CN112636452B - Wide-area spare power automatic switching implementation method based on GOOSE communication - Google Patents
Wide-area spare power automatic switching implementation method based on GOOSE communication Download PDFInfo
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- CN112636452B CN112636452B CN202011475177.9A CN202011475177A CN112636452B CN 112636452 B CN112636452 B CN 112636452B CN 202011475177 A CN202011475177 A CN 202011475177A CN 112636452 B CN112636452 B CN 112636452B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a wide area spare power automatic switching implementation method based on GOOSE communication, which is characterized in that switching value information of adjacent stations transmitted through a GOOSE channel is utilized, logic of spare power automatic switching software is based on a self-adaptive accurate positioning principle, when a bus is in voltage loss, only a main power supply switch closest to a fault point is jumped off, only a ring point standby power supply switch is switched on, and reliable 'jump forbidding main power supply' information is sent to the direction of a ring opening point, so that the main power supply switch closest to the fault point is jumped off, and then the ring point standby switch is switched on, multiple times of jumping of main power supply sources at each stage can be reliably avoided, and the power supply reliability is improved. According to the invention, necessary switching value information such as locking and opening is transmitted in a GOOSE standard communication mode, the remote spare power automatic switching function is completed by matching with an adjacent side device, the accurate fault positioning and the quick fault isolation can be realized, multiple tripping of main power supply switches at each level is avoided, the power failure time is effectively shortened, and the power supply is quickly recovered.
Description
Technical Field
The invention relates to the technical field of circuit safety, in particular to a wide area spare power automatic switching implementation method based on GOOSE communication.
Background
With the change of the power supply mode of the power grid, the power distribution network transformer substation with the voltage class of 35kV and 10kV generally adopts the wiring mode of series power supply of two stations, three stations or even multiple stations, and adjacent transformer substations are mutually standby power supplies. In this case, the substation often has no backup power source, and thus the conventional backup automatic switching device fails.
As shown in fig. 1, a chain type series supply and open-loop operation connection mode is formed between a power supply station a and a power supply station B, when the power supply station B normally operates, the power supply station B carries loads of three substations, an open-loop point is a 1DL switch, and the power supply station a is a standby power supply. If each station is provided with a traditional incoming line spare power automatic switching device, in the operation mode, only the substation 1 spare power automatic switching device has the incoming line spare power switching condition, and the substations 2 and 3 do not have the incoming line spare power switching condition; when a permanent fault occurs at the point K1, the line protection of the power supply B station acts, and after a 002 switch is tripped, three transformer substation buses connected in series are all out of power, at the moment, the traditional incoming line standby switching scheme can only trip 2DL to 1DL for the transformer substation 1, the incoming line standby switching of the transformer substations 2 and 3 cannot act, and the power supply recovery cannot be realized through the transformer substation 1 because the 2DL switch is tripped, and the final result is that the total stations of the transformer substations 2 and 3 are out of voltage.
In order to solve the problem of automatic switching of the standby power supply under the conditions, the information of the adjacent transformer substations needs to be acquired by means of communication, and the automatic switching of the remote standby power supply is completed. Taking fig. 1 as an example, a remote backup automatic switching device with a communication function is configured, after tripping a main power switch 6DL through a backup automatic switching operation of a transformer substation 3, a remote closing signal is sent to the backup automatic switching device of the transformer substation 1, so that the function of the backup switch 1DL is realized, and meanwhile, measures for ensuring that a main power switch 2DL of the transformer substation 1 and a main power switch 4DL of the transformer substation 2 are not tripped are also taken.
At present, no unified remote spare power automatic switching technical standard is formed at home, remote spare power automatic switching schemes provided by manufacturers are currently customized schemes based on engineering projects, only the 110kV spare power automatic switching part of the Guangdong power grid in the design standard (distribution network) of the safety automatic device of the Guangdong power system, 2016 edition of standards provides a design standard for realizing continuous power supply of multiple stations of a chain type series power supply network for the first time, but the scheme provided by the standard needs to jump off main power supplies of voltage loss stations at all levels through non-selectivity and then recover power supply mode through step-by-step switching-on, the scheme cannot accurately position the position of a fault point, and the problems of relatively long voltage loss time of the last-stage station, multiple tripping-on of main power supplies of switches at all levels, low success rate of spare power automatic switching-on and the like exist.
