CN201656453U - Three-halves connection temporary protection testing apparatus - Google Patents
Three-halves connection temporary protection testing apparatus Download PDFInfo
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- CN201656453U CN201656453U CN2010201281137U CN201020128113U CN201656453U CN 201656453 U CN201656453 U CN 201656453U CN 2010201281137 U CN2010201281137 U CN 2010201281137U CN 201020128113 U CN201020128113 U CN 201020128113U CN 201656453 U CN201656453 U CN 201656453U
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- temporary protection
- pressing plate
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- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000005622 photoelectricity Effects 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model relates to a three-halves connection temporary protection testing apparatus, which is characterized by comprising a current circuit pressing plate, an analogue-digital converter, a microprocessor CPU, a photoelectric coupling circuit, a switch output relay, a BUS communication interface, a keyboard and a display, wherein the microprocessor CPU is connected with the BUS communication interface, a power supply, the analogue-digital converter, the keyboard, the display and the photoelectric coupling circuit respectively; the analogue-digital converter is connected with the current circuit pressing plate; and the photoelectric coupling circuit is connected with the switch output relay. The current circuit pressing plate can switch two paths of current into a temporary protection circuit according to experimental requirements respectively. The utility model has the advantages that: the apparatus is applied to substations of 500kV in three-halves connection; the introduction of microcomputer control obviously improves the working efficiency and the control accuracy; by switching the current circuit pressing plate, the apparatus can be used as conventional temporary protection and temporary protection for three-halves connection; and the wiring for connecting the temporary protection is simple.
Description
Technical field
The utility model relates to a kind of 3/2nds wiring temporary protection experimental rigs that the 500kV transformer station, the power plant that are applicable to 3/2nds wiring used.
Background technology
At present; in the 500kV of 3/2nds wiring transformer station; in the power plant; it is very complicated to install temporary protection additional; temporary protection commonly used has only one road electric current; one group of wire jumper; can not satisfy transformer station at the 500kV of 3/2nds wiring; the power plant installs the temporary protection requirements of one's work additional; the 500kV transformer station of 3/2nds wiring; the power plant need insert the secondary current of two current transformers that link to each other with the 500kV circuit simultaneously when installing temporary protection additional; promptly get the interflow and insert temporary protection; wire jumper need be got four groups of wire jumpers and receive on two relevant circuit breaker trip coils; each circuit breaker has two groups of breaking coils; i.e. first group of breaking coil; second group of breaking coil, the major advantage of this wiring is an advanced technology; easy to use.Conventional relay temporary protection can not adapt to the needs of power network development, the current domestic 500kV transformer station temporary protection device that also is not specifically designed to 3/2nds wiring.
Summary of the invention
The purpose of this utility model provides a kind of 3/2nds wiring temporary protection experimental rigs, and the short form test wiring is increased work efficiency, and has guaranteed the accuracy of reliability, rapidity, sensitivity and the fixed value adjusting of device action.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of 3/2nds wiring temporary protection experimental rigs; comprise current circuit pressing plate, analog-to-digital conversion, microprocessor CPU, photoelectricity coupling circuit, switching value output relay, BUS communication interface, keyboard, display; microprocessor CPU is connected with BUS communication interface, power supply, analog-to-digital conversion, keyboard, display, photoelectricity coupling circuit respectively; analog-to-digital conversion is connected with the current circuit pressing plate, and the photoelectricity coupling circuit is connected with the switching value output relay.
Described current circuit pressing plate can be thrown respectively according to the test needs and move back the two-way electric current in the temporary protection loop.
Compared with prior art; the beneficial effects of the utility model are: solved conventional circuit breaker temporary protection wiring complexity; relay type selecting difficulty; the defective that precision is not high; it is not high to utilize Microcomputer Protection to overcome old-fashioned relay precision; the fixed value adjusting error is big; shortcomings such as easy damage; operating efficiency and control precision have been significantly improved; move back the current circuit pressing plate by throwing; both can be used as traditional temporary protection uses; can be used as the temporary protection of 3/2nds wiring again; the wiring of installing and removing temporary protection additional is simple, has reduced the danger classes of this work, and then has ensured staff's personal safety and power grid security.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that the utility model is implemented structural representation.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
See Fig. 1; a kind of 3/2nds wiring temporary protection experimental rigs; comprise current circuit pressing plate, analog-to-digital conversion, microprocessor CPU, photoelectricity coupling circuit, switching value input relay, switching value output relay, BUS communication interface, keyboard, display; microprocessor CPU is connected with BUS communication interface, power supply, analog-to-digital conversion, keyboard, display, photoelectricity coupling circuit respectively; analog-to-digital conversion is connected with the current circuit pressing plate, and the photoelectricity coupling circuit is connected with the switching value output relay with the switching value input relay respectively.
