CN110932395B - Communication system of low-voltage intelligent spare power automatic switching - Google Patents
Communication system of low-voltage intelligent spare power automatic switching Download PDFInfo
- Publication number
- CN110932395B CN110932395B CN201911167425.0A CN201911167425A CN110932395B CN 110932395 B CN110932395 B CN 110932395B CN 201911167425 A CN201911167425 A CN 201911167425A CN 110932395 B CN110932395 B CN 110932395B
- Authority
- CN
- China
- Prior art keywords
- bus
- voltage
- load
- low
- automatic switching
- 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.)
- Active
Links
Classifications
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
-
- 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
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
-
- 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
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The embodiment of the invention discloses a communication system of a low-voltage intelligent spare power automatic switching device, which comprises a main station platform for finally receiving and processing data acquired by the low-voltage intelligent spare power automatic switching system, wherein the low-voltage intelligent spare power automatic switching system comprises a low-voltage intelligent spare power automatic switching device which is used for connecting two power distribution room buses and is used for acquiring power distribution room bus line data, the low-voltage intelligent spare power automatic switching device is connected with switches on all lines through wireless communication control to realize the automatic switching function of the spare power automatic switching device, and the low-voltage intelligent spare power automatic switching device is connected with an intelligent low-voltage monitoring terminal through Ethernet wireless communication and is connected with the main station platform through wireless communication. According to the embodiment of the invention, the low-voltage intelligent standby power automatic switching device is used for collecting the electrical data such as the bus voltage, the low-voltage, the switch position, the real-time current and the like of two power distribution rooms, and the collected electrical data is transmitted to the master station platform in real time through a wireless communication technology for analysis and processing.
Description
Technical Field
The embodiment of the invention relates to the technical field of low-voltage automatic spare power switching, in particular to a communication system of low-voltage intelligent automatic spare power switching.
Background
When the power system is excessively high in power generation and power utilization load, a part of secondary loads which are prearranged in the system are needed to be removed according to a preset action load value, so that the system lightens the load and returns to a normal running state.
In the prior art, the bus line data of the power distribution room can be acquired through the low-voltage intelligent standby automatic switching device, but the problem existing in the bus line data cannot be fed back and analyzed in real time only by acquiring the data, and a communication mode capable of realizing real-time understanding and real-time analysis is lacking.
Disclosure of Invention
Therefore, the embodiment of the invention provides a communication system of low-voltage intelligent spare power automatic switching so as to solve the problem that a transformer is damaged due to overload of a power system in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in one aspect of the embodiment of the invention, a communication system of a low-voltage intelligent spare power automatic switching device is provided, which comprises a main station platform for finally receiving and processing data acquired by the low-voltage intelligent spare power automatic switching system, the low-voltage intelligent spare power automatic switching system further comprises a low-voltage intelligent spare power automatic switching device which is used for connecting two power distribution room buses and acquiring power distribution room bus line data, the low-voltage intelligent spare power automatic switching device is connected with switches on all lines through wireless communication control to realize the spare power automatic switching function, and the low-voltage intelligent spare power automatic switching device is connected with an intelligent low-voltage monitoring terminal through Ethernet wireless communication and is connected with the main station platform through wireless communication.
As a preferable scheme of the invention, the low-voltage intelligent standby automatic switching device acquires and controls the acquisition unit on the bus line through the RS485 communication module to acquire the remote measuring and remote signaling signals of each outgoing line loop.
As an optimal scheme of the invention, the intelligent low-voltage monitoring terminal transmits the data analyzed and processed by the intelligent low-voltage monitoring terminal to the master station platform through a 4G channel or a special optical fiber channel.
As a preferable scheme of the invention, the two power distribution rooms are respectively marked as a power distribution room A and a power distribution room B, the low-voltage intelligent spare power automatic switching device is respectively connected with an IA bus of the power distribution room A and an IB bus of the power distribution room in a wireless communication mode, the IA bus is connected with an access transformer A, the IB bus is connected with a transformer B, the IA bus is connected with a plurality of feeder lines A, the IB bus is connected with a plurality of feeder lines B, and the feeder lines A and the feeder lines B are connected to the low-voltage intelligent spare power automatic switching device through an RS485 communication module.
As a preferable scheme of the invention, voltage acquisition modules are arranged on the IA bus and the IB bus; a current acquisition module and a switch A are arranged between the IA bus and the transformer A, a current acquisition module and a switch B are arranged between the IB bus and the transformer B, and the low-voltage intelligent spare power automatic switching device is in wireless communication connection with the switch A and the switch B; and two ends of the transformer A and the transformer B are connected with voltage acquisition modules.
