CN201533156U - Extra-high-voltage transmission line self-adaptive reclosing control device - Google Patents
Extra-high-voltage transmission line self-adaptive reclosing control device Download PDFInfo
- Publication number
- CN201533156U CN201533156U CN2009202546363U CN200920254636U CN201533156U CN 201533156 U CN201533156 U CN 201533156U CN 2009202546363 U CN2009202546363 U CN 2009202546363U CN 200920254636 U CN200920254636 U CN 200920254636U CN 201533156 U CN201533156 U CN 201533156U
- Authority
- CN
- China
- Prior art keywords
- control module
- circuit
- control device
- main control
- reclosing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an automatic control device for a power system, in particular to an extra-high-voltage transmission line self-adaptive reclosing control device, solving the problem that the existing reclosing has blindness. The extra-high-voltage transmission line self-adaptive reclosing control device comprises a master control module, an open-in circuit connected with I/O pins of the master control module, an open-out circuit and an alternating-current acquisition circuit connected with the analog input end of the master control module; and the power supply end of the master control module is connected with a power supply, the input end thereof is connected with buttons, and the output end thereof is connected with a display module. The reclosing control device has simple structure and convenient use, effectively solves the problem that the existing reclosing has blindness, avoids the misjudgment of the permanent faults caused by the secondary arc current, improves the reliability of the running of a system and a device, is applicable to the extra-high-voltage transmission lines, and is especially applicable to 500KV ultra-high-voltage power transmission lines.
Description
Technical field
The utility model relates to the electric power system automatic control equipment, specifically is a kind of extra high voltage network adaptive reclose control device.
Background technology
The extra high voltage network of China's operation at present; when single-phase fault takes place after; protection and phase selection element action, the route of pipe line is not transient fault or permanent fault, reclosing is after certain time-delay; the phase that will trip switch closes; as be transient fault, successful reclosing then, as be permanent fault; then excise three-phase, circuit is out of service.Facts have proved that in a large number in the single-phase fault, the probability of transient fault is more than 90%, but single-phase successful reclosing rate does not reach 90% far away.Tracing it to its cause is, in some cases, because secondary arc current electric arc does not extinguish, the phenomenon that causes single-phase transient fault to characterize is the same with permanent fault, thereby causes single-phase reclosing failure.So blindly the single-phase coincidence of carrying out has not only caused the three-phase tripping operation, and makes electric power system be subjected to the impact of short circuit current for twice, is unfavorable for the safe operation of system and equipment, is necessary to invent a kind of novel control device that can eliminate the blindness of reclosing for this reason.
Summary of the invention
The utility model provides a kind of extra high voltage network adaptive reclose control device in order to solve the problem that there is blindness in existing reclosing.
The utility model is to adopt following technical scheme to realize: extra high voltage network adaptive reclose control device, comprise main control module, link to each other with the I/O pin of main control module open into circuit, digital output circuit and link to each other with the analog input end of main control module exchange Acquisition Circuit; The power end of main control module is connected with power supply, and the input of main control module is connected with button, and the output of main control module is connected with display module.Described opening into circuit, digital output circuit, interchange Acquisition Circuit is existing known configurations.
