CN203747375U - Extra-high voltage direct-current voltage divider protection device - Google Patents
Extra-high voltage direct-current voltage divider protection device Download PDFInfo
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- CN203747375U CN203747375U CN201420002434.0U CN201420002434U CN203747375U CN 203747375 U CN203747375 U CN 203747375U CN 201420002434 U CN201420002434 U CN 201420002434U CN 203747375 U CN203747375 U CN 203747375U
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- 230000001681 protective effect Effects 0.000 claims description 8
- 230000011664 signaling Effects 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 101000970561 Homo sapiens Myc box-dependent-interacting protein 1 Proteins 0.000 description 1
- 102100021970 Myc box-dependent-interacting protein 1 Human genes 0.000 description 1
- 235000012364 Peperomia pellucida Nutrition 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model relates to an extra-high voltage direct-current voltage divider protection device comprising a pressure relay. The input end of the pressure relay is connected with a direct-current voltage divider. The output end of the pressure relay is connected with a signal interface apparatus. The signal bus output end of the signal interface apparatus is connected with a control and protection host. An AND logic module is arranged in the central processing unit of the control and protection host. The output signal line of the protection host is connected with a two-out-of-three logic module. The two-out-of-three logic module is used to perform AND logic operation on any two signals in three signals, and then perform OR logic operation on the three signals which are subjected to the AND logic operation. According to the utility model, only when two sets or three sets independent trip contacts occur at the same time, the two-out-of-three logic module adopts the 'two-out-of-three' logic judgment, an instruction is given out according to the judgment result to stop the operation of a direct-current system, so the extra-high voltage direct-current voltage divider can be effectively protected.
Description
Technical field
The utility model belongs to ultra-high voltage converter station field, is specifically related to a kind of for ensureing the protective device of extra-high voltage direct-current voltage divider of stable operation of DC transmission system.
Background technology
In DC converter station, divider gathers the direct voltage amount of DC fields, provides basic data for controlling protection system.The quality of its working condition is related to the stable operation of DC transmission system, is the visual plant in current conversion station.
In divider, operated by rotary motion has insulating material, in the time that the insulation property of insulating material reduce, affects the safe operation of equipment.In order to monitor the performance of divider insulating material, generally adopt relay as protective device, in the time that reducing, insulation property can send trip signal, and can stoppage in transit direct current system after DC control and protection system acknowledge(ment) signal.
In prior art, what divider all adopted is man-to-man protected mode, and each relay sends a trip signal, delivers to corresponding dual DC control and protection system, transmits one to one signal.Any a set of DC control and protection system will send stoppage in transit instruction after receiving signal; in three relays there is tripping operation in any one relay; whole system will trip, and easily produces misoperation, affects the direct current system stable operation in UHVDC converter station.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned defect, provides a kind of and effectively prevents the malfunction of website and produce unnecessary direct current and stop transport, the protective device of safe and reliable extra-high voltage direct-current voltage divider.
For achieving the above object, the protective device of the extra-high voltage direct-current voltage divider of the utility model design, comprise the first pressure switch and the second pressure switch, the tripping operation input of described the first pressure switch and warning input are all connected the divider output of DC converter station, and the tripping operation output of described the first pressure switch and warning output are connected with respectively the first tripping operation output signal line and the first alarm output signal line, the tripping operation input of described the second pressure switch and warning input are all connected the divider output of DC converter station, the warning output of described the second pressure switch and tripping operation output are connected with respectively the second warning output signal line and the second tripping operation output signal line, the first tripping operation output signal line connects first signal interface equipment, described the first alarm output signal line and the second warning output signal line are connected respectively two signal input ports of secondary signal interface equipment, described the second warning output signal line connects the 3rd interface unit for signaling, the signal bus output of described first signal interface equipment connects first and controls protected host, the signal bus output of described secondary signal interface equipment connects second and controls protected host, the signal bus output of described the 3rd interface unit for signaling connects the 3rd and controls protected host, in the CPU of described the second control protected host, be provided with and logic module, described first controls the output signal line of protected host, second controls the output signal line of protected host, the 3rd output signal line of controlling protected host is connected to respectively two three and gets two logic modules, each three outputs of getting two logic modules are connected with respectively tripping controller, described three get two logic modules for any two signals of three signals are carried out and logic, again by with logic after three signals carry out or logic.
In technique scheme, in described divider, be provided with SF6 gas-insulated chamber.
SF6 gas pressure in the utility model divider reduces to a certain extent; the SF6 relay of divider sends alarm signal and trip signal; controlling protected host receives after trip signal; only in two covers or the simultaneous situation of three cover independent trip contacts; three get two logic modules adopts the logic of " three get two " to judge; send instruction according to judged result, stoppage in transit direct current system, effectively protects extra-high voltage direct-current voltage divider.
Brief description of the drawings
Fig. 1 is the utility model circuit structure diagram;
Fig. 2 of the present utility model three gets the logic schematic diagram of two logic modules;
In figure: 1-the first pressure switch (1.1-first output signal line that trips; 1.2-the first alarm output signal line); 2-the second pressure switch (2.1-the second warning output signal line; 2.2-second output signal line that trips); 3-first signal interface equipment; 4-secondary signal interface equipment; 5-the 3rd interface unit for signaling; 6-first controls protected host; 7-second controls protected host; 8-the 3rd controls protected host; 9-tri-gets two logic modules; 10-tripping controller; 11-divider.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The protective device of extra-high voltage direct-current voltage divider as shown in Figure 1, comprise the first pressure switch 1 and the second pressure switch 2, the tripping operation input of the first pressure switch 1 and warning input are all connected divider 11 outputs of DC converter station, and the tripping operation output of the first pressure switch 1 and warning output are connected with respectively the first tripping operation output signal line 1.1 and the first alarm output signal line 1.2, the tripping operation input of the second pressure switch 2 and warning input are all connected divider 11 outputs of DC converter station, and the warning output of the second pressure switch 2 and tripping operation output are connected with respectively the second warning output signal line 2.1 and the second tripping operation output signal line 2.2, the first tripping operation output signal line 1.1 connects first signal interface equipment 3, the first alarm output signal line 1.2 and the second warning output signal line 2.1 are connected respectively two signal input ports of secondary signal interface equipment 4, the second tripping operation output signal line 2.2 connects the 3rd interface unit for signaling 5, the signal bus output of first signal interface equipment 3 connects first and controls protected host 6, the signal bus output of secondary signal interface equipment 4 connects second and controls protected host 7, the signal bus output of the 3rd interface unit for signaling 5 connects the 3rd and controls protected host 8, in the CPU of the second control protected host 7, be provided with and logic module 9, first controls the output signal line of protected host 6, second controls the output signal line of protected host 7, the 3rd output signal line of controlling protected host 8 is connected to respectively two three and gets two logic modules 9, each three outputs of getting two logic modules 9 are connected with respectively tripping controller 10, three get two logic modules 9 for any two signals of three signals are carried out and logic, again by with logic after three signals carry out or logic, in divider 11, be provided with SF6 gas-insulated chamber.
Pressure switch of the present utility model, for judging the state of divider body SF6 gas pressure, in the time that pressure decreased arrives this setting value of 0.3bar, the auxiliary contact action of pressure switch, sends trip signal.In the time that pressure decreased arrives this setting value of 0.45bar, the auxiliary contact action of pressure switch, sends alarm signal
Interface unit for signaling, for gathering trip signal and the alarm signal of pressure switch, by signal bus, is sent to control protected host by the trip signal collecting and alarm signal.
Control protected host for controlling the CPU that protected host is an integrated form, the signal of receiving, through processing, by inner signal bus, is delivered to respectively to two " three get two " logic modules.Wherein second control protected host 7 and the BIN1 receiving and BIN2 signal need to be carried out to the processing of logical AND, then output to respectively two three and get two logic modules 9.
Three principles of getting two logic modules 9 as shown in Figure 2, for being carried out to any two signals, three signals receiving carry out "AND" logic, then three "AND" logical signals are carried out to "or" logic, export last trip command and instruct whole system trip operation.
The part that the utility model is not described in detail belongs to prior art.
Claims (2)
1. the protective device of an extra-high voltage direct-current voltage divider, comprise the first pressure switch (1) and the second pressure switch (2), the tripping operation input of described the first pressure switch (1) and warning input are all connected divider (11) output of DC converter station, and the tripping operation output of described the first pressure switch (1) and warning output are connected with respectively the first tripping operation output signal line (1.1) and the first alarm output signal line (1.2);
The tripping operation input of described the second pressure switch (2) and warning input are all connected divider (11) output of DC converter station, and the warning output of described the second pressure switch (2) and tripping operation output are connected with respectively the second warning output signal line (2.1) and second output signal line (2.2) that trips;
It is characterized in that: the first tripping operation output signal line (1.1) connects first signal interface equipment (3), described the first alarm output signal line (1.2) and the second warning output signal line (2.1) are connected respectively two signal input ports of secondary signal interface equipment (4), described the second warning output signal line (2.2) connects the 3rd interface unit for signaling (5), the signal bus output of described first signal interface equipment (3) connects first and controls protected host (6), the signal bus output of described secondary signal interface equipment (4) connects second and controls protected host (7), the signal bus output of described the 3rd interface unit for signaling (5) connects the 3rd and controls protected host (8), in the CPU of described the second control protected host (7), be provided with and logic module (9), described first controls the output signal line of protected host (6), second controls the output signal line of protected host (7), the 3rd output signal line of controlling protected host (8) is connected to respectively two three and gets two logic modules (9), each three outputs of getting two logic modules (9) are connected with respectively tripping controller (10), described three get two logic modules (9) for any two signals of three signals are carried out and logic, again by with logic after three signals carry out or logic.
2. the protective device of extra-high voltage direct-current voltage divider according to claim 1, is characterized in that: in described divider (11), be provided with SF6 gas-insulated chamber and SF6 gas pressure relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002434.0U CN203747375U (en) | 2014-01-02 | 2014-01-02 | Extra-high voltage direct-current voltage divider protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002434.0U CN203747375U (en) | 2014-01-02 | 2014-01-02 | Extra-high voltage direct-current voltage divider protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747375U true CN203747375U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420002434.0U Expired - Lifetime CN203747375U (en) | 2014-01-02 | 2014-01-02 | Extra-high voltage direct-current voltage divider protection device |
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| Country | Link |
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| CN (1) | CN203747375U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207993A (en) * | 2016-08-02 | 2016-12-07 | 南京南瑞继保电气有限公司 | A kind of rapid protection system |
| CN114093140A (en) * | 2021-10-18 | 2022-02-25 | 中核核电运行管理有限公司 | Nuclear power plant transformer gas relay alarm system |
| CN114291133A (en) * | 2021-12-17 | 2022-04-08 | 交控科技股份有限公司 | Control method and device for remote restart of ground equipment, and remote restart device |
| CN117505532A (en) * | 2023-12-05 | 2024-02-06 | 江苏天淮钢管有限公司 | An automatic dust removal system and dust removal method for seamless steel pipes |
-
2014
- 2014-01-02 CN CN201420002434.0U patent/CN203747375U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207993A (en) * | 2016-08-02 | 2016-12-07 | 南京南瑞继保电气有限公司 | A kind of rapid protection system |
| CN114093140A (en) * | 2021-10-18 | 2022-02-25 | 中核核电运行管理有限公司 | Nuclear power plant transformer gas relay alarm system |
| CN114291133A (en) * | 2021-12-17 | 2022-04-08 | 交控科技股份有限公司 | Control method and device for remote restart of ground equipment, and remote restart device |
| CN117505532A (en) * | 2023-12-05 | 2024-02-06 | 江苏天淮钢管有限公司 | An automatic dust removal system and dust removal method for seamless steel pipes |
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| 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: 20140730 |