CN114243697A - Intelligent load transfer method based on multi-source mutual check - Google Patents

Intelligent load transfer method based on multi-source mutual check Download PDF

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Publication number
CN114243697A
CN114243697A CN202111595050.5A CN202111595050A CN114243697A CN 114243697 A CN114243697 A CN 114243697A CN 202111595050 A CN202111595050 A CN 202111595050A CN 114243697 A CN114243697 A CN 114243697A
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fault
load transfer
interface
line
transfer
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Inventor
沈主浮
杨振睿
钟鸣
王斌
蔡斌
周鑫
石英超
刘烨
王巨波
孙辰
曹芸
魏文
陈侃黎
卢春林
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State Grid Shanghai Electric Power Co Ltd
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State Grid Shanghai Electric Power Co Ltd
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Priority to CN202111595050.5A priority Critical patent/CN114243697A/en
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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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • 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
    • H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
    • 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
    • H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40—Display of information, e.g. of data or controls
    • 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

Abstract

The invention discloses an intelligent load transfer method based on multi-source mutual check, which comprehensively checks data accessed to a plurality of systems, and respectively accesses an SCADA system, a PMS system and a distribution automation system to a visual platform; the switching signal data is mainly power distribution automation system data and is subjected to auxiliary verification by using other source data; the capacity and load data mainly comprise PMS system data, other data are subjected to auxiliary verification, power balance and power failure recovery data are integrated with distribution automation system data, and uncovered distribution automation is calculated by using first section data in an SCADA system. And forming a finished information chain through multi-source mutual check, and then performing calculation of the optimal solution according to the complete information chain. By adopting the scheme, the manual processing mode of load transfer can be thoroughly solved, the load transfer can be optimally and automatically processed, and the optimal transfer scheme is obtained in mutual check and verification of the existing automatic system.

Description

Intelligent load transfer method based on multi-source mutual check
Technical Field
The invention relates to an intelligent load transfer method based on multi-source mutual check.
Background
At present, the ignition plate sold in the market has no visibility and poor air permeability, and can not meet the use requirements of people.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an intelligent load transfer method based on multi-source mutual check, which can thoroughly solve the manual processing mode of load transfer, can perform optimized automatic processing on the load transfer and is an optimal transfer scheme obtained in mutual check verification by fully utilizing the existing automatic system.
The technical scheme for realizing the purpose is as follows: an intelligent load transfer method based on multi-source mutual check comprises the following steps:
s1, the visual platform acquires line load telemetering data, switch remote signaling data, alarm signals and remote control signals from the SCADA system;
s2, connecting an interface 2 and an interface 3 of the visualization platform with the PMS respectively, and acquiring fault panoramic information and a fault disposal scheme returned by the PMS through the interface 2 by the visualization platform; the visual platform acquires a fault point, an isolation point, a supply transfer point and a supply transfer path returned by the PMS through the interface 3;
s3, connecting an interface 1 of a visual platform with the power distribution automation system, and acquiring all fault indicators and current thereof contained in a fault line returned by the power distribution automation system through the interface 1 by the visual platform;
s4, the visual platform checks according to the accident trip judgment rule and sends a fault indicator request to the distribution automation system through an interface 1; sending fault panoramic information to the PMS through an interface 2;
s5, the visual platform checks according to the fault indicator state judgment rule, and sends a fault point and load transfer path request to the PMS through an interface 3;
and S6, the visualization platform generates a fault line load transfer scheme and a fault handling scheme according to the fault line load transfer rule.
The above intelligent load transfer method based on multi-source mutual core, wherein the visualization platform sends the name of the fault line and the time of occurrence of the fault to the distribution automation system through the interface 1, and the distribution automation system returns all fault indicators, all three currents of the fault indicators and the corresponding time of each current value on the fault line to the visualization platform through the interface 1 after receiving the fault line name and the time of occurrence of the fault.
The above intelligent load transfer method based on multi-source mutual core, wherein the visualization platform sends a fault line to the PMS system through the interface 3, and the PMS system returns a fault point and coordinates thereof and a transfer path to the visualization platform through the interface 3 after receiving the fault line.
The above intelligent load transfer method based on multi-source mutual core, wherein the SCADA system directly provides an accident trip signal to the visualization platform.
In the foregoing intelligent load transfer method based on multi-source mutual check, in step S5, the fault indicator status determination rule is:
when the maximum current value of the fault prompter is greater than the preset value within one hour before the fault occurrence time, the state of the indicator turns red;
when the maximum current value of the fault indicator is less than or equal to the preset value within one hour before the fault occurrence time, the state of the indicator is not turned red.
In the above intelligent load transferring method based on multi-source mutual check, in step S2, the fault point is a section of line between the last red-turning fault indicator and the first non-red-turning fault indicator.
In the foregoing intelligent load transfer method based on multi-source mutual core, in step S2, the isolation point is the first breaker downstream of the fault point.
In the above-mentioned intelligent load transfer method based on multi-source mutual core, in step S2, the transfer paths are all paths connected to other lines through the open point connected to the faulty line.
In the foregoing intelligent load transfer method based on multi-source mutual core, in step S6, the fault line load transfer scheme includes the following steps:
a. calculating the load rate before and after the transfer of each transfer path: calculating the load rate after power supply according to the current values and rated current values of the current line, the current winding, the opposite-end line and the opposite-end winding;
b. comparing load rates of the opposite-end circuit and the main transformer after each transfer path is transferred, and if the opposite-end circuit or the main transformer after the transfer path is overloaded, the transfer path is not established;
c. and under the remaining established transfer paths, arranging the load rates of the opposite-end line and the main transformer from small to large after transfer, wherein the minimum load rate is the optimal fault line load transfer scheme.
In the foregoing intelligent load transfer method based on multi-source mutual core, in step S6, the fault handling scheme includes the following scheme:
a. opening the circuit breaker on the isolation point column;
b. checking the open position of the circuit breaker on the isolation point column;
c. turning on the power supply point pole-mounted circuit breaker;
d. the breaker on the transfer point column is checked to be in the on position.