During work, the input that exchanges Acquisition Circuit picks out from transmission line secondary TA, TV loop, opens into circuit to link to each other with transmission line secondary circuit associated contacts (contact, reclosing contact etc. respectively trip as three-phase); Leaving the loop then links to each other with reclosing.Facts have proved, when single-phase fault is permanent fault or secondary arc current electric arc when not extinguishing, transmission line two ends voltage to earth lower (it is following that secondary voltage is about 3V); When single-phase fault is transient fault, transmission line two ends voltage to earth higher (secondary voltage is all greater than 3V), therefore can judge that single-phase fault is permanent fault or transient fault according to the voltage value at transmission line two ends behind the switch trip, if transient fault allows single-phase coincidence; If permanent fault (comprise because of secondary arc current be judged as permanent fault) is then carried out the three-phase tripping operation; Facts have proved that in a large number the starting stage after the three-phase tripping operation, electric capacity in the transmission line and reactance meeting resonance produce the very high voltage of numerical value; At this moment, if secondary arc current electric arc does not extinguish, this voltage can reach rated voltage and can continue for some time, and if there is permanent fault (secondary arc current electric arc extinguishes) really in circuit, this voltage can be lowerd very soon also near zero; So after the three-phase tripping operation, utilize line side three-phase voltage numerical value correctly identification circuit whether have permanent fault really, promptly when the line side three-phase all has voltage, single-phase fault is transient fault (because secondary arc current electric arc does not extinguish the permanent fault erroneous judgement that causes), reclosing carries out three and coincides, and when circuit three-phase no-voltage or indivedual phase no-voltage, single-phase fault is for being permanent fault, and reclosing does not overlap.According to above-mentioned principle, in main control module, write corresponding program, the concrete course of work is as follows: exchange Acquisition Circuit the transmission line voltage to earth is gathered in real time, when transmission line generation single-phase fault, protection and phase selection element action, main control module detects trip signal, then main control module is under the support of corresponding program, judge by the voltage that collects being carried out numerical value, determine that single-phase fault is permanent fault or transient fault, and send control signal by digital output circuit, finally realize that by reclosing single-phase coincidence or three-phase tripping operation or three coincide; In this process, trip signal, voltage value etc. all shows in real time by display module.
Further, also comprise network interface, printing interface, watchdog circuit, memory circuit and clock chip; Wherein, network interface, printing interface, watchdog circuit, memory circuit, clock chip all link to each other with main control module; Network interface is used for connecting bus, carries out Network Transmission; Printing interface is used to connect printer, realizes online printing; The effect of watchdog circuit is to guarantee the device reliability service, avoids device generation deadlock phenomenon as much as possible; Memory circuit is used for the course of action and the definite value of storage device, so that accident analysis; Clock chip charges to self in the device running, even device outage like this, clock also can true(-)running.
The utility model is simple in structure, easy to use, efficiently solve the problem that there is blindness in reclosing that has now, the permanent fault of having avoided causing because of secondary arc current is judged by accident, improved the reliability of system and equipment operation, be applicable to extra high voltage network, be particularly useful for the 500KV extra high voltage network.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-main control module, 2-are opened into circuit, the 3-digital output circuit, and 4-exchanges Acquisition Circuit, 5-button, 6-display module, 7-network interface, 8-printing interface, 9-watchdog circuit, 10-clock chip.
Embodiment
Extra high voltage network adaptive reclose control device, comprise main control module 1, link to each other with the I/O pin of main control module 1 open into circuit 2, digital output circuit 3 and link to each other with the analog input end of main control module 1 exchange Acquisition Circuit 4; The power end of main control module 1 is connected with power supply, and the input of main control module 1 is connected with button 5, and the output of main control module 1 is connected with display module 6; Also comprise network interface 7, printing interface 8, watchdog circuit 9, memory circuit and clock chip 10; Wherein, network interface 7, printing interface 8, watchdog circuit 9, memory circuit, clock chip 10 all link to each other with main control module 1.During concrete enforcement, main control module 1 adopts the MC68376 single-chip microcomputer, and display module 6 adopts LCD, and watchdog circuit 9 adopts the MAX705 chip, and clock chip 10 adopts the PCF8583 chip.
Claims (2)
1. extra high voltage network adaptive reclose control device is characterized in that: comprise main control module (1), link to each other with the I/O pin of main control module (1) open into circuit (2), digital output circuit (3) and link to each other with the analog input end of main control module (1) exchange Acquisition Circuit (4); The power end of main control module (1) is connected with power supply, and the input of main control module (1) is connected with button (5), and the output of main control module (1) is connected with display module (6).