In the aspect of communication protocol standards, remote spare power automatic switching is basically based on a self-defined standard mode of each manufacturer at the present stage, and sent or received information can only be communicated with a home device and cannot be interoperated with other home devices.
Disclosure of Invention
Aiming at the defects of the existing method, a wide area spare power automatic switching implementation method based on GOOSE communication is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a wide area spare power automatic switching implementation method based on GOOSE communication is constructed, and comprises the following steps:
the automatic bus transfer equipment of the multiple substations which are powered by adopting a multi-substation series connection mode are all provided with GOOSE communication board cards, and GOOSE communication connection between adjacent substations is established;
when the bus of each transformer substation is in voltage loss, the transformer substation closest to the power supply side sends a first signal at least containing the information of 'tripping main power supply switch signal' to the adjacent transformer substation through the GOOSE board card;
after receiving the first signal, the subsequent transformer substations sequentially forward the first signal to the adjacent transformer substations; the transformer substation receiving the first signal does not start the main power supply tripping switch according to the designation of the first signal; the transformer substation which does not receive the first signal starts a main tripping supply switch;
after the substation starting the main supply switch is confirmed to be tripped, the adjacent substation starts the open loop point device and sends a second signal at least containing information of 'starting a distant standby signal';
after receiving the second signal, the subsequent transformer substations sequentially forward the second signal to the adjacent transformer substations; and the open-loop point device of the transformer substation receiving the second signal closes the open-loop point switch according to the voltage loss condition of the transformer substation, and recovers the station voltage of the transformer substation.
And each station device flexibly identifies the position of an open-loop point and the position of a main power supply switch before charging according to the received GOOSE channel information of the adjacent stations and the information collected by the station device, fully charges a spare power switching mode meeting the operation mode, and prepares for the action of the spare power switching device in the next step.
The GOOSE channel information only transmits necessary remote spare power automatic switching information: the system comprises information of an open loop point, information of a jump-forbidden main power supply switch, information of a remote backup switch, and information of hand jump/post-closing discharge.
Before the step of sending the first signal by the substation closest to the power supply side, the method further comprises the step of enabling each spare power automatic switching device to identify the position of an open loop switch and the position of a main power supply switch and fully charging the spare power automatic switching device.
The method is characterized in that switching value information of adjacent stations is transmitted through a GOOSE channel, logic of the spare power automatic switching software is based on a self-adaptive accurate positioning principle, when a bus is in voltage loss, only a main power supply switch closest to a fault point is jumped off, only a ring point standby power supply switch is switched on, reliable 'jump-forbidden main power supply' information is sent to the direction of a ring opening point, the main power supply switch closest to the fault point is jumped off, the ring point standby power supply switch is switched on again, multiple jumping-on phenomena of main power supplies at all levels can be reliably avoided, and power supply reliability is improved. According to the invention, necessary switching value information such as locking and opening is transmitted in a GOOSE standard communication mode, the remote spare power automatic switching function is completed by matching with an adjacent side device, the accurate fault positioning and the quick fault isolation can be realized, multiple tripping of main power supply switches at each level is avoided, the power failure time is effectively shortened, and the power supply is quickly recovered.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic wiring diagram of a distribution network series power supply mode of a wide area spare power automatic switching implementation method based on GOOSE communication provided by the invention.
Fig. 2 is a schematic diagram of an operation logic of a non-open loop point device of a wide area backup automatic switching implementation method based on GOOSE communication according to the present invention.
Fig. 3 is a schematic diagram of an operation logic of an open loop point device of a wide area backup automatic switching implementation method based on GOOSE communication according to the present invention.
Fig. 4 is a schematic diagram of implementation and process of a wide area backup power automatic switching implementation method based on GOOSE communication according to the present invention.