As a preferable scheme of the invention, a current acquisition module and a switch C are connected between the IA bus and the IB bus, and the low-voltage intelligent spare power automatic switching device is in wireless communication connection with the switch C.
As a preferable scheme of the invention, the IA bus and the IB bus run in sections, when the IA bus is out of voltage and leads to the jump start of a transformer, the load value of the out-of-voltage bus and the load value of the adjacent bus are calculated, the sum value of the load of the out-of-voltage bus and the load of the IA bus adjacent to the out-of-voltage bus is compared with the capacity threshold of the transformer to be put into, and whether the capacity meets the required load size is judged;
if the load sum value is smaller than the capacity threshold value, the voltage-loss low-voltage circuit breaker is disconnected, the switch C is closed to complete the automatic switching of the load backup power, and the bus voltage-loss load backup power is reported to be successful;
if the load sum value is larger than the threshold value of the transfer transformer, the load transfer is not immediately carried out, and the XX bus is out-of-voltage and the load backup automatic switching failure signal is sent; comparing the load loops, cutting off unimportant load loops in the feeder line of the power distribution room A until the load meets the capacity of the transformer, and then carrying out load transfer;
when any 400V feeder line carried by the IA bus has line faults, a top jump switch A;
judging the operation/fault state of each outgoing line loop through a line acquisition unit, preparing to reasonably cut off a fault line, or cutting the outgoing line switch through the line acquisition unit, or automatically recovering the switch A through a low-voltage intelligent spare power automatic switching device;
when the switch A is restored, if the switch A trips again, the switch C is automatically closed by the low-voltage intelligent spare power automatic switching device to perform bus spare power automatic switching.
As a preferable scheme of the invention, the IA bus and the IB bus run in sections, when the IB bus is out of voltage and faults to cause the transformer to jump to start, the load value of the out-of-voltage IB bus load and the load value of the IB bus adjacent to the out-of-voltage IB bus load are calculated, and the sum value of the out-of-voltage IB bus load and the load value of the IB bus adjacent to the out-of-voltage IB bus load and the capacity threshold of the transformer to be put into is compared, so as to see whether the capacity meets the required load size;
if the sum of the load of the IB bus and the load value of the IB bus adjacent to the IB bus is smaller than the capacity threshold, disconnecting the voltage-losing IB bus, closing a switch C to finish load transfer, and reporting success of the voltage-losing IB bus load transfer;
if the sum of the load of the IB bus and the load value of the IB bus adjacent to the IB bus is larger than the capacity threshold, the load transfer is not immediately carried out, and the IB bus voltage loss and the load backup automatic switching failure signals are concurrent; comparing the load loops, cutting off the load loops in the feeder line of the power distribution room B until the load meets the capacity of the transformer, and then carrying out load transfer;
when any 400V outgoing line carried by the IB bus has line fault, the switch B is disconnected;
judging the operation/fault state of each outgoing line loop through a line acquisition unit, preparing for load shedding, cutting the switch B through the line acquisition unit, and automatically recovering the composite switch B through a low-voltage intelligent automatic backup switching device, if the switch B is tripped correspondingly again, automatically switching on the switch C through the low-voltage intelligent automatic backup switching device, and performing bus automatic backup switching;
and when the bus B fails, locking the switch C and stopping the spare power automatic switching function.
As a preferred embodiment of the present invention, the bus line data includes bus voltage, switch position, and real-time current.
As a preferable scheme of the invention, the low-voltage intelligent standby automatic switching device comprises an automatic breaking incoming line switch and a breaking outgoing line switch.
Embodiments of the present invention have the following advantages:
according to the embodiment of the invention, the low-voltage intelligent standby power automatic switching device is used for collecting the electrical data such as the bus voltage, the low-voltage, the switch position, the real-time current and the like of two power distribution rooms, and the collected electrical data is transmitted to the master station platform in real time through a wireless communication technology for analysis and processing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a low-voltage intelligent spare power automatic switching device provided by an embodiment of the invention.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the invention provides a communication system of a low-voltage intelligent spare power automatic switching device, which comprises a main station platform for finally receiving and processing data acquired by the low-voltage intelligent spare power automatic switching system, wherein the low-voltage intelligent spare power automatic switching system comprises a low-voltage intelligent spare power automatic switching device which is used for connecting two power distribution room buses and acquiring power distribution room bus line data, the low-voltage intelligent spare power automatic switching device is connected with switches on all lines through wireless communication control to realize the automatic switching function of the spare power automatic switching device, and the low-voltage intelligent spare power automatic switching device is connected with an intelligent low-voltage monitoring terminal through ethernet wireless communication and is connected with the main station platform through wireless communication.
