CN113471959A - Multi-platform-area flexible interconnection control method and system based on platform-area intelligent fusion terminal - Google Patents

Multi-platform-area flexible interconnection control method and system based on platform-area intelligent fusion terminal Download PDF

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Publication number
CN113471959A
CN113471959A CN202110591102.5A CN202110591102A CN113471959A CN 113471959 A CN113471959 A CN 113471959A CN 202110591102 A CN202110591102 A CN 202110591102A CN 113471959 A CN113471959 A CN 113471959A
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transformer
area
interconnection
ineq
power
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刘文龙
吕志鹏
刘海涛
吕广宪
周珊
宋振浩
刘梦
李文鹤
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China Online Shanghai Energy Internet Research Institute Co ltd
State Grid Corp of China SGCC
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China Online Shanghai Energy Internet Research Institute Co ltd
State Grid Corp of China SGCC
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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
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/48—Controlling the sharing of the in-phase component
    • 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
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management

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  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention discloses a multi-district flexible interconnection control method and system based on a district intelligent fusion terminal, which consider the existing power distribution network/district management architecture, establish the communication connection between the intelligent fusion terminal and a power distribution network master station management system and each district interconnection device through a communication module facing the district flexible interconnection application, use the district intelligent fusion terminal as a pivot node, realize the cloud edge end management architecture and improve the multi-district flexible interconnection operation management level; the method comprises the steps of determining a district interconnection operation mode according to a district operation state, determining a district flexible interconnection power scheduling instruction according to the district interconnection operation mode and operation data of the district, and issuing the district flexible interconnection power scheduling instruction to each district interconnection device to be executed through a district intelligent fusion terminal, so that a cloud edge end management mechanism of a power distribution network master station management system, the district intelligent fusion terminal and the district interconnection device is fused, and the management and control efficiency of flexible interconnection of multiple districts can be effectively improved.

Description

Multi-platform-area flexible interconnection control method and system based on platform-area intelligent fusion terminal
Technical Field
The invention relates to the technical field of power distribution, in particular to a multi-station flexible interconnection control method and system based on an intelligent station area fusion terminal.
Background
With the continuous development of distributed resources such as electric vehicle charging piles, distributed new energy, energy storage and flexible loads, new challenges are brought to the operation control, capacity increasing and power utilization, resource interaction and the like of the existing transformer area. The flexible interconnection of the multiple regions is a novel technical method applied to large-scale distributed resource access transformer regions, can flexibly realize energy mutual aid, resource sharing and direct current distribution and utilization of different transformer regions, and improves the adaptability of the transformer regions to large-scale distributed resource access. However, at present, flexible interconnection management of multiple regions is not included in the existing power distribution network master station management system, an energy management system and an information acquisition device need to be newly configured, management complexity and operation and maintenance cost are increased, and a coordination mechanism with the power distribution network master station management system needs to be formulated.
Therefore, research on a multi-region flexible interconnection method and mechanism is urgently needed.
Disclosure of Invention
The invention provides a multi-platform area flexible interconnection control method and system based on an intelligent platform area fusion terminal, and aims to solve the problem of how to perform flexible interconnection control on a plurality of platform areas.
In order to solve the above problem, according to an aspect of the present invention, there is provided a multi-zone flexible interconnection control method based on a zone intelligent convergence terminal, the method including:
establishing communication connection between the intelligent fusion terminal and the power distribution network master station management system and each transformer area interconnection device through a communication module facing to transformer area flexible interconnection application;
determining a platform area running state, and determining a platform area interconnection running mode according to the platform area running state;
and determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer area interconnection operation mode and the operation data of the transformer area, and issuing the flexible interconnection power scheduling instruction of the transformer area to each transformer area interconnection device for execution through a transformer area intelligent fusion terminal.
Preferably, the determining the operating state of the cell and determining the cell interconnection operating mode according to the operating state of the cell includes:
if the maximum value of the load rate difference between the station areas is larger than or equal to a preset load rate difference threshold value, determining that the operation state of the station areas is a load rate difference operation state, and directly determining that the interconnection operation mode of the station areas is an uniform load operation mode so as to supply the load of the heavy load station areas from the light load station areas;
and if the power-loss fault occurs in the transformer area, determining the transformer area operation state as the power-loss fault operation state, and directly determining the transformer area interconnection operation mode as the fault transfer operation mode so as to realize that the non-fault transformer area supplies power to the fault transformer area.
Preferably, the determining a flexible interconnection power scheduling instruction of the cell according to the interconnection operation mode of the cell and the operation data of the cell includes:
when the transformer area interconnection operation mode is the uniform load operation mode, according to the transformer capacity of each transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, aiming at minimizing the load difference of different transformer areas or matching the optimal operation point of the transformer of different transformer areas, determining a flexible interconnection power scheduling instruction of the transformer areas;
and when the transformer area interconnection operation mode is the fault transfer operation mode, determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of the non-fault transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, and aiming at meeting the important load power supply requirement of the fault transformer area.
Preferably, when the inter-platform area interconnection operation mode is the average-load operation mode, the determining of the inter-platform area flexible interconnection power scheduling instruction according to the transformer capacity of each platform area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the inter-platform area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, with the objective of minimizing the load difference of different platform areas or matching the optimal operation points of the transformers of different platform areas, includes:
Figure BDA0003089578540000031
s.t.Aeqx＝beq，
Aineqx≤bineq，
or
Figure BDA0003089578540000032
s.t.Aeqx＝beq，
Aineqx≤bineq，
Wherein, F1(x) And F2(x) Respectively representing target functions which aim at minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas; n is the number of interconnected platform areas; pout,jOutputting power for the transformer of the jth station area; sTF,jTransformer capacity for jth station zone; pout,b,jThe optimal operation point of the transformer in the jth transformer area is set; a. theeqA coefficient matrix of an active power balance equation set of the interconnected region; beqConstant column vector of active power balance equation for interconnected station area, AeqAnd beqThe system is used for describing the active power balance relationship of the source load storage equipment in each transformer area and the active power balance relationship of the transformer area interconnection area; a. theineqA coefficient matrix of an equation set is constrained for an interconnection station area active power inequality; bineqFor the constant column vector of the set of interconnected station area active power inequality constraint equations, AineqAnd bineqThe capacity constraint is used for describing the capacity constraint of the transformer, the interconnection device and the source load storage equipment of each transformer area; and x is a flexible interconnection power scheduling instruction of the transformer area.
Preferably, when the transformer area interconnection operation mode is the fail-to-supply operation mode, the determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of the non-failed transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, with the goal of meeting the important load power supply requirement of the failed transformer area, includes:
Figure BDA0003089578540000033
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
Figure BDA0003089578540000041
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
F5(x)＝max(-x(k))＝min(x(k))，
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
when the sum of the residual capacities of the transformers in the non-fault transformer area is greater than the power supply shortage of the fault transformer area, F is adopted3(x) Or F4(x) Obtaining a multi-station interconnection power scheduling instruction x; when the sum of the residual capacities of the transformers in the non-fault transformer area is less than the power supply shortage of the fault transformer area, F is adopted5(x) Obtaining a multi-station interconnection power scheduling instruction x; k is the number of the fault area; a'eqIs a coefficient matrix, b 'of an active power balance equation set of the mutual station area under the fault condition'eqIs a constant column vector, A 'of an interconnected region active power balance equation under fault conditions'eq、b'eqThe system is used for describing the active power balance relationship of the source load storage equipment in each region and the active power balance relationship of the region interconnection region under the fault condition; a'ineqCoefficient matrix, b 'of interconnected region active power inequality constraint equation set under fault condition'ineqConstant column vector, A 'of interconnected region active power inequality constraint equation set under fault condition'ineq、b′ineqThe method is used for describing the capacity constraint of the transformer, the interconnection device and the source load and storage equipment of each area under the fault condition.
According to another aspect of the present invention, there is provided a multi-zone flexible interconnection control system based on a zone intelligent convergence terminal, the system including:
the communication connection establishing unit is used for establishing communication connection between the intelligent fusion terminal and the power distribution network master station management system and each transformer area interconnection device through a communication module facing to transformer area flexible interconnection application;
the device comprises a platform area interconnection operation mode determining unit, a platform area interconnection operation mode determining unit and a platform area interconnection operation mode determining unit, wherein the platform area interconnection operation mode determining unit is used for determining a platform area operation state and determining a platform area interconnection operation mode according to the platform area operation state;
and the scheduling instruction determining unit is used for determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer area interconnection operation mode and the operation data of the transformer area, and issuing the flexible interconnection power scheduling instruction of the transformer area to each transformer area interconnection device for execution through a transformer area intelligent fusion terminal.
Preferably, the determining unit of the inter-platform area operation mode determines the operation state of the inter-platform area and determines the inter-platform area operation mode according to the operation state of the inter-platform area, and includes:
if the maximum value of the load rate difference between the station areas is larger than or equal to a preset load rate difference threshold value, determining that the operation state of the station areas is a load rate difference operation state, and directly determining that the interconnection operation mode of the station areas is an uniform load operation mode so as to supply the load of the heavy load station areas from the light load station areas;
and if the power-loss fault occurs in the transformer area, determining the transformer area operation state as the power-loss fault operation state, and directly determining the transformer area interconnection operation mode as the fault transfer operation mode so as to realize that the non-fault transformer area supplies power to the fault transformer area.
Preferably, the determining unit of the scheduling instruction determines the flexible interconnection power scheduling instruction of the cell according to the interconnection operation mode of the cell and the operation data of the cell, and includes:
the first calculating subunit is used for determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of each transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of an interconnection device of the transformer area, the active power of source load storage equipment and the capacity of the source load storage equipment when the interconnection operation mode of the transformer area is the uniform load operation mode, and aiming at minimizing the load difference of different transformer areas or matching the optimal operation points of the transformers of different transformer areas;
and the second calculating subunit is used for determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of a non-fault transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of an interconnection device of the transformer area, the active power of the source load storage equipment and the capacity of the source load storage equipment when the interconnection operation mode of the transformer area is a fault transfer operation mode, and aiming at meeting the important load power supply requirement of the fault transformer area.
Preferably, when the transformer area interconnection operation mode is the equal-load operation mode, the first calculating subunit determines the flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of each transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage device, and the capacity of the source load storage device, with the goal of minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas, including:
Figure BDA0003089578540000051
s.t.Aeqx＝beq，
Aineqx≤bineq，
or
Figure BDA0003089578540000061
s.t.Aeqx＝beq，
Aineqx≤bineq，
Wherein, F1(x) And F2(x) Respectively representing target functions which aim at minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas; n is the number of interconnected platform areas; pout,jOutputting power for the transformer of the jth station area; sTF,jTransformer capacity for jth station zone; pout,b,jThe optimal operation point of the transformer in the jth transformer area is set; a. theeqA coefficient matrix of an active power balance equation set of the interconnected region; beqConstant column vector of active power balance equation for interconnected station area, AeqAnd beqThe system is used for describing the active power balance relationship of the source load storage equipment in each transformer area and the active power balance relationship of the transformer area interconnection area; a. theineqA coefficient matrix of an equation set is constrained for an interconnection station area active power inequality; bineqFor the constant column vector of the set of interconnected station area active power inequality constraint equations, AineqAnd bineqThe capacity constraint is used for describing the capacity constraint of the transformer, the interconnection device and the source load storage equipment of each transformer area; and x is a flexible interconnection power scheduling instruction of the transformer area.