See among Fig. 2 embodiment; in the 500kV transformer station of some 3/2nds wiring; a newly-built 500kV circuit puts into operation; according to sending electric scheme; install temporary protection additional in this side; but temporary protection protection circuit total length; need get the electric current of two current transformers that link to each other with this 500kV circuit simultaneously; the two-way electric current inserts in this device behind current circuit pressing plate interflow; switching value output relay with this device is connected in four breaking coil loops of two circuit breakers by auxiliary relay 1ZJ again; realize the temporary protection of 3/2nds wiring; when electric current is excessive when reaching setting value; this device action switching value output relay; start auxiliary relay 1ZJ; four normal opened contact 1ZJ1 of auxiliary relay 1ZJ; 1ZJ2; 1ZJ3; the 1ZJ4 closure; 1ZJ1; 1ZJ2 starts first group of breaking coil of first circuit breaker respectively; second group of breaking coil; 1ZJ3; 1ZJ4 starts first group of breaking coil of second circuit breaker respectively; second group of breaking coil; so just realized the access two-way electric current that 3/2nds wiring require, and wire jumper need be got four groups of wire jumpers and receives requirement on two relevant circuit breaker trip coils.
Process when this temporary protection uses as traditional temporary protection: only connect first via operating current A421, B421, C421, N421; the second road operating current a421, b421, c421, n421 loop pressing plate disconnect; when fault current reaches setting value; step switch amount output relay; start auxiliary relay 1ZJ; after the auxiliary relay 1ZJ action, get two normal opened contact 1ZJ1 of auxiliary relay 1ZJ, tripping relay TJ1, the TJ2 of 1ZJ2 deactivation breaker protection screen respectively and act on tripping operation.So just realized using as conventional temporary protection.The utility model be applicable to bus be the various modes of connection circuit, comprise female connection temporary protection device; solved the practical problem that 3/2nds wiring can not installed conventional temporary protection additional; both having can be used as conventional temporary protection uses; can be used as bus again is the circuit temporary protection of 3/2nds wiring; it is genuine multi-functional temporary protection device; be one of experimental rig of relay protection of power system teams and groups indispensability, this device is the renewal product of conventional temporary protection.
Claims (2)
1. wiring temporary protection experimental rig; it is characterized in that; comprise current circuit pressing plate, analog-to-digital conversion, microprocessor CPU, photoelectricity coupling circuit, switching value output relay, BUS communication interface, keyboard, display; microprocessor CPU is connected with BUS communication interface, power supply, analog-to-digital conversion, keyboard, display, photoelectricity coupling circuit respectively; analog-to-digital conversion is connected with the current circuit pressing plate, and the photoelectricity coupling circuit is connected with the switching value output relay.
2. a kind of 3/2nds wiring temporary protection experimental rigs according to claim 1 is characterized in that, described current circuit pressing plate can be thrown respectively according to the test needs and move back the two-way electric current in the temporary protection loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201281137U CN201656453U (en) | 2010-03-11 | 2010-03-11 | Three-halves connection temporary protection testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201281137U CN201656453U (en) | 2010-03-11 | 2010-03-11 | Three-halves connection temporary protection testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656453U true CN201656453U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201281137U Expired - Fee Related CN201656453U (en) | 2010-03-11 | 2010-03-11 | Three-halves connection temporary protection testing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066553A (en) * | 2013-01-12 | 2013-04-24 | 辽宁省电力有限公司鞍山供电公司 | Portable quiescent temporary protecting device and application method |
-
2010
- 2010-03-11 CN CN2010201281137U patent/CN201656453U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066553A (en) * | 2013-01-12 | 2013-04-24 | 辽宁省电力有限公司鞍山供电公司 | Portable quiescent temporary protecting device and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MAINTENANCE BRANCH OF LIAONING ELECTRIC POWER CO., Free format text: FORMER OWNER: AN'SHAN ULTRAHIGH PRESSURE BRANCH OF LIAONING ELECTRIC POWER CO., LTD. Effective date: 20130226 Owner name: STATE ELECTRIC NET CROP. Effective date: 20130226 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 114002 ANSHAN, LIAONING PROVINCE TO: 110003 SHENYANG, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130226 Address after: 110003 Liaoning Province glorious Street Heping District of Shenyang City No. 21 Patentee after: Maintenance Branch, Liaoning Power Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 114002 No. 33 Shengli South Road, Anshan, Liaoning Patentee before: An'shan Ultrahigh Pressure Branch of Liaoning Electric Power Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20180311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |