CN112907051B - Intelligent maintenance plan generation method based on allocation cooperation - Google Patents

Intelligent maintenance plan generation method based on allocation cooperation Download PDF

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CN112907051B
CN112907051B CN202110158340.7A CN202110158340A CN112907051B CN 112907051 B CN112907051 B CN 112907051B CN 202110158340 A CN202110158340 A CN 202110158340A CN 112907051 B CN112907051 B CN 112907051B
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CN112907051A (en
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杨小磊
路轶
冯秋侠
闪鑫
肖艳辉
徐希
高虹霞
王毅
王云丽
陈刚
胡佳佳
张国芳
张大伟
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Ziyang Power Supply Company State Grid Sichuan Electric Power Co ltd
State Grid Sichuan Electric Power Co Ltd
NARI Nanjing Control System Co Ltd
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Ziyang Power Supply Company State Grid Sichuan Electric Power Co ltd
State Grid Sichuan Electric Power Co Ltd
NARI Nanjing Control System Co Ltd
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Abstract

The invention discloses an intelligent maintenance plan generation method based on allocation cooperation, which comprises the steps of allocating cooperative topological analysis according to maintenance equipment analyzed from a maintenance request sheet, allocating cooperative power supply point correction, allocating cooperative maintenance mode arrangement according to the operation condition of a power grid, verifying whether power grid flow constraint is met, adjusting load transfer operation when the power grid flow constraint is not met, and forming a final maintenance plan. The intelligent maintenance plan generation method based on allocation cooperation guarantees safe operation of power grid scheduling, achieves intelligent flow of maintenance business, and improves work efficiency.

Description

Intelligent maintenance plan generation method based on allocation cooperation
Technical Field
The invention relates to an intelligent maintenance plan generation method based on allocation cooperation, and belongs to the technical field of electric power system dispatching automation.
Background
The equipment maintenance is a common business of an electric power system, the traditional maintenance plan arrangement is that a lower-level unit provides maintenance application according to the equipment operation condition, scheduling operation mode personnel combine the analysis result of the safety and stability of the power grid to conduct unified compilation, the final verification is issued and executed, the scheduling operation mode personnel rely on manual experience and simple calculation when the maintenance plan is compiled, and for a complex power grid structure, especially under the condition that the scheduling cooperation is tighter, an effective and intuitive mode is lacked to conduct reasonable maintenance plan arrangement.
The decommissioning of the equipment as a whole is not isolated and is mutually influenced. The outage of the main network equipment may cause the change of the local operation mode of the distribution network, some equipment may be out of service along with the outage, and the power flow change of the main network is caused by the overhaul of the distribution network equipment. Due to the management mechanism of the layered and partitioned power grid, the construction of a main distribution network dispatching operation subsystem, the hierarchical implementation and management of maintenance services and the mutual important influence of equipment maintenance are caused, the judgment is needed according to experience, the risk of error judgment exists, and the serious potential safety hazard is brought to the power grid. Even if the mutual influence is judged, the work of each work area needs to be respectively issued manually, so that the workload of scheduling and mode personnel is caused. Therefore, how to rapidly and accurately plan the maintenance of the power grid is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides an intelligent maintenance plan generation method based on allocation cooperation, and aims to solve the problem that potential safety hazards are brought to a power grid due to the fact that a main distribution network scheduling operation subsystem is constructed and an maintenance plan mode is mainly and independently arranged.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an intelligent maintenance plan generation method based on allocation cooperation comprises the following steps:
step 1: based on a through power grid dispatching operation management system, a power grid dispatching automation system and a distribution network automation master station system, a master network overhaul request form and a distribution network overhaul request form are obtained from the power grid dispatching operation management system, master network overhaul equipment information in the master network overhaul request form is matched with equipment in the power grid dispatching automation system, distribution network overhaul equipment information in the distribution network overhaul request form is matched with equipment in the distribution network automation master station system, and corresponding overhaul equipment is obtained.
Step 2: through mutual directional connection of distribution network feeder equipment in the distribution network automation main station system and load equipment in the power grid dispatching automation system, the electrical connection relation of the boundary of the main distribution network is established, and a complete distribution system network topology integrated model is formed.
And step 3: performing full-network topology state analysis based on a network topology integration model of a dispatching system, performing main network topology analysis by a power grid dispatching automation system, finding out an electric island in the main network, wherein a power supply point in the electric island is a generator, all equipment in the electric island is marked as a live-line operation state, and simultaneously, load nodes of main distribution network boundary equipment in the electric island are marked as a live-line operation state; the distribution network automatic master station system performs distribution network topology analysis, the starting point of a feeder line, namely a main network load node, is used as a power supply point, the electrified state of the distribution network power supply point is marked through the load node state marked by the main network, and the running states of other equipment of the distribution network are marked.
And 4, step 4: according to the running states of all devices in the main network, performing load transfer analysis on a power failure area, affected by outage of the repair devices, in the main network as a transfer area, performing load transfer on device layering partitions in the transfer area, sorting the devices to be transferred according to plant voltage levels, sorting voltage-loss buses in the plant to be transferred according to the voltage levels, preferentially recovering buses with high voltage levels, reanalyzing the transfer area after recovery, outputting a main network transfer scheme if all the main networks are transferred, performing main network tide check on the main network transfer scheme, if the main networks pass the check, reserving the main network transfer scheme, and if the main networks do not pass the check, adjusting the main network transfer scheme; if the main network is not completely supplied, adjusting the recovery scheme until the main network is completely supplied, outputting a main network transfer supply scheme, and performing main network flow check on the main network transfer supply scheme until the adjusted recovery scheme meets the main network flow check;
if the unrecovered bus to be switched to or the load which cannot be supplied by the main network still exists after all the recovery schemes are adjusted, forming capacity to be switched to by the unrecovered load, correcting power supply points on the distribution network side according to the running state of each device of the distribution network after the main network switching scheme is arranged, performing distribution network side load switching analysis on the bus to be switched to and the capacity to be switched to, determining a selected switching-off ring switch, outputting the distribution network switching scheme, performing distribution network power flow check on the distribution network transmission and supply scheme, correcting main network power flow change by the load change amount after the switching-off ring operation, performing main network power flow check, and if the distribution network power flow check and the main network power flow check both pass, reserving the distribution network switching-off scheme; and if one of the distribution network power flow check and the main network power flow check does not pass, reselecting the on-off loop switch until the distribution network power flow check and the main network power flow check pass, and outputting a distribution network switching scheme.
And 5: aiming at the power failure area affected by the outage of the maintenance equipment, the load is transferred to the power grid operation mode through the main network transfer scheme and the distribution network transfer scheme, then the maintenance equipment is isolated from the large power grid to form the power failure operation, and the maintenance mode arrangement is formed according to the transfer operation and the power failure operation.
Step 6: and safety verification is arranged aiming at the maintenance mode, whether power grid flow constraint is met or not is verified, and load transfer operation is adjusted when the requirement is not met until the power grid flow constraint requirement is met, so that a final maintenance plan is formed.
And as a preferred scheme, the main network overhaul request sheet is pushed to the power grid dispatching automation system in a webservice mode.
As an optimal scheme, the distribution network overhaul request sheet is pushed to a distribution network automatic master station system in a webservice mode.
Preferably, the step 4 comprises the following steps:
a) the maintenance equipment is obtained from the main network maintenance request form, and the power failure range is analyzed according to the operation state of the main network equipment;
b) carrying out load transfer on the power failure range hierarchical subareas caused by overhaul outage, namely sequencing according to the voltage grades of the plant stations, sequencing the power-losing buses of the plant stations to be recovered according to the voltage grades, and preferentially recovering the buses with high voltage grades;
c) Searching a standby power supply point and a power supply transfer scheme according to the main network topology, analyzing, circularly recovering a bus, judging whether power-losing equipment exists or not, namely whether all power supply is transferred or not, transferring all power supply to the step a or transferring all power supply to the step d;
d) and e, carrying out main network tide check on the main network power supply switching scheme, enabling the bus to meet voltage constraint, enabling the line to meet current constraint, enabling the main transformer to meet active constraint, and switching to the step e. C, turning to the step c if the power grid flow constraint is not met;
e) and C, after multiple cycles, the 10kV bus which cannot be recovered still exists or the 10kV bus is recovered to cause the main transformer equipment to be out of limit, the out-of-limit capacity is calculated, namely the capacity to be supplied is transferred, and the step A is transferred to the distribution network side for analysis. And if all the power-loss buses are recovered on the main network side, turning to f.
f) The main network transfer scheme is finished to form a main network transfer scheme;
A) according to the 10kV bus to be converted and the capacity to be converted, which are analyzed in the step e, correcting a power supply point at the distribution network side according to the main network load and the directional relation of the distribution network feeder line and the electrified state of the equipment arranged in the main network mode;
B) starting load transfer analysis of the distribution network side, and determining a closing and opening ring switch;
C) starting power flow check at the network distribution side, transferring to the step D when power flow constraint is met, transferring to the step B when check fails, and reselecting a transfer scheme to determine a loop closing and opening switch;
D) Acquiring load variation of each feeder line according to the loop closing and opening operation, correcting main network power flow variation according to the distribution network feeder line and main network load directivity relationship, checking main network side power flow, returning to the step F after checking, returning to the step B after checking, and reselecting a loop closing and opening switch;
F) and finishing the distribution network supply switching mode to form a distribution network supply switching scheme.
As a preferred scheme, the load transferred from the distribution network side is searched for a connected distribution network side line through a bus to be transferred, and the on-off ring switch is obtained according to a breadth and depth priority search combination method.
Preferably, the grid power flow constraint includes: the bus meets voltage constraint, the line meets active power and current constraint, and the main transformer meets active power constraint.
Preferably, the bus satisfies the voltage constraint formula as follows:
V ix <V i <V is
wherein: v i Voltage, V, representing main and distribution network bus i ix 、V is And the voltage represents the upper limit value and the lower limit value of the i voltage of the main and distribution network buses.
As a preferred scheme, the line satisfies the active and current constraint formulas as follows:
Figure BDA0002934142020000041
wherein: p i Representing active power of main and distribution network lines i, P ix 、P is Representing the upper limit value and the lower limit value of active power of a main network line I and a distribution network line I i Representing the current I of the main and distribution network lines I ix 、I is Representing the upper current limit of the main and distribution network lines iA value and a lower limit value.
As a preferred scheme, the main transformer meets an active power constraint formula as follows:
P ix ′<P i ′<P is
wherein: p' i Representing the active power of the main network transformer i, P ix ′、P is ' represents the upper and lower active power limits of the main network transformer i.
Has the advantages that: the invention provides an intelligent maintenance plan generation method based on allocation cooperation, which realizes information sharing and service flow intercommunication by penetrating through a power grid dispatching Operation Management System (OMS), a power grid dispatching automation system and a distribution network automation system. By obtaining an maintenance request form of an OMS (operation management system), establishing model directional connection based on a main network and distribution network boundary device, realizing linkage analysis of the main network and the distribution network according to a service calling mode, forming main network and distribution network coordination mode arrangement, and realizing automatic checking of maintenance plan safety rationality based on allocation coordination tide constraint, topology constraint and power supply point constraint, the safe operation of power grid scheduling is guaranteed, the intelligent flow of maintenance service is realized, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1, an intelligent maintenance plan generation method based on deployment coordination, which runs through a scheduling operation management system, a power grid scheduling automation system and a distribution network automation master station system, achieves maintenance plan deployment coordination arrangement based on deployment coordination topology analysis by analyzing maintenance equipment or power failure equipment in a maintenance application form in the scheduling operation management system, and performs safety check on a check maintenance plan through load flow check of main and distribution network boundary correction to generate a scientific and rigorous maintenance plan, and comprises the following specific steps:
(1) based on a through power grid dispatching Operation Management System (OMS), a power grid dispatching automation system and a distribution network automation master station system, a main network overhaul request form and a distribution network overhaul request form are obtained from the OMS, main network overhaul equipment information in the main network overhaul request form is matched with equipment in the power grid dispatching automation system, distribution network overhaul equipment information in the distribution network overhaul request form is matched with equipment in the distribution network automation master station system, and corresponding overhaul equipment is obtained. The consistency of the equipment in each system is realized through the intercommunication of information sharing and service flow.
(2) Through mutual directional connection of distribution network feeder equipment in the distribution network automation main station system and load equipment in the power grid dispatching automation system, the electrical connection relation of the boundaries of the main distribution network is established, and a complete distribution system network topology integrated model is formed.
(3) And analyzing the whole network topology state based on a network topology integrated model of a dispatching system, analyzing the main network topology by a power grid dispatching automation system, finding out an electric island in the main network, wherein a power supply point in the electric island is a generator, all equipment in the electric island is marked as a live-line running state, and meanwhile, a load node of main and distribution network boundary equipment in the electric island is also marked as a live-line state. The distribution network automatic master station system performs distribution network topology analysis, the starting point of a feeder line, namely a main network load node, is used as a power supply point, the distribution network power supply point electrified state is marked through the load node state marked by the main network, the running states of other equipment of the distribution network are marked, the connection uniformity of the running states of the main network and the distribution network is realized, and the consistency of network topology states such as electrification, power failure and the like of the whole network equipment is ensured.
(4) When corresponding maintenance equipment is maintained, loads influenced by the maintenance equipment are analyzed based on the electrical network topology state and the load shedding operation is carried out, the analysis principle is that a main network is firstly distributed and then distributed, and the switching operation is that the main network is firstly distributed and then distributed.
According to the running states of all devices in the main network, a power failure area affected by equipment outage in the main network is used as a transfer area for load transfer analysis, the devices in the transfer area are subjected to load transfer in a layered subarea mode, the devices to be transferred are sorted according to the voltage level of a station, voltage-losing buses in the station to be transferred are sorted according to the voltage level, buses with high voltage levels are preferentially restored, the area to be transferred is analyzed again after restoration, if all the main networks are transferred, a main network transfer scheme is output, main network power flow check is carried out on the main network transfer scheme, if check is passed, the main network transfer scheme is reserved, and if not, the main network transfer scheme is adjusted. And if the main network is not completely transferred, adjusting the recovery scheme until the main network is completely transferred, outputting the main network transfer scheme, and performing main network flow check on the main network transfer scheme until the adjusted recovery scheme meets the main network flow check.
If the unrecovered bus to be converted or the load which cannot be supplied by the main network still exists after all the recovery schemes are adjusted, the unrecovered load forms capacity to be converted, the power supply point at the distribution network side is corrected according to the running state of each device of the distribution network after the arrangement of the main network transmission and supply scheme, the distribution network side load transmission and supply analysis is carried out on the bus to be converted and the capacity to be converted, the selected ring closing and opening switch is determined, the distribution network transmission and supply scheme is output, the distribution network power flow check is carried out on the distribution network transmission and supply scheme, meanwhile, the main network power flow change is corrected according to the load change after the ring closing and opening operation and the main network power flow check is carried out, and if the distribution network power flow check and the main network power flow check both pass, the distribution network transmission and supply scheme is reserved; and if one of the distribution network power flow check and the main network power flow check does not pass, reselecting the on-off loop switch until the distribution network power flow check and the main network power flow check pass, and outputting a distribution network transmission scheme.
And searching for interconnected distribution network side lines by the bus to be transferred according to the load quantity to be transferred from the distribution network side, and acquiring the on-off loop switch according to a breadth and depth priority search combination method.
(5) Aiming at the power failure area affected by the outage of the maintenance equipment, the load is transferred to the power grid operation mode through the main network transmission scheme and the distribution network transmission scheme, then the maintenance equipment is isolated from the large power grid to form the power failure operation, and the maintenance mode arrangement is formed according to the transfer operation and the power failure operation.
(6) And (4) aiming at the maintenance mode, the power grid safety check is arranged, whether the power grid flow constraint is met or not is verified, and the load transfer operation is adjusted when the requirement is not met until the power grid flow constraint requirement is met, so that a final maintenance plan is formed.
Main and distribution network bus: v ix <V i <V is (1)
Main and distribution network lines:
Figure BDA0002934142020000061
main network transformer: p ix ′<P i ′<P is ′ (3)
Where i represents any device in the main distribution network, subscript x represents a "lower limit," and s represents an "upper limit. The running mode of the power grid has the following requirements on the safety of the power grid during equipment maintenance, and the bus meets the voltage constraint V ix <V i <V is The circuit satisfies the active power and current constraints
Figure BDA0002934142020000062
The main transformer meets active power constraint P ix ′<P i ′<P is ′。
The method is implemented by adopting a dispatching cooperative load flow calculation method, utilizing the existing main network load flow calculation module and the distribution network load flow calculation module to respectively realize the power grid load flow cooperative calculation by dispatching the cooperative application service call to carry out boundary correction. And arranging constraint verification of dispatching the collaborative power flow according to the generated maintenance mode.
Example (b):
1) based on a through power grid dispatching Operation Management System (OMS), a power grid dispatching automation system and a distribution network automation system, corresponding functional modules are designed according to maintenance service requirements, and information sharing and service flow intercommunication are achieved.
2) An automatic trigger module is designed in the OMS system, the submitted main network overhaul request form is automatically pushed to a power grid dispatching automation system in a webservice mode when being submitted, the submitted distribution network overhaul request form is pushed to a distribution network automation master station system in the webservice mode, main network overhaul equipment in the overhaul request form is matched with equipment in the dispatching automation system, and distribution network equipment in the overhaul request form is matched with distribution network equipment in the distribution network automation master station system to obtain corresponding overhaul equipment.
3) According to the maintenance equipment analyzed from the maintenance request form, allocation cooperative maintenance mode arrangement and safety check are carried out according to the power grid operation condition, cooperative topology analysis needs to be allocated, the allocation cooperative power supply point correction and the allocation cooperative power flow check need to be carried out, the main network model and the main network analysis result are obtained from the main network system in a remote retrieval mode, and the distribution network model and the distribution network analysis result are obtained from the distribution network system in a remote retrieval mode.
(3-1) firstly, establishing a network topology integration model of a deployment system: through mutual directional connection of distribution network feeder equipment in the distribution network automation main station system and load equipment in the power grid dispatching automation system, the electrical connection relation of the boundaries of the main distribution network is established, and a complete distribution system network topology is formed.
And (3-2) the dispatching automation system carries out topology analysis on the main network, finds out an electric island in the main network, if a power supply point in the electric island is a generator, all devices in the electric island are marked as an electrified running state, and load nodes comprising the boundary devices of the main network and the distribution network are also marked as an electrified running state. The distribution network automation system carries out distribution network topology analysis, the starting point of a feeder line, namely a main network load node, is used as a power supply point, the electrified state of the distribution network power supply point is marked through the load state marked by the main network, the running states of other devices of the distribution network are marked, and the unification of the running states of the main distribution network is realized.
(3-2) the main and distribution network overhaul request form overhaul equipment is transferred to an analysis process:
a) the maintenance equipment is obtained from the main network maintenance request form, and the power failure range is analyzed according to the operation state of the main network equipment;
b) carrying out load transfer on the power failure range hierarchical subareas caused by overhaul outage, namely sequencing according to the voltage grades of the plant stations, sequencing the power-losing buses of the plant stations to be recovered according to the voltage grades, and preferentially recovering the buses with high voltage grades;
c) Searching a standby power supply point and a power supply transfer scheme according to the main network topology, analyzing, circularly recovering a bus, judging whether power-losing equipment exists or not, namely whether all power supply is transferred or not, transferring all power supply to the step a or transferring all power supply to the step d;
d) and e, carrying out main network tide check on the main network power supply switching scheme, enabling the bus to meet voltage constraint, enabling the line to meet current constraint, enabling the main transformer to meet active constraint, and switching to the step e. C, transferring to the step c when the power grid flow constraint is not met;
e) and C, after multiple cycles, the 10kV bus which cannot be recovered still exists or the 10kV bus is recovered to cause the main transformer equipment to be out of limit, the out-of-limit capacity is calculated, namely the capacity to be supplied is transferred, and the step A is transferred to the distribution network side for analysis. And if all the power-loss buses are recovered on the main network side, turning to f.
f) The main network transfer scheme is finished to form a main network transfer scheme;
A) according to the 10kV bus to be converted and the capacity to be converted, which are analyzed in the step e, correcting a power supply point at the distribution network side according to the main network load and the directional relation of the distribution network feeder line and the electrified state of the equipment arranged in the main network mode;
B) starting load transfer analysis of the distribution network side, and determining a closing and opening ring switch;
C) starting power flow check at the network distribution side, transferring to the step D when power flow constraint is met, transferring to the step B when check fails, and reselecting a transfer scheme to determine a loop closing and opening switch;
D) Acquiring load variation of each feeder line according to the loop closing and opening operation, correcting main network power flow variation according to the distribution network feeder line and main network load directivity relationship, checking main network side power flow, returning to the step F after checking, returning to the step B after checking, and reselecting a loop closing and opening switch;
F) and finishing the distribution network transfer mode to form a distribution network transfer scheme.
4) The main network and distribution network overhaul equipment power failure operation analysis:
4-1) recovering a load transfer operation switch according to a main distribution network transfer scheme and a distribution network transfer scheme to form transfer operation, and forming power failure operation aiming at a power failure operation switch of maintenance equipment;
4-2) forming maintenance mode arrangement according to the supply transfer operation and the power failure operation.
5) And (4) aiming at the maintenance mode, the power grid safety check is arranged, whether the power grid flow constraint is met or not is verified, and the load transfer operation is adjusted when the requirement is not met until the power grid flow constraint requirement is met, so that a final maintenance plan is formed.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (7)

1. An intelligent maintenance plan generation method based on allocation cooperation is characterized in that: the method comprises the following steps:
step 1: according to the running states of all devices in the main network, performing load transfer analysis on a power failure area, affected by outage of the repair devices, in the main network as a transfer area, performing load transfer on device layering partitions in the transfer area, sorting the devices to be transferred according to plant voltage levels, sorting voltage-loss buses in the plant to be transferred according to the voltage levels, preferentially recovering buses with high voltage levels, reanalyzing the area to be transferred after recovery, outputting a main network transfer scheme if all the main networks are transferred, performing main network tide check on the main network transfer scheme, if the main networks pass the check, reserving the main network transfer scheme, and if the main networks do not pass the check, adjusting the main network transfer scheme; if the main network is not completely transferred, adjusting the recovery scheme until the main network is completely transferred, outputting the main network transfer supply scheme, and performing main network flow check on the main network transfer supply scheme until the adjusted recovery scheme meets the main network flow check;
if the unrecovered bus to be switched or the load which cannot be supplied by the main network still exists after all the recovery schemes are adjusted, forming capacity to be switched by the unrecovered load, correcting power supply points at the distribution network side according to the operation states of all the equipment of the distribution network after the main network switching scheme is arranged, performing distribution network side load switching analysis on the bus to be switched and the capacity to be switched, determining a selected switching-off ring switch, outputting the distribution network switching scheme, performing distribution network power flow check on the distribution network switching-off scheme, correcting main network power flow change by the load change amount after the switching-off ring operation, performing main network power flow check, and if the distribution network power flow check and the main network power flow check both pass, reserving the distribution network switching-off scheme; if one of the distribution network power flow check and the main network power flow check does not pass, the on-off loop switch is reselected until the distribution network power flow check and the main network power flow check pass, and a distribution network switching scheme is output;
And 2, step: aiming at a power failure area affected by the outage of maintenance equipment, carrying out load transfer operation on a power grid operation mode through a main network transfer scheme and a distribution network transfer scheme, isolating the maintenance equipment from a large power grid to form power failure operation, and forming maintenance mode arrangement according to the transfer operation and the power failure operation;
and 3, step 3: safety check is arranged aiming at the maintenance mode, whether power grid flow constraint is met or not is verified, and load transfer operation is adjusted when the requirement is not met until the power grid flow constraint requirement is met, so that a final maintenance plan is formed;
the method comprises the following steps of:
performing full-network topology state analysis based on a network topology integration model of a dispatching system, performing main network topology analysis by a power grid dispatching automation system, finding out an electric island in the main network, wherein a power supply point in the electric island is a generator, all equipment in the electric island is marked as a live-line operation state, and simultaneously, load nodes of main distribution network boundary equipment in the electric island are marked as a live-line operation state; the distribution network automatic master station system performs distribution network topology analysis, the starting point of a feeder line, namely a main network load node, is used as a power supply point, the electrified state of the distribution network power supply point is marked through the load node state marked by the main network, and the running states of other equipment of the distribution network are marked;
The maintenance equipment obtaining step is as follows:
based on a through power grid dispatching operation management system, a power grid dispatching automation system and a distribution network automation master station system, a master network overhaul request form and a distribution network overhaul request form are obtained from the power grid dispatching operation management system, master network overhaul equipment information in the master network overhaul request form is matched with equipment in the power grid dispatching automation system, distribution network overhaul equipment information in the distribution network overhaul request form is matched with equipment in the distribution network automation master station system, and corresponding overhaul equipment is obtained.
2. The intelligent maintenance plan generation method based on deployment coordination according to claim 1, wherein: the method for acquiring the network topology integrated model of the allocation system comprises the following steps:
through mutual directional connection of distribution network feeder equipment in the distribution network automation main station system and load equipment in the power grid dispatching automation system, the electrical connection relation of the boundary of the main distribution network is established, and a complete distribution system network topology integrated model is formed.
3. The intelligent maintenance plan generation method based on deployment coordination according to claim 1, wherein: the step 1 comprises the following specific steps:
a) The maintenance equipment is obtained from the main network maintenance request form, and the power failure range is analyzed according to the running state of the main network equipment;
b) carrying out load transfer on the power failure range hierarchical subareas caused by overhaul outage, namely sequencing according to the voltage grades of the plant stations, sequencing the power-losing buses of the plant stations to be recovered according to the voltage grades, and preferentially recovering the buses with high voltage grades;
c) searching a standby power supply point and a power supply transfer scheme according to the main network topology, analyzing, circularly recovering a bus, judging whether power-losing equipment exists or not, namely whether all power supply is transferred or not, transferring all power supply to the step a or transferring all power supply to the step d;
d) e, performing main network power flow check on the main network power supply switching scheme, enabling the bus to meet voltage constraint, enabling the line to meet current constraint, enabling the main transformer to meet active constraint, and switching to the step e; c, turning to the step c if the power grid flow constraint is not met;
e) after multiple cycles, 10kV buses which cannot be recovered still exist or 10kV buses are recovered to cause the main transformer equipment to be out of limit, calculating out-of-limit capacity, namely capacity to be supplied and converted, and converting to the step A to analyze on the distribution network side; if all the power-off buses are recovered at the main network side, turning to f;
f) the main network transfer scheme is finished to form a main network transfer scheme;
A) According to the 10kV bus to be converted and the capacity to be converted, which are analyzed in the step e, correcting a power supply point at the distribution network side according to the main network load and the directional relation of the distribution network feeder line and the electrified state of the equipment arranged in the main network mode;
B) starting load transfer analysis of the distribution network side, and determining a closing and opening ring switch;
C) starting power flow check at the network distribution side, transferring to the step D when power flow constraint is met, transferring to the step B when check fails, and reselecting a transfer scheme to determine a loop closing and opening switch;
D) acquiring load variation of each feeder line according to the loop closing and opening operation, correcting main network power flow variation according to the distribution network feeder line and main network load directivity relationship, checking main network side power flow, returning to the step F after checking, returning to the step B after checking, and reselecting a loop closing and opening switch;
F) and finishing the distribution network supply switching mode to form a distribution network supply switching scheme.
4. The intelligent maintenance plan generation method based on deployment coordination according to claim 1, wherein: and transferring load from the distribution network side, searching for a distribution network side line which is communicated through a bus to be transferred, and acquiring a switching-on/off loop switch according to a breadth and depth priority search combination method.
5. The intelligent maintenance plan generation method based on deployment coordination according to claim 1, wherein: the main network maintenance request sheet is pushed to the power grid dispatching automation system in a webservice mode; and the distribution network maintenance request sheet is pushed to the distribution network automatic master station system in a webservice mode.
6. The intelligent maintenance plan generation method based on deployment coordination according to claim 1, wherein: the power flow constraint of the power grid comprises the following steps: the bus meets voltage constraint, the line meets active power and current constraint, and the main transformer meets active power constraint.
7. The intelligent maintenance plan generation method based on deployment coordination according to claim 6, wherein: the bus satisfies the voltage constraint formula as follows:
V ix <V i <V is
wherein: v i Voltage, V, representing main and distribution network bus i ix 、V is Representing the upper limit value and the lower limit value of the i voltage of the main network bus and the distribution network bus;
the circuit satisfies the active power and current constraint formula as follows:
Figure FDA0003632057960000031
wherein: p i Representing active power of main and distribution network lines i, P ix 、P is Representing the upper limit value and the lower limit value of active power of a main network line I and a distribution network line I i Representing the current I of the main and distribution network lines I ix 、I is Representing the upper limit value and the lower limit value of the current of the main network line i and the distribution network line i;
the main transformer satisfies the active power constraint formula as follows:
P ix ′<P i ′<P is
wherein: p i ' represents the active power of the main network transformer i, P ix ′、P is ' represents the upper and lower active power limits of the main network transformer i.
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