By adopting the technical scheme of the intelligent load transfer method based on multi-source mutual core, when an accident occurs, the current of the fault indicator is obtained through the interface with the power distribution automation master station, the state judgment of the fault indicator is carried out, the load transfer scheme is calculated by combining SCADA operation data, the transfer scheme integrates multiple links such as various switching states, transfer capacity, power balance and the number of users, and finally the fault handling scheme is obtained; the method can thoroughly solve the manual processing mode of load transfer, can perform optimized automatic processing on the load transfer, and is an optimal transfer scheme obtained in mutual check and verification by fully utilizing the existing automatic system.
Drawings
FIG. 1 is a schematic flow chart of an intelligent load transfer method based on multi-source mutual check according to the present invention;
fig. 2 is a schematic diagram of the communication between the visualization platform and the power distribution automation system via the interface 1;
fig. 3 is a schematic diagram of communication between the visualization platform and the PMS system through the interface 3;
fig. 4 is an example of calculation of load ratios before and after transfer of each transfer path.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description is given with reference to the accompanying drawings:
referring to fig. 1, fig. 2 and fig. 3, an embodiment of the present invention provides an intelligent load transfer method based on multi-source mutual core, including the following steps:
s1, the visual platform 10 acquires line load telemetering data, switch remote signaling data, alarm signals and remote control signals from the SCADA system 20;
s2, connecting an interface 2 and an interface 3 of the visualization platform 10 with the PMS 30 respectively, and acquiring fault panoramic information and a fault handling scheme returned by the PMS 30 through the interface 2 by the visualization platform 10; the visualization platform 10 acquires a fault point, an isolation point, a transfer point and a transfer path returned by the PMS 30 through the interface 3; the visualization platform 10 sends a fault line to the PMS system 30 through the interface 3, and the PMS system 30 returns a fault point and coordinates thereof and a transfer path to the visualization platform 10 through the interface 3 after receiving the fault line.
S3, connecting interface 1 of visualization platform 10 with distribution automation system 40, and acquiring, by visualization platform 10 through interface 1, all fault indicators and their currents contained in the fault line returned by distribution automation system 40; specifically, the visualization platform sends the name of the fault line and the fault occurrence time to the distribution automation system 40 through the interface 1, and the distribution automation system 40 returns all fault indicators, all fault indicators and the corresponding time of each current value to the visualization platform 10 through the interface 1 after receiving the fault line name and the fault occurrence time;
s4, the visual platform 10 checks according to the accident trip judgment rule and sends a fault indicator request to the power distribution automation system 40 through the interface 1; sending fault panoramic information to the PMS 30 through the interface 2;
s5, the visual platform 10 checks according to the fault indicator state judgment rule, and sends a fault point and load transfer path request to the PMS 30 through the interface 3;
and S6, the visualization platform 10 generates a fault line load transfer scheme and a fault handling scheme according to the fault line load transfer rule.
According to the intelligent load transfer method based on multi-source mutual check, the SCADA system 20 directly provides accident tripping signals to the visual platform 10.
In step S5, the failure indicator state determination rule is:
when the maximum current value of the fault prompter is greater than the preset value within one hour before the fault occurrence time, the state of the indicator turns red;
when the maximum current value of the fault indicator is less than or equal to the preset value within one hour before the fault occurrence time, the state of the indicator is not turned red.
In step S2, the fault point is a segment of the line between the last reddened and the first non-reddened fault indicator. The isolation point is the first circuit breaker downstream of the fault point. The switch-over path is all paths connected to other lines through the open point to which the faulty line is connected.
In step S6, the fault line load transfer scheme includes the following steps:
a. calculating the load rate before and after the transfer of each transfer path: referring to fig. 4, the load factor after power transfer is calculated according to the current values and rated current values of the current line, the current winding, the opposite-end line, and the opposite-end winding;
b. comparing load rates of the opposite-end circuit and the main transformer after each transfer path is transferred, and if the opposite-end circuit or the main transformer after the transfer path is overloaded, the transfer path is not established;
c. and under the remaining established transfer paths, arranging the load rates of the opposite-end line and the main transformer from small to large after transfer, wherein the minimum load rate is the optimal fault line load transfer scheme.
In step S6, the failure handling scheme includes the following scheme:
a. opening the circuit breaker on the isolation point column;
b. checking the open position of the circuit breaker on the isolation point column;
c. turning on the power supply point pole-mounted circuit breaker;
d. the breaker on the transfer point column is checked to be in the on position.
According to the intelligent load transfer and supply method based on multi-source mutual core, when an accident occurs, the current of a fault indicator is obtained through an interface with a power distribution automation master station, the state judgment of the fault indicator is carried out, a load transfer and supply scheme is calculated by combining operation data of an SCADA system, the transfer scheme integrates multiple links such as switching states, transfer and supply capacity, power balance and the number of users, and finally a fault handling scheme is obtained.
Referring to fig. 1, a plurality of system Data are accessed for comprehensive verification, And an SCADA (Supervisory Control And Data Acquisition, Data Acquisition And Supervisory Control system), a PMS (power production management system) And a distribution automation system are respectively accessed to the visualization platform 10. The switching signal data is mainly the data of the distribution automation system 40, and the auxiliary verification is carried out by using other source data; the capacity and load data are mainly PMS system 30 data, other data are subjected to auxiliary verification, power balance and power failure recovery data are integrated with the distribution automation system 30 data, and uncovered distribution automation is calculated by using the first section of data in the SCADA system 20. And forming a finished information chain through multi-source mutual check, and then performing calculation of the optimal solution according to the complete information chain. By adopting the scheme, the manual processing mode of load transfer can be thoroughly solved, the load transfer can be optimally and automatically processed, and the optimal transfer scheme is obtained in mutual check and verification of the existing automatic system.
According to the intelligent load transfer method based on multi-source mutual core, the optimal solution calculation scheme of the optimal fault line load transfer scheme is optimized by an algorithm based on a heuristic algorithm, known conditions such as maximum power restoration capacity, economic optimization, highest safety, fastest efficiency and the like are set as heuristic settings, and an integrated information chain is combined to calculate the optimal solution result.
Wherein, the heuristic algorithm is as follows: available tie switches are searched according to the power loss area information, and one or more tie switch views are used to completely recover all power loss loads in combination with information such as electrical distance, transfer capacity and the like. The heuristic algorithm can effectively reduce the solving control according to the rule and has good universality on networks with different structures; but the optimality of the scheme can not be achieved, the quality of the obtained solution is very dependent on the initial state of the network, and in addition, the establishment of a heuristic search rule also affects the solution quality if the establishment is not reasonable enough.
The data access condition of the visualization platform is shown in table 1:
Figure BDA0003430848000000061
TABLE 1
The invention relates to an intelligent load transfer method based on multi-source mutual check, which relates to the following relevant business rules:
(1) and (3) fault tripping judgment:
SCADA directly provides accident trip signal
(2) The fault indicator status determination rules are shown in table 2:
Figure BDA0003430848000000062
TABLE 2
(3) And (3) fault point judgment: the fault point is a section of line between the last reddened and the first non-reddened fault indicator.
(4) And (4) judging the isolation points: the isolation point is the first circuit breaker downstream of the fault point.
(5) Judging a transfer path: all paths connected to other lines through the open point to which the faulty line is connected.
(6) A supply transfer scheme: the fault line load transfer scheme comprises the following steps:
a. calculating the load rate before and after the transfer of each transfer path: calculating the load rate after power supply according to the current values and rated current values of the current line, the current winding, the opposite-end line and the opposite-end winding;
b. comparing load rates of the opposite-end circuit and the main transformer after each transfer path is transferred, and if the opposite-end circuit or the main transformer after the transfer path is overloaded, the transfer path is not established;
c. and under the remaining established transfer paths, arranging the load rates of the opposite-end line and the main transformer from small to large after transfer, wherein the minimum load rate is the optimal fault line load transfer scheme.
In step S6, the failure handling scheme includes the following scheme:
a. opening the circuit breaker on the isolation point column;
b. checking the open position of the circuit breaker on the isolation point column;
c. turning on the power supply point pole-mounted circuit breaker;
d. the breaker on the transfer point column is checked to be in the on position.
The final generated fault handling scheme in the intelligent load transfer method based on multi-source mutual check is shown in table 3:
Figure BDA0003430848000000071
TABLE 3
In summary, the intelligent load transfer method based on multi-source mutual check of the present invention forms a completed information chain through multi-source mutual check, and then performs calculation of the transfer optimal solution according to the complete information chain.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims (10)

1. An intelligent load transfer method based on multi-source mutual check is characterized by comprising the following steps:
s1, the visual platform acquires line load telemetering data, switch remote signaling data, alarm signals and remote control signals from the SCADA system;
s2, connecting an interface 2 and an interface 3 of the visualization platform with the PMS respectively, and acquiring fault panoramic information and a fault disposal scheme returned by the PMS through the interface 2 by the visualization platform; the visual platform acquires a fault point, an isolation point, a supply transfer point and a supply transfer path returned by the PMS through the interface 3;
s3, connecting an interface 1 of a visual platform with the power distribution automation system, and acquiring all fault indicators and current thereof contained in a fault line returned by the power distribution automation system through the interface 1 by the visual platform;
s4, the visual platform checks according to the accident trip judgment rule and sends a fault indicator request to the distribution automation system through an interface 1; sending fault panoramic information to the PMS through an interface 2;
s5, the visual platform checks according to the fault indicator state judgment rule, and sends a fault point and load transfer path request to the PMS through an interface 3;
and S6, the visualization platform generates a fault line load transfer scheme and a fault handling scheme according to the fault line load transfer rule.
2. The intelligent load transfer method based on multi-source mutual core according to claim 1, wherein the visualization platform sends the name of the fault line and the time of occurrence of the fault to the distribution automation system through an interface 1, and the distribution automation system returns all fault indicators, all three currents of the fault indicators and the time corresponding to each current value on the fault line to the visualization platform through the interface 1 after receiving the fault line name and the time of occurrence of the fault.
3. The intelligent load transfer method based on multi-source mutual core according to claim 1, wherein the visual platform sends a fault line to the PMS system through an interface 3, and the PMS system returns a fault point and coordinates thereof and a transfer path to the visual platform through the interface 3 after receiving the fault line.
4. The intelligent load transfer method based on multi-source mutual-core as claimed in claim 1, wherein the SCADA system directly provides accident trip signal to the visualization platform.
5. The multi-source mutual-core-based intelligent load transfer method according to claim 1, wherein in step S5, the fault indicator status determination rule is:
when the maximum current value of the fault prompter is greater than the preset value within one hour before the fault occurrence time, the state of the indicator turns red;
when the maximum current value of the fault indicator is less than or equal to the preset value within one hour before the fault occurrence time, the state of the indicator is not turned red.
6. The multi-source mutual core-based intelligent load transfer method according to claim 5, wherein in step S2, the fault point is a section of line between the last reddened fault indicator and the first non-reddened fault indicator.
7. The multi-source mutual-core-based intelligent load transfer method according to claim 1, wherein in step S2, the isolation point is a first breaker downstream of the fault point.
8. The intelligent load transfer method based on multi-source mutual check of claim 1, wherein in step S2, the transfer paths are all paths connected to other lines through the open point connected to the faulty line.
9. The intelligent load transfer method based on multi-source mutual core according to claim 1, wherein in step S6, the fault line load transfer scheme includes the following steps:
a. calculating the load rate before and after the transfer of each transfer path: calculating the load rate after power supply according to the current values and rated current values of the current line, the current winding, the opposite-end line and the opposite-end winding;
b. comparing load rates of the opposite-end circuit and the main transformer after each transfer path is transferred, and if the opposite-end circuit or the main transformer after the transfer path is overloaded, the transfer path is not established;
c. and under the remaining established transfer paths, arranging the load rates of the opposite-end line and the main transformer from small to large after transfer, wherein the minimum load rate is the optimal fault line load transfer scheme.
10. The multi-source mutual core-based intelligent load transfer method according to claim 1, wherein in step S6, the fault handling scheme includes the following scheme:
a. opening the circuit breaker on the isolation point column;
b. checking the open position of the circuit breaker on the isolation point column;
c. turning on the power supply point pole-mounted circuit breaker;
d. the breaker on the transfer point column is checked to be in the on position.
CN202111595050.5A 2021-12-24 2021-12-24 Intelligent load transfer method based on multi-source mutual check Pending CN114243697A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104280666A (en) * 2014-10-29 2015-01-14 国网上海市电力公司 Auxiliary load transfer decision system used after medium voltage distribution network line breaks down
CN104377692A (en) * 2014-11-11 2015-02-25 国家电网公司 Distribution network 10 kV line load transfer path on-line selection system
CN106451422A (en) * 2016-09-30 2017-02-22 国网江西省电力公司电力科学研究院 Simple 10kV distribution line load transfer risk assessment platform

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104280666A (en) * 2014-10-29 2015-01-14 国网上海市电力公司 Auxiliary load transfer decision system used after medium voltage distribution network line breaks down
CN104377692A (en) * 2014-11-11 2015-02-25 国家电网公司 Distribution network 10 kV line load transfer path on-line selection system
CN106451422A (en) * 2016-09-30 2017-02-22 国网江西省电力公司电力科学研究院 Simple 10kV distribution line load transfer risk assessment platform

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