2. extra high voltage network adaptive reclose control device according to claim 1 is characterized in that: also comprise network interface (7), printing interface (8), watchdog circuit (9), memory circuit and clock chip (10); Wherein, network interface (7), printing interface (8), watchdog circuit (9), memory circuit, clock chip (10) all link to each other with main control module (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202546363U CN201533156U (en) | 2009-11-19 | 2009-11-19 | Extra-high-voltage transmission line self-adaptive reclosing control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202546363U CN201533156U (en) | 2009-11-19 | 2009-11-19 | Extra-high-voltage transmission line self-adaptive reclosing control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201533156U true CN201533156U (en) | 2010-07-21 |
Family
ID=42528556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202546363U Expired - Lifetime CN201533156U (en) | 2009-11-19 | 2009-11-19 | Extra-high-voltage transmission line self-adaptive reclosing control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201533156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286177A (en) * | 2018-11-05 | 2019-01-29 | 苏州未来电器股份有限公司 | A kind of intelligent trouble electric arc follows learning method and system automatically |
| CN111157844A (en) * | 2020-01-06 | 2020-05-15 | 许昌许继软件技术有限公司 | Distribution line self-adaptive reclosing method and fault property identification method and device |
-
2009
- 2009-11-19 CN CN2009202546363U patent/CN201533156U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286177A (en) * | 2018-11-05 | 2019-01-29 | 苏州未来电器股份有限公司 | A kind of intelligent trouble electric arc follows learning method and system automatically |
| CN111157844A (en) * | 2020-01-06 | 2020-05-15 | 许昌许继软件技术有限公司 | Distribution line self-adaptive reclosing method and fault property identification method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108051706B (en) | Fault identification method and system for automatic standby power supply switching device | |
| CN103022994B (en) | Method for achieving fault isolation and recovery of power distribution network with permeability distribution type power supply | |
| CN101483337B (en) | Failure automatic diagnosis and separation apparatus and method for power distribution network overhead line | |
| CN102790378A (en) | Intelligent motor protector and protection method thereof | |
| CN109782094A (en) | A kind of relay protection tripping output clamping in-service monitoring method | |
| CN203368127U (en) | Spare power automatic switching control equipment for transformer substation network | |
| CN201780360U (en) | Operation loop testing circuit for electric power protecting equipment | |
| CN101741145B (en) | Traditional switch intelligent interface device for digitized transformer substation | |
| CN111553554A (en) | Regional spare power automatic switching control system and operation risk management and control method thereof | |
| CN201533156U (en) | Extra-high-voltage transmission line self-adaptive reclosing control device | |
| CN204271609U (en) | 10kV intelligent subscriber boundary switch controller | |
| CN111404259B (en) | Security section power supply system of generator set and switching method thereof | |
| CN202678950U (en) | Demarcation switch controller | |
| CN203014357U (en) | GOOSE message/switch value conversion device for relay protection digitized transformation | |
| CN202550668U (en) | Distributed power distribution network management terminal | |
| CN100544153C (en) | Method for accelerating discrimination reclosing route selection based on two sides TV | |
| CN207705890U (en) | A kind of outlet breaker closing circuit structure | |
| CN201860172U (en) | Automatic looped network type distribution network based on reclosers | |
| CN206865228U (en) | The Standard type block switch protection control device of integrated voltage-type and current mode | |
| CN104269832A (en) | Self-adaptive single-phase recloser control device and method | |
| CN210514491U (en) | Spare power automatic switching test device | |
| CN201549865U (en) | 10-35KV circuit microcomputer protection reclosing device | |
| CN112688418A (en) | Spare power automatic switching device and method for single-bus sectional wiring type transformer substation | |
| CN207442421U (en) | A kind of microcomputer protecting device | |
| CN112952984A (en) | Host, device and method for spare power automatic switching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100721 |
|
| CX01 | Expiry of patent term |