Preferably, when the transformer area interconnection operation mode is the fail-to-supply operation mode, the second calculating subunit determines the flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of the non-failed transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage device, and the capacity of the source load storage device, with the goal of meeting the important load power supply requirement of the failed transformer area as a target, including:
Figure BDA0003089578540000062
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
Figure BDA0003089578540000063
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
F5(x)＝max(-x(k))＝min(x(k))，
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
when the sum of the residual capacities of the transformers in the non-fault transformer area is greater than the power supply shortage of the fault transformer area, F is adopted3(x) Or F4(x) Obtaining a multi-station interconnection power scheduling instruction x; when the sum of the residual capacities of the transformers in the non-fault transformer area is less than the power supply shortage of the fault transformer area, F is adopted5(x) Obtaining a multi-station interconnection power scheduling instruction x; k is the number of the fault area; a'eqIs a coefficient matrix, b 'of an active power balance equation set of the mutual station area under the fault condition'eqIs a constant column vector, A 'of an interconnected region active power balance equation under fault conditions'eq、b'eqThe system is used for describing the active power balance relationship of the source load storage equipment in each region and the active power balance relationship of the region interconnection region under the fault condition; a'ineqCoefficient matrix, b 'of interconnected region active power inequality constraint equation set under fault condition'ineqFor power of interconnected station area under fault conditionConstant column vector, A 'of rate inequality constraint equation set'ineq、b′ineqThe method is used for describing the capacity constraint of the transformer, the interconnection device and the source load and storage equipment of each area under the fault condition.
The invention provides a multi-district flexible interconnection control method and system based on a district intelligent fusion terminal, which consider the existing power distribution network/district management architecture, establish the communication connection between the intelligent fusion terminal and a power distribution network master station management system and each district interconnection device through a communication module facing to the district flexible interconnection application, use the district intelligent fusion terminal as a pivot node, downlink interaction district interconnection devices and uplink interaction power distribution network master station management system, realize the management architecture of a cloud edge end, and improve the multi-district flexible interconnection operation management level; the method comprises the steps of determining a district interconnection operation mode according to a district operation state, determining a district flexible interconnection power scheduling instruction according to the district interconnection operation mode and operation data of the district, and issuing the district flexible interconnection power scheduling instruction to each district interconnection device to be executed through a district intelligent fusion terminal, so that a cloud edge end management mechanism of a power distribution network master station management system, the district intelligent fusion terminal and the district interconnection device is fused, and the management and control efficiency of flexible interconnection of multiple districts can be effectively improved.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
fig. 1 is a flowchart of a multi-zone flexible interconnection control method 100 based on a zone intelligent convergence terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of multi-zone flexible interconnection control based on zone intelligent convergence terminal management and control according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a multi-zone flexible interconnection control system 300 based on a zone intelligent convergence terminal according to an embodiment of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Fig. 1 is a flowchart of a multi-zone flexible interconnection control method 100 based on a zone intelligent convergence terminal according to an embodiment of the present invention. As shown in fig. 1, in the multi-block flexible interconnection control method and system based on the block intelligent fusion terminal provided by the embodiment of the present invention, in consideration of the existing power distribution network/block management architecture, the communication connection between the intelligent fusion terminal and the power distribution network master station management system and each block interconnection device is established through a communication module facing to block flexible interconnection application, and the block intelligent fusion terminal is used as a hub node, a downlink interaction block interconnection device and an uplink interaction power distribution network master station management system, so that the management architecture of a cloud edge end is realized, and the multi-block flexible interconnection operation management level is improved; the method comprises the steps of determining a district interconnection operation mode according to a district operation state, determining a district flexible interconnection power scheduling instruction according to the district interconnection operation mode and operation data of the district, and issuing the district flexible interconnection power scheduling instruction to each district interconnection device to be executed through a district intelligent fusion terminal, so that a cloud edge end management mechanism of a power distribution network master station management system, the district intelligent fusion terminal and the district interconnection device is fused, and the management and control efficiency of flexible interconnection of multiple districts can be effectively improved. In the multi-zone flexible interconnection control method 100 based on the intelligent convergence terminal in the embodiment of the invention, starting from step 101, in step 101, a communication connection between the intelligent convergence terminal and a power distribution network master station management system and each zone interconnection device is established through a communication module facing to the zone flexible interconnection application.
In the invention, on the basis of the architecture of the existing district intelligent fusion terminal, a communication module applied to district flexible interconnection is additionally arranged, so that reliable and rapid communication between the district intelligent fusion terminal and a distribution network master station management system and a district interconnection device is realized as a district flexible interconnection control hub, and bidirectional interaction is formed between the district intelligent fusion terminal and the distribution network master station management system and the district interconnection device; the communication module supports communication modes such as RS485, Ethernet, HPLC, wireless and the like.
In step 102, a zone operation state is determined, and a zone interconnection operation mode is determined according to the zone operation state.
Preferably, the determining the operating state of the cell and determining the cell interconnection operating mode according to the operating state of the cell includes:
if the maximum value of the load rate difference between the station areas is larger than or equal to a preset load rate difference threshold value, determining that the operation state of the station areas is a load rate difference operation state, and directly determining that the interconnection operation mode of the station areas is an uniform load operation mode so as to supply the load of the heavy load station areas from the light load station areas;
and if the power-loss fault occurs in the transformer area, determining the transformer area operation state as the power-loss fault operation state, and directly determining the transformer area interconnection operation mode as the fault transfer operation mode so as to realize that the non-fault transformer area supplies power to the fault transformer area.
In the invention, the power distribution network master station management system decides the inter-platform area interconnection operation mode according to the platform area operation state. Specifically, when the load difference among the platform areas is large, determining that the platform area interconnection operation mode is an equal load operation mode, and supplying part of the load of the heavy-load platform area from the light-load platform area; when the power-loss fault occurs in the transformer area, the operation mode is determined to be a fault switching mode, and power is supplied to the fault transformer area from the non-fault transformer area.
In addition, the distribution network master station management system can also issue the decided transformer area interconnection operation mode to a transformer area intelligent fusion terminal, and the transformer area intelligent fusion terminal receives a transformer area interconnection operation mode instruction and issues the transformer area interconnection operation mode instruction to a transformer area interconnection device for execution, so that updating of the multi-transformer area interconnection operation mode is realized.
In step 103, a flexible interconnection power scheduling instruction of the distribution area is determined according to the interconnection operation mode of the distribution area and the operation data of the distribution area, and the flexible interconnection power scheduling instruction of the distribution area is issued to each distribution area interconnection device through the intelligent integration terminal of the distribution area for execution.
Preferably, the determining a flexible interconnection power scheduling instruction of the cell according to the interconnection operation mode of the cell and the operation data of the cell includes:
when the transformer area interconnection operation mode is the uniform load operation mode, according to the transformer capacity of each transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, aiming at minimizing the load difference of different transformer areas or matching the optimal operation point of the transformer of different transformer areas, determining a flexible interconnection power scheduling instruction of the transformer areas;
and when the transformer area interconnection operation mode is the fault transfer operation mode, determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of the non-fault transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, and aiming at meeting the important load power supply requirement of the fault transformer area.
Preferably, when the inter-platform area interconnection operation mode is the average-load operation mode, the determining of the inter-platform area flexible interconnection power scheduling instruction according to the transformer capacity of each platform area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the inter-platform area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, with the objective of minimizing the load difference of different platform areas or matching the optimal operation points of the transformers of different platform areas, includes:
Figure BDA0003089578540000101
s.t.Aeqx＝beq，
Aineqx≤bineq，
or
Figure BDA0003089578540000102
s.t.Aeqx＝beq，
Aineqx≤bineq，
Wherein, F1(x) And F2(x) Respectively representing target functions which aim at minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas; n is the number of interconnected platform areas; pout,jOutputting power for the transformer of the jth station area; sTF,jTransformer capacity for jth station zone; pout,b,jThe optimal operation point of the transformer in the jth transformer area is set; a. theeqA coefficient matrix of an active power balance equation set of the interconnected region; beqConstant column vector of active power balance equation for interconnected station area, AeqAnd beqThe system is used for describing the active power balance relationship of the source load storage equipment in each transformer area and the active power balance relationship of the transformer area interconnection area; a. theineqA coefficient matrix of an equation set is constrained for an interconnection station area active power inequality; bineqFor the constant column vector of the set of interconnected station area active power inequality constraint equations, AineqAnd bineqThe capacity constraint is used for describing the capacity constraint of the transformer, the interconnection device and the source load storage equipment of each transformer area; and x is a flexible interconnection power scheduling instruction of the transformer area.
Preferably, when the transformer area interconnection operation mode is the fail-to-supply operation mode, determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of the non-failed transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, with the goal of meeting the important load power supply requirement of the failed transformer area as a target, the method includes:
Figure BDA0003089578540000111
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
Figure BDA0003089578540000112
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
F5(x)＝max(-x(k))＝min(x(k))，
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
when the sum of the residual capacities of the transformers in the non-fault transformer area is greater than the power supply shortage of the fault transformer area, F is adopted3(x) Or F4(x) Obtaining a multi-station interconnection power scheduling instruction x; when the sum of the residual capacities of the transformers in the non-fault transformer area is less than the power supply shortage of the fault transformer area, F is adopted5(x) Obtaining a multi-station interconnection power scheduling instruction x; k is the number of the fault area; a'eqIs a coefficient matrix, b 'of an active power balance equation set of the mutual station area under the fault condition'eqIs a constant column vector, A 'of an interconnected region active power balance equation under fault conditions'eq、b'eqThe system is used for describing the active power balance relationship of the source load storage equipment in each region and the active power balance relationship of the region interconnection region under the fault condition; a'ineqCoefficient matrix, b 'of interconnected region active power inequality constraint equation set under fault condition'ineqConstant column vector, A 'of interconnected region active power inequality constraint equation set under fault condition'ineq、b′ineqThe method is used for describing the capacity constraint of the transformer, the interconnection device and the source load and storage equipment of each area under the fault condition.
In the invention, under the determined transformer area interconnection operation mode, the power distribution network master station management system determines a transformer area flexible interconnection power scheduling instruction according to the determined transformer area interconnection operation mode and the operation data of the transformer area, and transmits the transformer area flexible interconnection power scheduling instruction to each transformer area interconnection device through a transformer area intelligent fusion terminal for execution. When the inter-platform area interconnection operation mode is the uniform load operation mode, the heavy-load platform area load can be supplied by the light-load platform area through the scheduling instruction, and when the inter-platform area interconnection operation mode is the power-off fault operation mode, the power supply from the fault platform area to the fault platform area can be realized through the scheduling instruction. The power distribution network master station management system issues the determined power scheduling command to the district intelligent fusion terminal, and the district intelligent fusion terminal receives the power scheduling command and issues the power scheduling command to the district interconnection device for execution, so that multi-district interconnection power management is achieved.
Specifically, when the inter-platform zone operation mode is the average load operation mode, determining a flexible inter-platform zone power scheduling instruction by using the following formula, including:
Figure BDA0003089578540000121
s.t.Aeqx＝beq，
Aineqx≤bineq，
or
Figure BDA0003089578540000122
s.t.Aeqx＝beq，
Aineqx≤bineq，
Wherein, F1(x) And F2(x) Respectively representing target functions which aim at minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas; n is the number of interconnected platform areas; pout,jOutputting power for the transformer of the jth station area; sTF,jTransformer capacity for jth station zone; pout,b,jThe optimal operation point of the transformer in the jth transformer area is set; a. theeqA coefficient matrix of an active power balance equation set of the interconnected region; beqConstant column vector of active power balance equation for interconnected station area, AeqAnd beqFor describing the active power level of the source load storage equipment in each areaA balance relation and a platform area interconnection area active power balance relation; a. theineqA coefficient matrix of an equation set is constrained for an interconnection station area active power inequality; bineqFor the constant column vector of the set of interconnected station area active power inequality constraint equations, AineqAnd bineqThe capacity constraint is used for describing the capacity constraint of the transformer, the interconnection device and the source load storage equipment of each transformer area; and x is a flexible interconnection power scheduling instruction of the transformer area.
Specifically, when the inter-platform zone operation mode is the fail-to-provision operation mode, determining the inter-platform zone flexible interconnect power scheduling instruction by using the following formula includes:
Figure BDA0003089578540000131
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
Figure BDA0003089578540000132
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
F5(x)＝max(-x(k))＝min(x(k))，
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
when the sum of the residual capacities of the transformers in the non-fault transformer area is greater than the power supply shortage of the fault transformer area, F is adopted3(x) Or F4(x) Obtaining a multi-station interconnection power scheduling instruction x; when the sum of the residual capacities of the transformers in the non-fault transformer area is less than the power supply shortage of the fault transformer area, F is adopted5(x) Obtaining a multi-station interconnection power scheduling instruction x; k is the number of the fault area; a'eqIs a coefficient matrix, b 'of an active power balance equation set of the mutual station area under the fault condition'eqFor interconnecting the active power levels of the cells in the event of a faultConstant column vector of balance equation, A'eq、b'eqThe system is used for describing the active power balance relationship of the source load storage equipment in each region and the active power balance relationship of the region interconnection region under the fault condition; a'ineqCoefficient matrix, b 'of interconnected region active power inequality constraint equation set under fault condition'ineqConstant column vector, A 'of interconnected region active power inequality constraint equation set under fault condition'ineq、b′ineqThe method is used for describing the capacity constraint of the transformer, the interconnection device and the source load and storage equipment of each area under the fault condition.
Fig. 2 is a schematic diagram of multi-zone flexible interconnection control based on zone intelligent convergence terminal management and control according to an embodiment of the present invention. As shown in fig. 2, in the present invention, a flexible interconnection management and control hub of a distribution area refers to an intelligent integration terminal of the distribution area, and realizes bidirectional interaction with a distribution network master station management system through a communication module applied to flexible interconnection of the distribution area, on one hand, device information of source storage devices in an interconnection area of the distribution area and operation state information of interconnection devices of the distribution area are uploaded to the distribution network master station management system, and on the other hand, a distribution network interconnection operation mode and a power regulation and control instruction issued by the distribution network master station system are received; the bidirectional interaction with the transformer area interconnection device is realized, on one hand, the source load storage information and the transformer area interconnection device running state information in the transformer area interconnection area are obtained, and on the other hand, the transformer area interconnection running mode and the power regulation and control instruction of the power distribution network master station management system are issued.
The power distribution network master station management system can select a distribution area interconnection operation mode according to the distribution area operation state and sends the distribution area interconnection operation mode to the distribution area intelligent fusion terminal, and the distribution area intelligent fusion terminal receives an operation mode instruction and sends the operation mode instruction to the distribution area interconnection device to execute, so that updating of the multi-distribution area interconnection operation mode is achieved. Under the selected operation mode, the power distribution network master station management system formulates a distribution area flexible interconnection power scheduling instruction according to the information of the plurality of areas and sends the distribution area flexible interconnection power scheduling instruction to the distribution area intelligent fusion terminal, and the distribution area intelligent fusion terminal receives the power scheduling instruction and sends the power scheduling instruction to the distribution area interconnection device for execution, so that the multi-distribution area interconnection power management is realized.
The multi-region flexible interconnection control method based on the station region intelligent fusion terminal management and control has the advantages that:
1) and flexible interconnection operation of a plurality of regions is realized and incorporated into a power distribution network master station management system. The management framework of cloud edge ends is realized by combining the operation requirements of multiple regions, taking the intelligent platform region fusion terminal as a hub node, a downlink interaction platform region interconnection device and an uplink interaction power distribution network main station management system, and the flexible interconnection operation management level of the multiple regions is improved.
2) The flexible interconnection operation monitoring, state perception and intelligent regulation and control level of the plurality of areas are improved. And realizing the multi-cell-area interconnection operation mode and power regulation and control decision through cell-area operation requirements and cell-area interconnection real-time information.
3) And the edge control capability of the intelligent integrated terminal of the platform area is improved. The flexible interconnection deployment of the transformer area based on the intelligent fusion terminal of the transformer area realizes the local management of the interconnection area of the transformer area, including acquisition, analysis, decision and the like, and promotes the intelligent, digital and informatization development of the transformer area.
Fig. 3 is a schematic structural diagram of a multi-zone flexible interconnection control system 300 based on a zone intelligent convergence terminal according to an embodiment of the present invention. As shown in fig. 3, a multi-zone flexible interconnection control system 300 based on a zone intelligent convergence terminal according to an embodiment of the present invention includes: a communication connection establishing unit 301, a zone interconnection operation mode determining unit 302, and a scheduling instruction determining unit 303.
Preferably, the communication connection establishing unit 301 is configured to establish a communication connection between the intelligent convergence terminal and the power distribution network master station management system and each of the district interconnection devices through a communication module facing the district flexible interconnection application.
Preferably, the cell interconnection operation mode determining unit 302 is configured to determine a cell operation state, and determine a cell interconnection operation mode according to the cell operation state.
Preferably, the determining unit 302 of the inter-platform zone operating mode determines the operating state of the inter-platform zone, and determines the inter-platform zone operating mode according to the operating state of the inter-platform zone, including:
if the maximum value of the load rate difference between the station areas is larger than or equal to a preset load rate difference threshold value, determining that the operation state of the station areas is a load rate difference operation state, and directly determining that the interconnection operation mode of the station areas is an uniform load operation mode so as to supply the load of the heavy load station areas from the light load station areas;
and if the power-loss fault occurs in the transformer area, determining the transformer area operation state as the power-loss fault operation state, and directly determining the transformer area interconnection operation mode as the fault transfer operation mode so as to realize that the non-fault transformer area supplies power to the fault transformer area.
Preferably, the scheduling instruction determining unit 303 is configured to determine a flexible interconnection power scheduling instruction of the transformer area according to the transformer area interconnection operation mode and the operation data of the transformer area, and issue the flexible interconnection power scheduling instruction of the transformer area to each transformer area interconnection device through the transformer area intelligent convergence terminal for execution.
Preferably, the determining unit 303 of the scheduling instruction determines a flexible interconnection power scheduling instruction of the cell according to the interconnection operation mode of the cell and the operation data of the cell, and includes:
the first calculating subunit is used for determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of each transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of an interconnection device of the transformer area, the active power of source load storage equipment and the capacity of the source load storage equipment when the interconnection operation mode of the transformer area is the uniform load operation mode, and aiming at minimizing the load difference of different transformer areas or matching the optimal operation points of the transformers of different transformer areas;
and the second calculating subunit is used for determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of a non-fault transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of an interconnection device of the transformer area, the active power of the source load storage equipment and the capacity of the source load storage equipment when the interconnection operation mode of the transformer area is a fault transfer operation mode, and aiming at meeting the important load power supply requirement of the fault transformer area.
Preferably, when the transformer area interconnection operation mode is the equal-load operation mode, the first calculating subunit determines the flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of each transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage device, and the capacity of the source load storage device, with the goal of minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas, including:
Figure BDA0003089578540000161
s.t.Aeqx＝beq，
Aineqx≤bineq，
or
Figure BDA0003089578540000162
s.t.Aeqx＝beq，
Aineqx≤bineq，
Wherein, F1(x) And F2(x) Respectively representing target functions which aim at minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas; n is the number of interconnected platform areas; pout,jOutputting power for the transformer of the jth station area; sTF,jTransformer capacity for jth station zone; pout,b,jThe optimal operation point of the transformer in the jth transformer area is set; a. theeqA coefficient matrix of an active power balance equation set of the interconnected region; beqConstant column vector of active power balance equation for interconnected station area, AeqAnd beqThe system is used for describing the active power balance relationship of the source load storage equipment in each transformer area and the active power balance relationship of the transformer area interconnection area; a. theineqA coefficient matrix of an equation set is constrained for an interconnection station area active power inequality; bineqFor the constant column vector of the set of interconnected station area active power inequality constraint equations, AineqAnd bineqThe capacity constraint is used for describing the capacity constraint of the transformer, the interconnection device and the source load storage equipment of each transformer area; and x is a flexible interconnection power scheduling instruction of the transformer area.
Preferably, when the transformer area interconnection operation mode is the fail-to-supply operation mode, the second calculating subunit determines the flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of the non-failed transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage device, and the capacity of the source load storage device, with the goal of meeting the important load power supply requirement of the failed transformer area as a target, including:
Figure BDA0003089578540000163
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
Figure BDA0003089578540000171
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
F5(x)＝max(-x(k))＝min(x(k))，
s.t.A'eqx＝b'eq，
A′ineqx≤b′ineq，
when the sum of the residual capacities of the transformers in the non-fault transformer area is greater than the power supply shortage of the fault transformer area, F is adopted3(x) Or F4(x) Obtaining a multi-station interconnection power scheduling instruction x; when the sum of the residual capacities of the transformers in the non-fault transformer area is less than the power supply shortage of the fault transformer area, F is adopted5(x) Obtaining a multi-station interconnection power scheduling instruction x; k is the number of the fault area; a'eqIs a coefficient matrix, b 'of an active power balance equation set of the mutual station area under the fault condition'eqIs a constant column vector, A 'of an interconnected region active power balance equation under fault conditions'eq、b'eqThe system is used for describing the active power balance relationship of the source load storage equipment in each region and the active power balance relationship of the region interconnection region under the fault condition; a'ineqCoefficient matrix, b 'of interconnected region active power inequality constraint equation set under fault condition'ineqConstant column vector, A 'of interconnected region active power inequality constraint equation set under fault condition'ineq、b′ineqThe method is used for describing the capacity constraint of the transformer, the interconnection device and the source load and storage equipment of each area under the fault condition.
The multi-zone flexible interconnection control system 300 based on the intelligent convergence terminal of the zone area corresponds to the multi-zone flexible interconnection control method 100 based on the intelligent convergence terminal of the zone area, and is not described herein again.
The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (10)

1. A multi-region flexible interconnection control method based on a region intelligent fusion terminal is characterized by comprising the following steps:
establishing communication connection between the intelligent fusion terminal and the power distribution network master station management system and each transformer area interconnection device through a communication module facing to transformer area flexible interconnection application;
determining a platform area running state, and determining a platform area interconnection running mode according to the platform area running state;
and determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer area interconnection operation mode and the operation data of the transformer area, and issuing the flexible interconnection power scheduling instruction of the transformer area to each transformer area interconnection device for execution through a transformer area intelligent fusion terminal.
2. The method of claim 1, wherein determining the operating status of the cell and determining the inter-cell operating mode according to the operating status of the cell comprises:
if the maximum value of the load rate difference between the station areas is larger than or equal to a preset load rate difference threshold value, determining that the operation state of the station areas is a load rate difference operation state, and directly determining that the interconnection operation mode of the station areas is an uniform load operation mode so as to supply the load of the heavy load station areas from the light load station areas;
and if the power-loss fault occurs in the transformer area, determining the transformer area operation state as the power-loss fault operation state, and directly determining the transformer area interconnection operation mode as the fault transfer operation mode so as to realize that the non-fault transformer area supplies power to the fault transformer area.
3. The method of claim 1, wherein determining a zone flexible interconnect power scheduling command according to the zone interconnect operation mode and the zone operation data comprises:
when the transformer area interconnection operation mode is the uniform load operation mode, according to the transformer capacity of each transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, aiming at minimizing the load difference of different transformer areas or matching the optimal operation point of the transformer of different transformer areas, determining a flexible interconnection power scheduling instruction of the transformer areas;
and when the transformer area interconnection operation mode is the fault transfer operation mode, determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of the non-fault transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of the transformer area interconnection device, the active power of the source load storage equipment and the capacity of the source load storage equipment, and aiming at meeting the important load power supply requirement of the fault transformer area.
4. The method of claim 1, wherein when the inter-platform interconnection operation mode is an equal-load operation mode, determining a flexible inter-platform interconnection power scheduling command according to transformer capacity, optimal transformer operation point, transformer output power, inter-platform interconnection device capacity, active power of source load storage equipment and capacity of source load storage equipment of each platform, aiming at minimizing different platform load difference or matching optimal transformer operation points of different platforms, comprises:
Figure FDA0003089578530000021
s.t.Aeqx＝beq，
Aineqx≤bineq，
or
Figure FDA0003089578530000022
s.t.Aeqx＝beq，
Aineqx≤bineq，
Wherein, F1(x) And F2(x) Respectively representing target functions which aim at minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas; n is the number of interconnected platform areas; pout,jOutputting power for the transformer of the jth station area; sTF,jTransformer capacity for jth station zone; pout,b,jThe optimal operation point of the transformer in the jth transformer area is set; a. theeqFor active power level of interconnected station areaA coefficient matrix of the equation set is balanced; beqConstant column vector of active power balance equation for interconnected station area, AeqAnd beqThe system is used for describing the active power balance relationship of the source load storage equipment in each transformer area and the active power balance relationship of the transformer area interconnection area; a. theineqA coefficient matrix of an equation set is constrained for an interconnection station area active power inequality; bineqFor the constant column vector of the set of interconnected station area active power inequality constraint equations, AineqAnd bineqThe capacity constraint is used for describing the capacity constraint of the transformer, the interconnection device and the source load storage equipment of each transformer area; and x is a flexible interconnection power scheduling instruction of the transformer area.
5. The method according to claim 1, wherein when the transformer area interconnection operation mode is a fail-to-supply operation mode, determining a flexible interconnection power scheduling instruction of a transformer area according to transformer capacity of a non-failure transformer area, an optimal operation point of a transformer, output power of the transformer, interconnection device capacity of the transformer area, active power of source load storage equipment and capacity of the source load storage equipment, with a goal of meeting important load power supply requirements of a failure transformer area, comprises:
Figure FDA0003089578530000031
s.t.A′eqx＝b′eq，
A′ineqx≤b′ineq，
Figure FDA0003089578530000032
s.t.A′eqx＝b′eq，
A′ineqx≤b′ineq，
F5(x)＝max(-x(k))＝min(x(k))，
s.t.A′eqx＝b′eq，
A′ineqx≤b′ineq，
when the sum of the residual capacities of the transformers in the non-fault transformer area is greater than the power supply shortage of the fault transformer area, F is adopted3(x) Or F4(x) Obtaining a multi-station interconnection power scheduling instruction x; when the sum of the residual capacities of the transformers in the non-fault transformer area is less than the power supply shortage of the fault transformer area, F is adopted5(x) Obtaining a multi-station interconnection power scheduling instruction x; k is the number of the fault area; a'eqIs a coefficient matrix, b 'of an active power balance equation set of the mutual station area under the fault condition'eqIs a constant column vector, A 'of an interconnected region active power balance equation under fault conditions'eq、b′eqThe system is used for describing the active power balance relationship of the source load storage equipment in each region and the active power balance relationship of the region interconnection region under the fault condition; a'ineqCoefficient matrix, b 'of interconnected region active power inequality constraint equation set under fault condition'ineqConstant column vector, A 'of interconnected region active power inequality constraint equation set under fault condition'ineq、b′ineqThe method is used for describing the capacity constraint of the transformer, the interconnection device and the source load and storage equipment of each area under the fault condition.
6. The utility model provides a flexible interconnected control system in many districts based on platform district intelligent fusion terminal which characterized in that, the system includes:
the communication connection establishing unit is used for establishing communication connection between the intelligent fusion terminal and the power distribution network master station management system and each transformer area interconnection device through a communication module facing to transformer area flexible interconnection application;
the device comprises a platform area interconnection operation mode determining unit, a platform area interconnection operation mode determining unit and a platform area interconnection operation mode determining unit, wherein the platform area interconnection operation mode determining unit is used for determining a platform area operation state and determining a platform area interconnection operation mode according to the platform area operation state;
and the scheduling instruction determining unit is used for determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer area interconnection operation mode and the operation data of the transformer area, and issuing the flexible interconnection power scheduling instruction of the transformer area to each transformer area interconnection device for execution through a transformer area intelligent fusion terminal.
7. The system according to claim 6, wherein the cell interconnection operation mode determining unit that determines the cell operation state and determines the cell interconnection operation mode according to the cell operation state includes:
if the maximum value of the load rate difference between the station areas is larger than or equal to a preset load rate difference threshold value, determining that the operation state of the station areas is a load rate difference operation state, and directly determining that the interconnection operation mode of the station areas is an uniform load operation mode so as to supply the load of the heavy load station areas from the light load station areas;
and if the power-loss fault occurs in the transformer area, determining the transformer area operation state as the power-loss fault operation state, and directly determining the transformer area interconnection operation mode as the fault transfer operation mode so as to realize that the non-fault transformer area supplies power to the fault transformer area.
8. The system according to claim 6, wherein the scheduling instruction determining unit determines a flexible interconnection power scheduling instruction for a cell according to the interconnection operation mode of the cell and the operation data of the cell, and comprises:
the first calculating subunit is used for determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of each transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of an interconnection device of the transformer area, the active power of source load storage equipment and the capacity of the source load storage equipment when the interconnection operation mode of the transformer area is the uniform load operation mode, and aiming at minimizing the load difference of different transformer areas or matching the optimal operation points of the transformers of different transformer areas;
and the second calculating subunit is used for determining a flexible interconnection power scheduling instruction of the transformer area according to the transformer capacity of a non-fault transformer area, the optimal operation point of the transformer, the output power of the transformer, the capacity of an interconnection device of the transformer area, the active power of the source load storage equipment and the capacity of the source load storage equipment when the interconnection operation mode of the transformer area is a fault transfer operation mode, and aiming at meeting the important load power supply requirement of the fault transformer area.