As shown in fig. 2, the low-voltage intelligent standby power automatic switching device acquires and controls an acquisition unit on a bus line through an RS485 communication module to acquire telemetry and remote signaling signals of each outgoing line loop; the intelligent low-voltage monitoring terminal transmits the data analyzed and processed by the intelligent low-voltage monitoring terminal to the master station platform through a 4G channel or a special optical fiber channel.
The intelligent low-voltage automatic backup power switching system comprises a power distribution room A, a power distribution room B, a low-voltage intelligent automatic backup power switching device, an IA bus and an IB bus, wherein the IA bus is connected with the power distribution room A and the IB bus is connected with a transformer A, the IB bus is connected with a transformer B, the IA bus is connected with a plurality of feeder lines A, the IB bus is connected with a plurality of feeder lines B, and the feeder lines A and the feeder lines B are connected to the intelligent low-voltage automatic backup power switching device through an RS485 communication module.
A voltage acquisition module is arranged on the IA bus and the IB bus; a current acquisition module and a switch A are arranged between the IA bus and the transformer A, a current acquisition module and a switch B are arranged between the IB bus and the transformer B, and the low-voltage intelligent spare power automatic switching device is in wireless communication connection with the switch A and the switch B; and two ends of the transformer A and the transformer B are connected with voltage acquisition modules.
As a preferable scheme of the invention, a current acquisition module and a switch C are connected between the IA bus and the IB bus, and the low-voltage intelligent spare power automatic switching device is in wireless communication connection with the switch C.
When the IA bus is in voltage loss or the low-voltage circuit breaker is started in a jump position, if the IA bus is in low voltage and fails to cause the transformer to be started in a jump position, calculating the load value of the voltage-loss bus and the load value of the adjacent bus, and comparing the load of the voltage-loss bus with the capacity threshold of the transformer to be put into, so as to see whether the capacity meets the required load;
if the load sum value is smaller than the capacity threshold value, the voltage-loss low-voltage circuit breaker is disconnected, the 4000 switch is combined to complete the automatic switching of the load backup power, and the bus voltage-loss load backup power is reported to be successful;
if the load sum value is larger than the threshold value of the transfer transformer, the load transfer is not immediately carried out, and the XX bus is out-of-voltage and the load backup automatic switching failure signal is sent; comparing the load loops, cutting off unimportant load loops in the feeder line of the power distribution room A until the load meets the capacity of the transformer, and then carrying out load transfer;
when any 400V feeder line carried by the IA bus has line faults, a top jump switch A;
judging the operation/fault state of each outgoing line loop through a line acquisition unit, preparing to reasonably cut off a fault line, or cutting the outgoing line switch through the line acquisition unit, or automatically recovering the switch A through a low-voltage intelligent spare power automatic switching device;
when the switch A is restored, if the switch A trips again, the switch C is automatically closed by the low-voltage intelligent spare power automatic switching device to perform bus spare power automatic switching.
As a preferable scheme of the invention, the IA bus and the IB bus run in sections, when the IB bus becomes low and fails to cause the jump start of the transformer, the load value of the voltage-losing IB bus and the load value of the adjacent IB bus are calculated, and the voltage-losing IB bus load and the capacity threshold of the transformer to be put into are compared to see whether the capacity meets the required load;
if the load DE and the value of the IB bus are smaller than the capacity threshold, disconnecting the voltage-losing IB bus, closing the switch C to finish load transfer, and reporting success of the voltage-losing IB bus load transfer;
if the sum of the loads of the IB bus is larger than the capacity threshold, the load transfer is not immediately carried out, and the IB bus voltage loss and the load backup automatic switching failure signals are concurrent; comparing the load loops, cutting off the load loops in the feeder line of the power distribution room B until the load meets the capacity of the transformer, and then carrying out load transfer;
when any 400V outgoing line carried by the IB bus has line fault, the switch B is disconnected;
judging the operation/fault state of each outgoing line loop through a line acquisition unit, preparing for load shedding, cutting the switch B through the line acquisition unit, and automatically recovering the composite switch B through a low-voltage intelligent automatic backup switching device, if the switch B is tripped correspondingly again, automatically switching on the switch C through the low-voltage intelligent automatic backup switching device, and performing bus automatic backup switching;
and when the bus B fails, locking the switch C and stopping the spare power automatic switching function.
The bus line data comprises bus voltage, low voltage, switch position and real-time current. The low-voltage intelligent standby automatic switching device comprises an automatic breaking incoming line switch and a breaking outgoing line switch.
The invention can reduce the load to be cut off as much as possible and restore the power supply reliability as soon as possible, the load to be cut off is divided into a plurality of wheels according to the size of the system load, and the load is cut off in sequence in the overload process, so that the phenomenon that the transformer is damaged due to overload of the power system is prevented.
According to the embodiment of the invention, the low-voltage intelligent standby power automatic switching device is used for collecting the electrical data such as the bus voltage, the low-voltage, the switch position, the real-time current and the like of two power distribution rooms, and the collected electrical data is transmitted to the master station platform in real time through a wireless communication technology for analysis and processing.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (4)
1. The communication system of the low-voltage intelligent spare power automatic switching device is characterized by comprising a main station platform for finally receiving and processing data acquired by the low-voltage intelligent spare power automatic switching system, the low-voltage intelligent spare power automatic switching system further comprises a low-voltage intelligent spare power automatic switching device which is used for connecting two power distribution room buses and collecting power distribution room bus line data, the low-voltage intelligent spare power automatic switching device is connected with switches on all lines through wireless communication control to realize the automatic switching function of the spare power automatic switching device, and the low-voltage intelligent spare power automatic switching device is connected with an intelligent low-voltage monitoring terminal through Ethernet wireless communication and is connected with the main station platform through wireless communication;
the intelligent low-voltage monitoring terminal transmits the data analyzed and processed by the intelligent low-voltage monitoring terminal to the master station platform through a 4G channel or a special optical fiber channel;
the low-voltage intelligent standby automatic switching device controls an acquisition unit on a bus line through an RS485 communication module to acquire telemetry and remote signaling signals of each outgoing line loop;
the two power distribution rooms are respectively marked as a power distribution room A and a power distribution room B, the low-voltage intelligent spare power automatic switching device is respectively connected with an IA bus of the power distribution room A and an IB bus of the power distribution room in a wireless communication mode, the IA bus is connected with an access transformer A, the IB bus is connected with a transformer B, the IA bus is connected with a plurality of feeder lines A, the IB bus is connected with a plurality of feeder lines B, and the feeder lines A and the feeder lines B are connected to the low-voltage intelligent spare power automatic switching device through an RS485 communication module;
a voltage acquisition module is arranged on the IA bus and the IB bus; a current acquisition module and a switch A are arranged between the IA bus and the transformer A, a current acquisition module and a switch B are arranged between the IB bus and the transformer B, and the low-voltage intelligent spare power automatic switching device is in wireless communication connection with the switch A and the switch B; the two ends of the transformer A and the transformer B are connected with voltage acquisition modules;
a current acquisition module and a switch C are connected between the IA bus and the IB bus, and the low-voltage intelligent spare power automatic switching device is in wireless communication connection with the switch C;
the IA bus and the IB bus run in sections, when the voltage of the IA bus is lost and the transformer is started in a jump mode, the load value of the voltage-lost IA bus and the load value of the adjacent IA bus are calculated, the sum value of the voltage-lost IA bus and the load value of the adjacent IA bus is compared with the capacity threshold of the transformer to be put into, and whether the capacity threshold meets the required load or not is judged;
if the sum of the load of the IA bus and the load of the adjacent IA bus is smaller than the capacity threshold, disconnecting the voltage-losing IA bus, closing a switch C to complete the load backup automatic switching, and reporting that the bus voltage-losing load backup automatic switching is successful;
if the sum of the load of the IA bus and the load of the adjacent IA bus is larger than the capacity threshold, the load transfer is not immediately carried out, and an IA bus voltage loss and load backup automatic switching failure signal is generated; comparing the load loops, cutting off the load loops in the feeder line of the power distribution room A until the load meets the capacity of the transformer, and then carrying out load transfer;
when any 400V feeder line carried by the IA bus has line fault, the switch A is disconnected;
judging the operation/fault state of each outgoing line loop through a line acquisition unit, preparing to cut off a fault line, or disconnecting an outgoing line switch of the outgoing line loop through the line acquisition unit, or automatically recovering a switch A through a low-voltage intelligent spare power automatic switching device;
when the switch A is restored, if the switch A trips again, the switch C is automatically closed by the low-voltage intelligent spare power automatic switching device to perform bus spare power automatic switching.
