump power frequency operation loop, and the thermorelay that described main pump overload loop comprises series connection often opens auxiliary contact and the 15 relay coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520552953.9U CN205047412U (en) | 2015-07-28 | 2015-07-28 | Cold main circulating pump power frequency control circuit of HVDC valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520552953.9U CN205047412U (en) | 2015-07-28 | 2015-07-28 | Cold main circulating pump power frequency control circuit of HVDC valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047412U true CN205047412U (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520552953.9U Withdrawn - After Issue CN205047412U (en) | 2015-07-28 | 2015-07-28 | Cold main circulating pump power frequency control circuit of HVDC valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020126A (en) * | 2015-07-28 | 2015-11-04 | 广州高澜节能技术股份有限公司 | Power frequency control loop of high-voltage direct current transmission valve cooling main circulating pump |
-
2015
- 2015-07-28 CN CN201520552953.9U patent/CN205047412U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020126A (en) * | 2015-07-28 | 2015-11-04 | 广州高澜节能技术股份有限公司 | Power frequency control loop of high-voltage direct current transmission valve cooling main circulating pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160224 Effective date of abandoning: 20170517 |