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A method and system for allocating emergency repair tasks based on distribution network multiple faults

A distribution method and distribution network technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as difficult to formulate emergency repair strategies, and achieve the effect of reducing solution complexity and network loss

Active Publication Date: 2021-06-04
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to analyze the factors that affect the emergency repair strategy and emergency repair efficiency, such as load type, fault geographical distance, load level, daily load demand, and power-off load restoration amount, etc., before the emergency repair. Formulate a reasonable emergency repair strategy

Method used

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  • A method and system for allocating emergency repair tasks based on distribution network multiple faults
  • A method and system for allocating emergency repair tasks based on distribution network multiple faults
  • A method and system for allocating emergency repair tasks based on distribution network multiple faults

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Embodiment 1

[0051] When there are multiple faults in the distribution network, the fault needs to be repaired in time. When a fault is repaired, the branch where the fault is located needs to be closed to restore the downstream load power supply. When all loads are restored to power but there are still faults that have not been repaired, After each fault is repaired, adjust the operating structure of the grid frame to reduce the network loss of the grid operation.

[0052] refer to figure 1 , Figure 3 to Figure 10 , which is the first embodiment of the present invention, this embodiment provides a method for allocating emergency repair tasks based on distribution network multiple faults, including:

[0053] S1: Construct a node load demand model based on the node load characteristics of the distribution network. It should be noted that the load demand model includes:

[0054]

[0055] Among them, l: load type, 1: commercial, 2: residential, 3: industrial; P N (k): the rated load p...

Embodiment 2

[0129] Furthermore, refer to figure 2 , the present embodiment also provides an allocation algorithm for implementing multi-fault emergency repair tasks in a distribution network, including:

[0130] Input basic data (distribution network structure, fault, load, DG, emergency repair team, parameters), and determine the objective function and constraints of each stage;

[0131] Divide the island and update the island range and distribution network structure in real time;

[0132] Calculate and sort the repair value of all faults, and assign emergency repair tasks in combination with task assignment rules;

[0133] After the fault is repaired, switch on and supply power, and update the distribution network structure;

[0134] Calculate the repair value of all remaining faults, and assign repair tasks according to the repair progress and task assignment rules;

[0135] Judging whether all loads are connected to the large power grid, if not, recalculate the repair value of all...

Embodiment 3

[0141] refer to Figure 11 , is the third embodiment of the present invention. This embodiment is different from the above-mentioned embodiments in that it provides a distribution system based on multi-fault emergency repair tasks of distribution network, including:

[0142] The information collection module 100 is used to collect distribution network node load characteristics and various functional data information; information collection is the collection and processing of information, which can extract a large amount of required data information in the shortest time to classify and unify, improve The timeliness of information and the reduction of workload include the principles of reliability, integrity, real-time, accuracy, ease of use, planning and predictability.

[0143] The data processing center module 200 is used to receive, calculate, store, and output data information to be processed, which includes a computing unit 201, a database 202, and an input and output mana...

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Abstract

The invention discloses a distribution method and system based on multi-fault emergency repair tasks of a distribution network, constructing a node load demand model based on the node load characteristics of a distribution network; using dynamic relationships to establish a multi-fault emergency repair of a distribution network based on DG and time-varying loads With the recovery optimization model, the fault repair process is divided into the early stage of fault repair and the post fault repair; the calculation of the early stage of fault repair and the late stage of fault repair is calculated to obtain the restoration time and repair time of each fault respectively; combined with the restoration time and load demand model to construct the repair The value model is used to obtain the early repair task allocation plan for emergency repair; the network loss value of the distribution network is calculated according to the grid structure and load demand model, and the network loss value model is constructed by using the network loss value and emergency repair time to obtain the emergency repair task allocation plan for the later stage of emergency repair. The fault emergency repair order of distribution network established based on two value models in the present invention does not need to be solved by an iterative algorithm, so no NP problem will be formed, and the solution complexity is reduced.

Description

technical field [0001] The invention relates to the technical field of distribution network fault emergency repair and power supply recovery strategy and distribution network reconstruction, and in particular to a distribution method and system based on multiple fault emergency repair tasks of distribution network. Background technique [0002] As the leading industry of the national economic system, the power system has an increasing demand for power, and the distribution network, as an important link in the power network, undertakes the role of delivering electric energy to users such as industry, commerce and households, which directly affects the demand for users. The quality of power supply and power outages not only cause huge economic losses to all walks of life in society, but also bring inconvenience to people's lives, cause social disorder, and even cause serious consequences such as national defense security and social unrest. According to statistics, more than 80...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/001H02J2203/20
Inventor 于艾清丁丽青
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER