CN204205563U - A kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus - Google Patents
A kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus Download PDFInfo
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- CN204205563U CN204205563U CN201420684184.3U CN201420684184U CN204205563U CN 204205563 U CN204205563 U CN 204205563U CN 201420684184 U CN201420684184 U CN 201420684184U CN 204205563 U CN204205563 U CN 204205563U
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Abstract
The utility model discloses a kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus, it comprises valve-cooling control protection system, first valve cooling system trip signal receiving system, DC pole control system, second valve cooling system trip signal receiving system, first DC converter becomes service entrance switch protection screen and the second DC converter becomes service entrance switch protection screen, valve-cooling control protection system comprises the second contact, 3rd contact and the 4th contact, second contact is connected to the input of the second valve cooling system trip signal receiving system, the output of the second valve cooling system trip signal receiving system is connected to DC pole control system by on-the-spot CAN line, 3rd contact is connected to the first DC converter and becomes service entrance switch protection screen, 4th contact is connected to the second DC converter and becomes service entrance switch protection screen.The utility model, by the redundancy realizing trip avoidance function for the number of connections of reacting trip signal of the cold Control protection system of extension valve, prevents from causing substantial equipment damage accident.
Description
Technical field
The utility model relates to technical field of electric power, is specifically related to the redundancy implementation of a kind of high voltage DC power transmission converter station converter valve cooling system tripping operation.
Background technology
In China's electric power system, high voltage dc transmission technology application is increasingly extensive, and the high voltage direct current transmission project put into operation gets more and more.As the current conversion station of high voltage direct current transmission project main body, in standing, converter valve cooling system ensures converter valve equipment safety, ensures the key factor of DC transmission system operational reliability.In the high voltage direct current transmission project put into operation, there is the case being caused direct current locking many times by valve cooling system fault.
Valve cooling system fault, the cooling that cooling capacity can not meet converter valve equipment require or occur leaking etc. situation time, if DC transmission system continues to run, will cause catastrophic effect, equipment will seriously be damaged.So DC transmission engineering all configures valve cooling system trip avoidance function; valve cooling system operational factor reaches and presets trip rating; valve-cooling control protection system will send valve cooling system trip signal to pole control system; valve cooling system trip command is performed by direct current locking by DC pole control system; and isolate with AC system, prevent from causing substantial equipment damage accident.
Please refer to shown in Fig. 1, in the DC transmission engineering of current operation, valve cooling system does not all possess direct trip avoidance function, usually the 2 valve cooling system trip signals produced by junction closure by the cold Control protection system 1 of valve cooling system trip signal receiving system 4 receiving valve installed in it are shielded by valve-cooling control protection interface, trip signal is delivered to DC pole control system 5 in on-the-spot CAN mode by valve cooling system trip signal receiving system 4 again, finally realize trip avoidance function by DC pole control system 5, DC transmission system carries out lock operation, prevent from causing substantial equipment damage accident.Under this mode; if if valve-cooling control protection interface screen 2 and valve-cooling control protection system 1 communication failure valve-cooling control protection interface shield 2 when to shield with DC pole control system 5 communication failure or valve-cooling control protection interface that in the abnormal conditions such as the board of receiving valve cooling system trip signal in 2 and valve cooling system trip signal receiving system 4 fault, one of them occurs; DC pole control system 5 will not receive valve cooling system trip signal; if now valve cooling system equipment catastrophe failure, will cause catastrophic effect.Visible, which is single, there is potential safety hazard.
Utility model content
In order to solve the problem; the utility model patent provides a kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus; it is by the number of connections for reacting trip signal of the cold Control protection system of extension valve; the redundancy that service entrance switch protection screen realizes trip avoidance function is become again by valve cooling system trip signal receiving system and DC converter; still can realize trip avoidance function when existing trip signal transmission fault, prevent from causing substantial equipment damage accident.
For realizing above object, the technical scheme that the utility model is taked is:
A kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus, it comprises valve-cooling control protection system, first valve cooling system trip signal receiving system, DC pole control system, described valve-cooling control protection system comprises the first contact, the two ends of described first contact are connected to two inputs of the first valve cooling system trip signal receiving system respectively by hardwire, valve-cooling control protection system is made to export the trip signal that valve-cooling control protection system produces to first valve cooling system trip signal receiving system by this first junction closure, the output of described first valve cooling system trip signal receiving system is connected to the DC pole control system performing lock operation by on-the-spot CAN line, this high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus comprises the second valve cooling system trip signal receiving system further, first DC converter becomes service entrance switch protection screen and the second DC converter becomes service entrance switch protection screen, described valve-cooling control protection system comprises the second contact further, 3rd contact and the 4th contact, wherein, the two ends of the second contact are connected to two inputs of the second valve cooling system trip signal receiving system respectively by hardwire, the output of the second valve cooling system trip signal receiving system is connected to DC pole control system by on-the-spot CAN line, the two ends of described 3rd contact are connected to by hardwire signal positive supply and the signal negative supply that the first DC converter becomes service entrance switch protection screen respectively, the two ends of described 4th contact are connected to by hardwire signal positive supply and the signal negative supply that the second DC converter becomes service entrance switch protection screen respectively.
This high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus comprises a valve-cooling control protection interface screen further, and described first valve cooling system trip signal receiving system is installed in this valve-cooling control protection interface screen.
This high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus comprises a change of current further and becomes measurement interface screen, and described second valve cooling system trip signal receiving system is installed on this change of current and becomes in measurement interface screen.
The utility model compared with prior art; its beneficial effect is: the utility model patent provides a kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus; it is by the number of connections for reacting trip signal of the cold Control protection system of extension valve; the redundancy that service entrance switch protection screen realizes trip avoidance function is become again by valve cooling system trip signal receiving system and DC converter; still can realize trip avoidance function when existing trip signal transmission fault, prevent from causing substantial equipment damage accident.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of existing high voltage DC power transmission converter station converter valve cooling system tripgear;
Fig. 2 is the structured flowchart of a kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus.
Embodiment
Below in conjunction with the drawings and specific embodiments, content of the present utility model is described in further details.
Embodiment
A kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus, it comprises valve-cooling control protection system 1, valve-cooling control protection interface screen 2, the change of current becomes measurement interface screen 3, valve cooling system trip signal receiving system 41, valve cooling system trip signal receiving system 42, DC pole control system 5, DC converter becomes service entrance switch protection screen 61 and DC converter becomes service entrance switch protection screen 62.
Valve cooling system trip signal receiving system 41, valve cooling system trip signal receiving system 42 are installed on valve-cooling control protection interface screen 2 respectively and the change of current becomes in measurement interface screen 3.Four contacts are set in valve-cooling control protection system 1, be respectively the first contact, the second contact, the 3rd contact and the 4th contact, the two ends of the first contact are connected to two inputs of valve cooling system trip signal receiving system 41 respectively by hardwire, make valve-cooling control protection system 1 export the trip signal that valve-cooling control protection system 1 produces to valve cooling system trip signal receiving system 41 by this junction closure, the output of valve cooling system trip signal receiving system 41 is connected to the DC pole control system 5 performing lock operation by on-the-spot CAN line; The two ends of the second contact are connected to two inputs of valve cooling system trip signal receiving system 42 respectively by hardwire; the output of valve cooling system trip signal receiving system 42 is connected to DC pole control system 5 by on-the-spot CAN line; the two ends of the 3rd contact are connected to by hardwire signal positive supply and the signal negative supply that DC converter becomes service entrance switch protection screen 61 respectively, and the two ends of the 4th contact are connected to by hardwire signal positive supply and the signal negative supply that DC converter becomes service entrance switch protection screen 62 respectively.
When valve cooling system judges to occur tripping fault, these four contacts are all closed, valve cooling system is made to produce four road trip signals, this four roads trip signal wherein two-way sends DC pole control system 5 to respectively by valve cooling system trip signal receiving system 41 and valve cooling system trip signal receiving system 42, DC pole control system 5 pairs of direct current systems carry out locking, and isolate with AC system, prevent from causing substantial equipment damage accident, two-way trip signal sends DC converter respectively to and becomes service entrance switch protection screen 61 and DC converter and become service entrance switch protection screen 62 (direct current pole is equipped with two DC converters and becomes service entrance switchs in addition, therefore two DC converters are had to become service entrance switch protection screen corresponding with it), become the direct trip signal that receives of service entrance switch protection screen 62 by DC converter change service entrance switch protection screen 61 or DC converter and realize trip operation.
When valve-cooling control protection interface screen 2 and valve-cooling control protection system 1 communication failure, valve-cooling control protection interface shield 2 shield that in the abnormal conditions such as the board of receiving valve cooling system trip signal in 2 and valve cooling system trip signal receiving system 41 break down, one of them occurs with DC pole control system 5 communication failure or valve-cooling control protection interface time; DC pole control system 5 will not receive valve cooling system trip signal; now, trip signal is sent to DC pole control system 5 by the valve cooling system trip signal receiving system 42 become in measurement interface screen 3 by the change of current.
And when DC pole control system 5 breaks down; mode above by valve cooling system trip signal receiving system 42 realization tripping operation redundancy can not ensure the realization of trip avoidance function; therefore in the utility model preferred embodiment; trip signal sent to corresponding DC converter by the 3rd contact of expansion or the 4th contact and become service entrance switch protection screen 61 or DC converter becomes service entrance switch protection screen 62, become service entrance switch protection screen 61 or DC converter by DC converter and become service entrance switch protection screen 62 and directly receive trip signal and realize trip operation.
The utility model only need expand three contacts in valve-cooling control protection system 1; then make valve cooling system trip signal receiving system 42 and the second contact, DC converter become service entrance switch protection screen 61 and DC converter by hard wired mode to become service entrance switch protection screen 62 and be connected with the 3rd contact and the 4th contact respectively; again valve cooling system trip signal receiving system 42 is connected the redundancy that can realize trip avoidance function with DC pole control system 5 by on-the-spot CAN line, easy to operate.
Above-listed detailed description is illustrating for the utility model possible embodiments, and this embodiment is also not used to limit the scope of the claims of the present utility model, does not allly depart from the equivalence that the utility model does and implements or change, and all should be contained in the scope of the claims of this case.
Claims (3)
1. a high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus, it comprises valve-cooling control protection system (1), first valve cooling system trip signal receiving system (41), DC pole control system (5), described valve-cooling control protection system (1) comprises the first contact, the two ends of described first contact are connected to two inputs of the first valve cooling system trip signal receiving system (41) respectively by hardwire, valve-cooling control protection system (1) is made to export the trip signal that valve-cooling control protection system (1) produces to first valve cooling system trip signal receiving system (41) by this first junction closure, the output of described first valve cooling system trip signal receiving system (41) is connected to the DC pole control system (5) performing lock operation by on-the-spot CAN line, it is characterized in that, this high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus comprises the second valve cooling system trip signal receiving system (42) further, first DC converter becomes service entrance switch protection screen (61) and the second DC converter becomes service entrance switch protection screen (62), described valve-cooling control protection system (1) comprises the second contact further, 3rd contact and the 4th contact, wherein, the two ends of the second contact are connected to two inputs of the second valve cooling system trip signal receiving system (42) respectively by hardwire, the output of the second valve cooling system trip signal receiving system (42) is connected to DC pole control system (5) by on-the-spot CAN line, the two ends of described 3rd contact are connected to by hardwire signal positive supply and the signal negative supply that the first DC converter becomes service entrance switch protection screen (61) respectively, the two ends of described 4th contact are connected to by hardwire signal positive supply and the signal negative supply that the second DC converter becomes service entrance switch protection screen (62) respectively.
2. high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus according to claim 1; it is characterized in that; this high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus comprises valve-cooling control protection interface screen (2) further, and described first valve cooling system trip signal receiving system (41) is installed in this valve-cooling control protection interface screen (2).
3. high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus according to claim 1, it is characterized in that, this high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus comprises a change of current further and becomes measurement interface screen (3), and described second valve cooling system trip signal receiving system (42) is installed on this change of current and becomes in measurement interface screen (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420684184.3U CN204205563U (en) | 2014-11-14 | 2014-11-14 | A kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420684184.3U CN204205563U (en) | 2014-11-14 | 2014-11-14 | A kind of high voltage DC power transmission converter station converter valve cooling system tripping operation redundant apparatus |
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| CN204205563U true CN204205563U (en) | 2015-03-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204398A (en) * | 2015-07-31 | 2015-12-30 | 许继集团有限公司 | Optical modulated signal communication and conversion device and converter valve control and protection system |
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2014
- 2014-11-14 CN CN201420684184.3U patent/CN204205563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204398A (en) * | 2015-07-31 | 2015-12-30 | 许继集团有限公司 | Optical modulated signal communication and conversion device and converter valve control and protection system |
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