Fig. 5 is a schematic diagram of specific signal transmission of a wide area backup power automatic switching implementation method based on GOOSE communication according to the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 2 and fig. 3, the present invention provides a wide area backup automatic switching implementation method based on GOOSE communication, including:
the automatic bus transfer equipment of the multiple substations which are powered by adopting a multi-substation series connection mode are all provided with GOOSE communication board cards, and GOOSE communication connection between adjacent substations is established;
when the bus of each transformer substation is in voltage loss, the transformer substation closest to the power supply side sends a first signal at least containing the information of 'tripping main power supply switch signal' to the adjacent transformer substation through the GOOSE board card;
after receiving the first signal, the subsequent transformer substations sequentially forward the first signal to the adjacent transformer substations; the transformer substation receiving the first signal does not start the main power supply tripping switch according to the designation of the first signal; the transformer substation which does not receive the first signal starts a main tripping supply switch;
after the substation starting the main supply switch is confirmed to be tripped, the adjacent substation starts the open loop point device and sends a second signal at least containing information of 'starting a distant standby signal';
after receiving the second signal, the subsequent transformer substations sequentially forward the second signal to the adjacent transformer substations; and the open-loop point device of the transformer substation receiving the second signal closes the open-loop point switch according to the voltage loss condition of the transformer substation, and recovers the station voltage of the transformer substation.
And each station device flexibly identifies the position of an open-loop point and the position of a main power supply switch before charging according to the received GOOSE channel information of the adjacent stations and the information collected by the station device, fully charges a spare power switching mode meeting the operation mode, and prepares for the action of the spare power switching device in the next step.
The GOOSE channel information only transmits necessary remote spare power automatic switching information: the system comprises information of an open loop point, information of a jump-forbidden main power supply switch, information of a remote backup switch, and information of hand jump/post-closing discharge.
Before the step of sending the first signal by the substation closest to the power supply side, the method further comprises the step of enabling each spare power automatic switching device to identify the position of an open loop switch and the position of a main power supply switch and fully charging the spare power automatic switching device.
Specifically, before the implementation of the wide area backup power automatic switching implementation method based on GOOSE communication, the wide area backup power automatic switching implementation method needs to be set according to the setting mode of the power supply station and each substation shown in fig. 4. In fig. 4, the power supply stations for supplying power are a power supply station a and a power supply station B, in the embodiment of the present invention, three substations are arranged between two power supply stations, which are identified as a substation 1, a substation 2, and a substation 3, each substation includes an open-loop point switch and a main supply switch, the open-loop point switch and the main supply switch of the substation 1 are identified as 1DL and 2DL, the open-loop point switch and the main supply switch of the substation 2 are identified as 3DL and 4DL, and the open-loop point switch and the main supply switch of the substation 3 are identified as 5DL and 6 DL; the open-loop point switch 1DL of the transformer substation 1 is connected to a power supply A station, and the main power supply switch 6DL of the transformer substation 3 is connected to a power supply B station; in this embodiment, the power B station serves as a main power supply, and the power a station serves as a backup power supply.
If the main power supply line of the power supply B station fails, such as the K1 line failure shown in FIG. 4, the substation 123 loses power; at this time, the substation 3 serves as a substation of a power supply station B closest to the main power supply, the GOOSE board card registered by the backup automatic switching device of the substation sends an instruction meaning of "no jump 4 DL" to the backup automatic switching device of the adjacent substation 2, the backup automatic switching device of the substation 2 executes the instruction and sends an instruction meaning of "no jump 2 DL" to the substation 1, and the substation 1 receives and executes the instruction without jumping 2DL main supply.
After the line of the power supply B station fails, the spare power automatic switching device of the transformer substation 3 is started, the main power switch of the 6DL is tripped out in a delayed mode, after the main power switch is determined to be tripped out, a signal command meaning starting the distant spare power switching is sent to the transformer substation 2, the spare power automatic switching device of the transformer substation 2 does not act, the signal command meaning starting the distant spare power switching and sent by the transformer substation 3 is forwarded to the transformer substation 1, the transformer substation 1 receives the command, the switch point 1DL is closed in a delayed mode, and after the steps, after the line of the power supply B station K1 fails, only the main power switch of the 6DL is switched off, the loop point 1DL is switched off, and the power on of the transformer substation 123 is achieved, so that the efficiency of the spare power automatic switching device reaches the highest. The specific signal transmission process is shown in fig. 5.