2. The communication system of the low-voltage intelligent spare power automatic switching device according to claim 1, wherein,
the IA bus and the IB bus run in sections, when the IB bus is out of voltage and faults to cause the transformer to jump to start, the load value of the out-of-voltage IB bus and the load value of the adjacent IB bus are calculated, the sum value of the out-of-voltage IB bus load and the load value of the adjacent IB bus is compared with the capacity threshold of the transformer to be put into, and whether the capacity meets the required load or not is judged;
if the sum of the load of the IB bus and the load value of the IB bus adjacent to the IB bus is smaller than the capacity threshold, disconnecting the voltage-losing IB bus, closing a switch C to finish load transfer, and reporting success of the voltage-losing IB bus load transfer;
if the sum of the load of the IB bus and the load value of the IB bus adjacent to the IB bus is larger than the capacity threshold, the load transfer is not immediately carried out, and the IB bus voltage loss and the load backup automatic switching failure signals are concurrent; comparing the load loops, cutting off the load loops in the feeder line of the power distribution room B until the load meets the capacity of the transformer, and then carrying out load transfer;
when any 400V outgoing line carried by the IB bus has line fault, the switch B is disconnected;
judging the operation/fault state of each outgoing line loop through a line acquisition unit, preparing for load shedding, cutting the switch B through the line acquisition unit, and automatically recovering the composite switch B through a low-voltage intelligent automatic backup switching device, if the switch B is tripped correspondingly again, automatically switching on the switch C through the low-voltage intelligent automatic backup switching device, and performing bus automatic backup switching;
and when the IB bus fails, locking the switch C and stopping the spare power automatic switching function.
3. The communication system of claim 1, wherein the bus line data includes bus voltage, switch position, and real-time current.
4. The communication system of claim 1, wherein the low-voltage intelligent automatic backup power switching device comprises an automatic disconnection incoming line switch and a disconnection outgoing line switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911167425.0A CN110932395B (en) | 2019-11-25 | 2019-11-25 | Communication system of low-voltage intelligent spare power automatic switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911167425.0A CN110932395B (en) | 2019-11-25 | 2019-11-25 | Communication system of low-voltage intelligent spare power automatic switching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110932395A CN110932395A (en) | 2020-03-27 |
| CN110932395B true CN110932395B (en) | 2023-09-15 |
Family
ID=69850972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911167425.0A Active CN110932395B (en) | 2019-11-25 | 2019-11-25 | Communication system of low-voltage intelligent spare power automatic switching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110932395B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697580A (en) * | 2020-07-01 | 2020-09-22 | 广东电网有限责任公司 | Low-voltage spare power automatic switching device suitable for load transfer of power distribution room |
| CN112152205A (en) * | 2020-09-08 | 2020-12-29 | 南京德尔森电气有限公司 | Intelligent low-voltage automatic switching management unit and management method |
| CN114336947A (en) * | 2022-01-04 | 2022-04-12 | 中国电建集团成都勘测设计研究院有限公司 | Automatic standby power supply switching system and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1534636A1 (en) * | 1987-10-26 | 1990-01-07 | Киевский Институт Инженеров Гражданской Авиации Им.60-Летия Ссср | Quick-acting device for automatic switching-on of standby power source |
| CN101714777A (en) * | 2009-10-14 | 2010-05-26 | 广东电网公司肇庆供电局 | Control system for automatically switching wide areas of wide area backup power supply of electric power system |
| CN104319890A (en) * | 2014-10-31 | 2015-01-28 | 国家电网公司 | Intelligent low-voltage load automatic transfer control device and control method thereof |
| CN206452113U (en) * | 2016-09-29 | 2017-08-29 | 广东电网有限责任公司珠海供电局 | A kind of many closed loop interconnection power distribution network wiring constructions of double-strand and its electric power system |
| CN207053244U (en) * | 2017-06-20 | 2018-02-27 | 国家电网公司 | A kind of stability control equipment and backup auto-activating device interlock control apparatus and system |
| CN108963959A (en) * | 2018-07-13 | 2018-12-07 | 河南汇纳科技有限公司 | Centralized area power grid prepared auto restart control system and control method based on LoRa |
| CN109639477A (en) * | 2018-12-06 | 2019-04-16 | 国网陕西省电力公司宝鸡供电公司 | A kind of secondary device in-service monitoring and analysis system and method |
-
2019
- 2019-11-25 CN CN201911167425.0A patent/CN110932395B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1534636A1 (en) * | 1987-10-26 | 1990-01-07 | Киевский Институт Инженеров Гражданской Авиации Им.60-Летия Ссср | Quick-acting device for automatic switching-on of standby power source |
| CN101714777A (en) * | 2009-10-14 | 2010-05-26 | 广东电网公司肇庆供电局 | Control system for automatically switching wide areas of wide area backup power supply of electric power system |
| CN104319890A (en) * | 2014-10-31 | 2015-01-28 | 国家电网公司 | Intelligent low-voltage load automatic transfer control device and control method thereof |
| CN206452113U (en) * | 2016-09-29 | 2017-08-29 | 广东电网有限责任公司珠海供电局 | A kind of many closed loop interconnection power distribution network wiring constructions of double-strand and its electric power system |
| CN207053244U (en) * | 2017-06-20 | 2018-02-27 | 国家电网公司 | A kind of stability control equipment and backup auto-activating device interlock control apparatus and system |
| CN108963959A (en) * | 2018-07-13 | 2018-12-07 | 河南汇纳科技有限公司 | Centralized area power grid prepared auto restart control system and control method based on LoRa |
| CN109639477A (en) * | 2018-12-06 | 2019-04-16 | 国网陕西省电力公司宝鸡供电公司 | A kind of secondary device in-service monitoring and analysis system and method |
Non-Patent Citations (4)
| Title |
|---|
| 35th International Telecommunications Energy Conference, SMART POWER AND EFFICIENCY》.2013,第236-242页. * |
| Richard Mehl,et al..Comparison of advantages and disadvantages of electronic and mechanical Protection systems for higher Voltage DC 400 V.《Intelec 2013 * |
| 王清海等.智能低压负荷转供装置研究.《机电工程技术》.2019,第48卷(第7期),第220-222页. * |
| 胡雯等.基于物联网的智能电网信息化建设研究.《电力信息化》.2013,第11卷(第4期),第51-54页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110932395A (en) | 2020-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110932395B (en) | Communication system of low-voltage intelligent spare power automatic switching | |
| CN104518564A (en) | Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method | |
| CN109713794B (en) | Distributed intelligent self-recovery system and method | |
| CN107612148B (en) | Distribution network overhead line fault self-healing method and system | |
| CN105281304A (en) | Quick feeder fault positioning and isolating method | |
| CN110912253B (en) | Low-voltage intelligent spare power automatic switching system | |
| CN110994693A (en) | Uninterrupted parallel operation grid-connected system and grid-connected method of medium-voltage power supply vehicle | |
| CN103855810A (en) | Self-healing security and stability system for 110KV substation | |
| CN105391038A (en) | Area protection based intelligent terminal in power network and control method for intelligent terminal | |
| CN109510192B (en) | Power distribution network and self-healing method thereof | |
| CN104810919A (en) | Automatic switching device and method based on standby power supply | |
| CN101860075A (en) | Three-power supply automatic switching device | |
| CN204156594U (en) | A kind of region backup auto-activating device | |
| CN103532221A (en) | Spare-power automatic switching implementation method of lines under wiring and operating modes of self-adaptive 330kV substation | |
| CN105006881A (en) | Automatic put and automatic recovery control system | |
| CN110336272B (en) | Low-voltage interconnection switch box and interconnection switch power supply conversion method and device | |
| CN110635562A (en) | Self-adaptive area spare power automatic switching device and self-adaptive area spare power automatic switching method | |
| CN211377605U (en) | Uninterrupted parallel operation grid-connected system of medium-voltage power supply vehicle | |
| CN108493928B (en) | Distributed feeder automation distribution line topology ad hoc network method | |
| CN105449835A (en) | Regional spare power automatic switch method | |
| CN201656555U (en) | Three-power-supply automatic switching-over device | |
| CN112751333B (en) | Intelligent low-voltage switch cabinet for rail transit and control method | |
| CN216390588U (en) | Double-direct-current system control circuit | |
| CN212323734U (en) | Manual and automatic integrated switching device and voltage switching control mode switching circuit for railway traction substation | |
| CN114498898B (en) | Power supply line power attribute identification and judgment method and automatic switching method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |