CN102368595A - Nuclear power station distribution board - Google Patents
Nuclear power station distribution board Download PDFInfo
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- CN102368595A CN102368595A CN201110304830XA CN201110304830A CN102368595A CN 102368595 A CN102368595 A CN 102368595A CN 201110304830X A CN201110304830X A CN 201110304830XA CN 201110304830 A CN201110304830 A CN 201110304830A CN 102368595 A CN102368595 A CN 102368595A
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- loop
- switch
- fault alarm
- voltage direct
- relay
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Abstract
The invention is suitable for the electric power distribution field and provides a nuclear power station distribution board which comprises a fault alarm device and a middle voltage switch board. The fault alarm device comprises a low voltage direct current fault alarm loop which comprises a relay and an air plug. A normally open switch which is controlled by the relay and is in series connection in a low voltage direct current protection loop is provided between two end points of the air plug. The device also comprises an isolating corresponding switch. In an embodiment of the invention, through adding the isolating corresponding switch into the low voltage direct current fault alarm loop, when a power loop breaker needs to be isolated, the isolating corresponding switch is disconnected so as to disconnect the low voltage direct current fault alarm loop, screw and wire tip damage caused by repeated push and pull operations of the air plug is avoided, possibly caused switch misoperation or operation failure when plug contact is poor also is avoided, and an original design function is not need to change. The nuclear power station distribution board has the characteristics of simple operation, convenient and flexible usage, and strong applicability.
Description
The application's application number that to be the applicant submit on December 22nd, 2008 is dividing an application of 200810241366.2 application for a patent for invention, by reference its full content is attached to the application.
Technical field
The invention belongs to the power distribution field, relate in particular to a kind of nuclear power station distribution board.
Background technology
The power loop circuit breaker that links to each other with a certain upstream device in the nuclear power station medium-voltage distribution dish is when the isolated location at present, and this upstream device is in down state, after the protection loop of distribution board detects this fault, sends failure alarm signal to main control room.At this moment; If when similar operations or other fault take place other upstream device again, alarm signal after detecting corresponding failure, is sent to main control room equally in the protection loop of distribution board; Because warning system is a bus system, a plurality of alarm signals will cause signal jam.For fear of signal jam; Prior art is when isolating the power loop circuit breaker; Need extract the aviation plug that links to each other with the relay of control warning on the distribution board simultaneously; And aviation plug is not an executive component, and the plug meeting makes screw socket and syringe needle damaged repeatedly, when the plug loose contact, possibly cause the malfunction or the tripping of switch.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of nuclear power station distribution board; Be intended to solve prior art when the power loop circuit breaker is isolated; Need extract the aviation plug that links to each other with the relay of control warning on the distribution board simultaneously; Plug makes screw socket and syringe needle damaged repeatedly, and when the plug loose contact, possibly cause the problem of the malfunction or the tripping of switch.
The embodiment of the invention is to realize like this; A kind of nuclear power station distribution board; Comprise an accident warning device and Medium voltage switch or circuit breaker dish; Wherein, accident warning device further comprises a low-voltage direct fault alarm loop, and said low-voltage direct fault alarm loop comprises the relay of control warning and the aviation plug that an end is connected with said relay; Be connected with one between the two-end-point of said aviation plug by the normal open switch that is connected on the relay control in the low-voltage direct protection loop; Said device comprises that further one is series at isolation in the said fault alarm loop to inductive switch, and the said relay that is connected in the low-voltage direct protection loop links to each other with the power loop circuit breaker, and said power loop circuit breaker is connected between upstream device and the electrical source of power.
In the embodiment of the invention, isolate to inductive switch, when needs are isolated the power loop circuit breaker through in direct current fault alarm loop, adding one; To isolate earlier inductive switch will be untied, so that direct current fault alarm loop breaks off, thus screw socket and the syringe needle damaged of having avoided the plug repeatedly of aviation plug to cause; And the switch malfunction or the tripping that when the plug loose contact, possibly cause; It need not to change former design function, and simple to operate, easy to use flexible, applicability is strong.
Description of drawings
Fig. 1 is the principle assumption diagram of the nuclear power station distribution board that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention, in direct current fault alarm loop, add one and isolate, when needs are isolated the power loop circuit breaker, will isolate earlier inductive switch is untied,, avoided the plug of aviation plug so that direct current fault alarm loop is broken off to inductive switch.
Fig. 1 shows the theory structure of the nuclear power station distribution board that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
In the distribution board 12; Low-voltage direct fault alarm loop comprises the aviation plug that a relay J 2 that the control that links to each other with power cathode is reported to the police and an end are connected with relay J 2; Be connected with one between the two-end-point of aviation plug by the normal open switch that is connected on relay J 1 control in the low-voltage direct protection loop, the other end of aviation plug links to each other with positive source to inductive switch through isolating.