The method is characterized in that switching value information of adjacent stations is transmitted through a GOOSE channel, logic of the spare power automatic switching software is based on a self-adaptive accurate positioning principle, when a bus is in voltage loss, only a main power supply switch closest to a fault point is jumped off, only a ring point standby power supply switch is switched on, reliable 'jump-forbidden main power supply' information is sent to the direction of a ring opening point, the main power supply switch closest to the fault point is jumped off, the ring point standby power supply switch is switched on again, multiple jumping-on phenomena of main power supplies at all levels can be reliably avoided, and power supply reliability is improved. According to the invention, necessary switching value information such as locking and opening is transmitted in a GOOSE standard communication mode, the remote spare power automatic switching function is completed by matching with an adjacent side device, the accurate fault positioning and the quick fault isolation can be realized, multiple tripping of main power supply switches at each level is avoided, the power failure time is effectively shortened, and the power supply is quickly recovered.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (1)
1. A wide area spare power automatic switching implementation method based on GOOSE communication is characterized by comprising the following steps:
the automatic bus transfer equipment of the multiple substations which are powered by adopting a multi-substation series connection mode are all provided with GOOSE communication board cards, and GOOSE communication connection between adjacent substations is established;
when the bus of each transformer substation is in voltage loss, the transformer substation closest to the power supply side sends a first signal at least containing the information of 'tripping main power supply switch signal' to the adjacent transformer substation through the GOOSE board card;
after receiving the first signal, the subsequent transformer substations sequentially forward the first signal to the adjacent transformer substations; the transformer substation receiving the first signal does not start the main power supply tripping switch according to the designation of the first signal; the transformer substation which does not receive the first signal starts a main tripping supply switch;
after the substation starting the main supply switch is confirmed to be tripped, starting a device to an open loop point and sending a second signal at least containing information of 'starting distant standby switching signal';
after receiving the second signal, the subsequent transformer substations sequentially forward the second signal to the adjacent transformer substations; the open-loop point device of the transformer substation receiving the second signal closes the open-loop point switch according to the voltage loss condition of the transformer substation, and recovers the station voltage of the transformer substation;
each station device flexibly identifies the position of an open loop point and the position of a main power supply switch before charging according to received GOOSE channel information of adjacent stations and information collected by the station device, fully charges a spare power switching mode meeting the operation mode, and prepares for the action of the spare power switching device in the next step;
the GOOSE channel information only transmits necessary remote spare power automatic switching information: the method comprises the following steps of (1) information of an open loop point, information of a jump-forbidden main power supply switch, information of a remote backup switch, and information of hand jump/post-closing discharge;
before the step of sending the first signal by the substation closest to the power supply side, the method further comprises the step of enabling each spare power automatic switching device to identify the position of the open loop switch and the position of the main power supply switch, and fully charging the spare power automatic switching device.
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| WO2017166735A1 (en) * | 2016-03-31 | 2017-10-05 | 国电南瑞科技股份有限公司 | Power-grid self-healing system and self-healing logic thereof in 110kv chain power-supply mode |
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| CN102231564B (en) * | 2011-07-12 | 2013-09-18 | 国电南瑞南京控制***有限公司 | Stand-by power supply automatic switch method for multi-stage series connection power supply network |
| CN103928985B (en) * | 2014-04-09 | 2015-10-28 | 国家电网公司 | Based on the connection latching logic automatic testing method of GOOSE communication mechanism |
| CN105244992A (en) * | 2015-09-01 | 2016-01-13 | 云南电网有限责任公司大理供电局 | Remote backup power supply automatic switching method and system |
| CN111900803A (en) * | 2020-08-07 | 2020-11-06 | 国网湖北省电力有限公司荆门供电公司 | Recursive remote backup power automatic switching method and device based on GOOSE communication |
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| WO2017166735A1 (en) * | 2016-03-31 | 2017-10-05 | 国电南瑞科技股份有限公司 | Power-grid self-healing system and self-healing logic thereof in 110kv chain power-supply mode |
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