9. The system of claim 6, wherein when the inter-platform interconnection operation mode is an equal-load operation mode, the first computing subunit determines the inter-platform flexible interconnection power scheduling instruction according to transformer capacity of each platform, optimal operation point of the transformer, output power of the transformer, inter-platform interconnection device capacity, active power of the source load storage device, and capacity of the source load storage device, aiming at minimizing different inter-platform load differences or matching optimal operation points of transformers of different platforms, and includes:
Figure FDA0003089578530000051
s.t.Aeqx＝beq，
Aineqx≤bineq，
or
Figure FDA0003089578530000052
s.t.Aeqx＝beq，
Aineqx≤bineq，
Wherein, F1(x) And F2(x) Respectively representing target functions which aim at minimizing load difference of different transformer areas or matching optimal operation points of transformers of different transformer areas; n is the number of interconnected platform areas; pout,jOutputting power for the transformer of the jth station area; sTF,jTransformer capacity for jth station zone; pout,b,jThe optimal operation point of the transformer in the jth transformer area is set; a. theeqA coefficient matrix of an active power balance equation set of the interconnected region; beqConstant column vector of active power balance equation for interconnected station area, AeqAnd beqThe system is used for describing the active power balance relationship of the source load storage equipment in each transformer area and the active power balance relationship of the transformer area interconnection area; a. theineqA coefficient matrix of an equation set is constrained for an interconnection station area active power inequality; bineqFor the constant column vector of the set of interconnected station area active power inequality constraint equations, AineqAnd bineqThe capacity constraint is used for describing the capacity constraint of the transformer, the interconnection device and the source load storage equipment of each transformer area; and x is a flexible interconnection power scheduling instruction of the transformer area.
10. The system according to claim 6, wherein when the inter-platform district interconnection operation mode is the fail-to-supply operation mode, the second computing subunit determines the inter-platform district flexible interconnection power scheduling instruction according to the transformer capacity of the non-failed platform district, the optimal operation point of the transformer, the output power of the transformer, the capacity of the inter-platform district interconnection apparatus, the active power of the source load storage device, and the capacity of the source load storage device, with the goal of meeting the important load power supply requirement of the failed platform district, and includes:
Figure FDA0003089578530000053
s.t.A′eqx＝b′eq，
A′ineqx≤b′ineq，
Figure FDA0003089578530000061
s.t.A′eqx＝b′eq，
A′ineqx≤b′ineq，
F5(x)＝max(-x(k))＝min(x(k))，
s.t.A′eqx＝b′eq，
A′ineqx≤b′ineq，
when the sum of the residual capacities of the transformers in the non-fault transformer area is greater than the power supply shortage of the fault transformer area, F is adopted3(x) Or F4(x) Obtaining a multi-station interconnection power scheduling instruction x; when the sum of the residual capacities of the transformers in the non-fault transformer area is less than the power supply shortage of the fault transformer area, F is adopted5(x) Obtaining a multi-station interconnection power scheduling instruction x; k is the number of the fault area; a'eqFor fault conditionsCoefficient matrix b 'of active power balance equation set of mutual channel region'eqIs a constant column vector, A 'of an interconnected region active power balance equation under fault conditions'eq、b′eqThe system is used for describing the active power balance relationship of the source load storage equipment in each region and the active power balance relationship of the region interconnection region under the fault condition; a'ineqCoefficient matrix, b 'of interconnected region active power inequality constraint equation set under fault condition'ineqConstant column vector, A 'of interconnected region active power inequality constraint equation set under fault condition'ineq、b′ineqThe method is used for describing the capacity constraint of the transformer, the interconnection device and the source load and storage equipment of each area under the fault condition.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113794285A (en) * 2021-10-22 2021-12-14 成都汉度科技有限公司 Intelligent flexible regulation and control method for agricultural motor-pumped well cluster
CN114204675A (en) * 2021-11-15 2022-03-18 国网辽宁省电力有限公司葫芦岛供电公司 Power distribution station electric energy data acquisition terminal based on cloud edge cooperation
CN114336614A (en) * 2022-01-04 2022-04-12 国网上海能源互联网研究院有限公司 Energy management and control method and system for low-voltage transformer area flexible-direct interconnection system
CN114513009A (en) * 2022-04-21 2022-05-17 石家庄科林物联网科技有限公司 Flexible-straight control method, device and system based on low-voltage distribution area
CN115800412A (en) * 2022-12-07 2023-03-14 中国电力科学研究院有限公司 Transformer area alternating current-direct current flexible interaction device, system and method
CN116264403A (en) * 2022-12-28 2023-06-16 国网浙江省电力有限公司桐乡市供电公司 Comprehensive treatment method for low-voltage distribution network accessed by large-scale distributed photovoltaic
CN117691754A (en) * 2024-02-02 2024-03-12 中国电力科学研究院有限公司 Intelligent automatic control method and system for side end of optical storage and charge resource of platform zone layer and electronic equipment

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113794285A (en) * 2021-10-22 2021-12-14 成都汉度科技有限公司 Intelligent flexible regulation and control method for agricultural motor-pumped well cluster
CN114204675A (en) * 2021-11-15 2022-03-18 国网辽宁省电力有限公司葫芦岛供电公司 Power distribution station electric energy data acquisition terminal based on cloud edge cooperation
CN114336614A (en) * 2022-01-04 2022-04-12 国网上海能源互联网研究院有限公司 Energy management and control method and system for low-voltage transformer area flexible-direct interconnection system
CN114336614B (en) * 2022-01-04 2023-03-28 国网上海能源互联网研究院有限公司 Energy management and control method and system for low-voltage transformer area flexible-direct interconnection system
CN114513009A (en) * 2022-04-21 2022-05-17 石家庄科林物联网科技有限公司 Flexible-straight control method, device and system based on low-voltage distribution area
CN115800412A (en) * 2022-12-07 2023-03-14 中国电力科学研究院有限公司 Transformer area alternating current-direct current flexible interaction device, system and method
CN115800412B (en) * 2022-12-07 2024-03-19 中国电力科学研究院有限公司 Alternating current/direct current flexible interaction device, system and method for transformer area
CN116264403A (en) * 2022-12-28 2023-06-16 国网浙江省电力有限公司桐乡市供电公司 Comprehensive treatment method for low-voltage distribution network accessed by large-scale distributed photovoltaic
CN116264403B (en) * 2022-12-28 2024-03-26 国网浙江省电力有限公司桐乡市供电公司 Comprehensive treatment method for low-voltage distribution network accessed by large-scale distributed photovoltaic
CN117691754A (en) * 2024-02-02 2024-03-12 中国电力科学研究院有限公司 Intelligent automatic control method and system for side end of optical storage and charge resource of platform zone layer and electronic equipment

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