Wherein, isolate the interface unit or the switch that can adopt existing multiple control buffer action to inductive switch, in embodiments of the present invention, isolate inductive switch is adopted a connecting piece 121.In addition; This is isolated inductive switch when specifically realizing; Can also be connected in the arbitrary place in the low-voltage direct fault alarm loop; As be connected between normal open switch and the aviation plug of relay J 1 control etc., and this isolation places outside the Medium voltage switch or circuit breaker dish (not shown) low pressure cell of distribution board 12 inductive switch.
In embodiments of the present invention, the 48V DC power supply is adopted in low-voltage direct fault alarm loop, and the 125V DC power supply is adopted in low-voltage direct protection loop.During concrete the realization, existing other low-voltage dc power supply power supply can be adopted in low-voltage direct fault alarm loop and low-voltage direct protection loop.
When needs are connected in the power loop circuit breaker Q S isolation between upstream device 11 and the electrical source of power 13, earlier brace 121 is untied, make low-voltage direct fault alarm loop break off.At this moment, as power loop circuit breaker Q S during in the isolated location, upstream device 11 is in down state; Thereby cause relay J 1 dead electricity; Normal open switch by its control is closed, owing to brace 121 is untied, low-voltage direct fault alarm loop is in off-state all the time; In fact normal open switch closed invalid that causes relay J 1 control; Make relay J 2 be failure to actuate, thereby be failure to actuate that reporting to the police can not appear in master-control room 14 by the respective switch in the alarm unit 141 in the master-control room 14 of these relay J 2 controls.
In addition, in the embodiment of the invention, for low-voltage direct protection loop and low-voltage direct fault alarm loop, following table shows its alarm circuit design:
| Sequence number | Symbol | Title | Contact | Alarm lamp | Warning reason |
| 1 | K3 | The test plug auxiliary contact | Break off | Bright | Switch test |
| 2 | K4 | The sulfur hexafluoride gas press contact | Break off | Bright | Sulfur hexafluoride gas pressure is low |
| 3 | K5 | Protection exit relay contact | Break off | Bright | The protection action |
| 4 | K6 | Switch over travel is kept watch on contact | Break off | Bright | Switch is not shifted the position onto |
| 5 | K7 | The switch snap close contact that puts in place | Break off | Bright | Switch puts in place does not have snap close |
| 6 | K1 | Warning exit relay contact | Break off | Do not work | Closing circuit is intact |
Can know that by last table when circuit breaker closing lock handle hand during in the UNBLOCK position, K6 breaks off; When killer switch does not put in place, when the snap close contact did not trigger, K7 broke off; When sulphur hexafluoride was reported to the police, K4 broke off; When overload or overcurrent protection action, K5 breaks off.Above situation all can cause relay J 1 dead electricity, causes by the normal open switch of its control closed.Above fault alarm can be divided into following two types:
1) switch fault (accident) is reported to the police, and directly reflects switch or loop fault;
2) the switch supervisory signal is reported to the police, and is mainly monitoring switch and operates and be provided with.
Therefore; In the embodiment of the invention, after sending electricity, need in time brace 121 to be connected, to avoid losing supervision to switch fault; Particularly after the action of the low or switch protection of sulphur hexafluoride pressure appears in switch; If master-control room 14 can not send alarm signal, then can only judge through inspection on the scene and other phenomenon, incur loss through delay fault handling time.In addition; In time brace 121 is connected to avoid correctly judging whether switch is operated puts in place, when removing when isolating, switch not operation put in place; At this moment; If brace 121 does not connect, master-control room 14 just can not send alarm signal, may cause this upstream device 11 to be in down state for a long time.
In the embodiment of the invention, isolate to inductive switch, when needs are isolated the power loop circuit breaker through in direct current fault alarm loop, adding one; To isolate earlier inductive switch will be untied, so that low-voltage direct fault alarm loop breaks off, thus screw socket and the syringe needle damaged of having avoided the plug repeatedly of aviation plug to cause; And the switch malfunction or the tripping that when the plug loose contact, possibly cause; It need not to change former design function, and simple to operate, easy to use flexible, applicability is strong.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. nuclear power station distribution board; Comprise an accident warning device and Medium voltage switch or circuit breaker dish; Wherein, Accident warning device further comprises a low-voltage direct fault alarm loop, and said low-voltage direct fault alarm loop comprises the relay of control warning and the aviation plug that an end is connected with said relay, is connected with one between the two-end-point of said aviation plug by the normal open switch that is connected on the relay control in the low-voltage direct protection loop; It is characterized in that; Said device comprises that further one is series at isolation in the said fault alarm loop to inductive switch, and the said relay that is connected in the low-voltage direct protection loop links to each other with the power loop circuit breaker, and said power loop circuit breaker is connected between upstream device and the electrical source of power.
2. nuclear power station distribution board as claimed in claim 1 is characterized in that, said isolation is a brace to inductive switch.
3. nuclear power station distribution board as claimed in claim 2 is characterized in that, the positive source in said fault alarm loop is connected with said brace, and the other end of said brace links to each other with the other end of said aviation plug; The power cathode in said fault alarm loop is connected with the relay that said control is reported to the police.
4. like claim 2 or 3 described nuclear power station distribution boards, it is characterized in that said brace is installed in the said Medium voltage switch or circuit breaker dish low pressure cell outside.
5. nuclear power station distribution board as claimed in claim 1 is characterized in that, 125V direct current supply is adopted in said low-voltage direct protection loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110304830.XA CN102368595B (en) | 2008-12-22 | 2008-12-22 | Nuclear power station distribution board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110304830.XA CN102368595B (en) | 2008-12-22 | 2008-12-22 | Nuclear power station distribution board |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102413662A Division CN101447659B (en) | 2008-12-22 | 2008-12-22 | Fault alarm device and switchboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102368595A true CN102368595A (en) | 2012-03-07 |
| CN102368595B CN102368595B (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110304830.XA Active CN102368595B (en) | 2008-12-22 | 2008-12-22 | Nuclear power station distribution board |
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| Country | Link |
|---|---|
| CN (1) | CN102368595B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215323U (en) * | 1987-11-10 | 1988-08-10 | 国营哈尔滨第一机器制造厂 | Automatic alarm high-tension switch gear cabinet by misoperation |
| CN2150647Y (en) * | 1993-03-01 | 1993-12-22 | 谷恩荣 | Magnetic-starter for transient fault delay interruption of power system |
| JPH06335125A (en) * | 1993-03-12 | 1994-12-02 | Mitsubishi Electric Corp | Switching device |
| CN2496148Y (en) * | 2001-08-30 | 2002-06-19 | 余孟达 | Intelligent power converter |
| CN2669204Y (en) * | 2003-09-22 | 2005-01-05 | 林建峰 | Line fault measurement and control automatic alarm device |
-
2008
- 2008-12-22 CN CN201110304830.XA patent/CN102368595B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215323U (en) * | 1987-11-10 | 1988-08-10 | 国营哈尔滨第一机器制造厂 | Automatic alarm high-tension switch gear cabinet by misoperation |
| CN2150647Y (en) * | 1993-03-01 | 1993-12-22 | 谷恩荣 | Magnetic-starter for transient fault delay interruption of power system |
| JPH06335125A (en) * | 1993-03-12 | 1994-12-02 | Mitsubishi Electric Corp | Switching device |
| CN2496148Y (en) * | 2001-08-30 | 2002-06-19 | 余孟达 | Intelligent power converter |
| CN2669204Y (en) * | 2003-09-22 | 2005-01-05 | 林建峰 | Line fault measurement and control automatic alarm device |
Non-Patent Citations (1)
| Title |
|---|
| 王术合: "变电所综合自动化系统监测方案初探", 《电气化铁路牵引变电所新技术研讨会论文集》 * |
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| Publication number | Publication date |
|---|---|
| CN102368595B (en) | 2014-04-16 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Applicant after: China General Nuclear Power Corporation Applicant after: Dayawan Nuclear Power Running Management Co., Ltd. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Applicant before: China Guangdong Nuclear Power Group Co., Ltd. Applicant before: Dayawan Nuclear Power Running Management Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHINA GUANGDONG NUCLEAR POWER GROUP CO., LTD. TO: CHINA GENERAL NUCLEAR GROUP CO., LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA GENERAL NUCLEAR GROUP CO., LTD. Free format text: FORMER OWNER: DAYAWAN NUCLEAR POWER RUNNING MANAGEMENT CO., LTD. Effective date: 20141211 Owner name: GUANGDONG NUCLEAR POWER JOINT CO., LTD. Free format text: FORMER OWNER: CHINA GENERAL NUCLEAR GROUP CO., LTD. Effective date: 20141211 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141211 Address after: 518031 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Patentee after: Guangdong Nuclear Power Joint Venture Co., Ltd Patentee after: China General Nuclear Power Corporation Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee before: China General Nuclear Power Corporation Patentee before: Dayawan Nuclear Power Running Management Co., Ltd. |