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Grid adjustment method, device and terminal equipment for limiting grid short-circuit current

A technology of short-circuit current and adjustment method, applied in circuit devices, AC network circuits, electrical components, etc., can solve the problems of short-circuit current and safety and stability

Active Publication Date: 2021-03-16
INST OF ECONOMIC & TECH STATE GRID HEBEI ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a network frame adjustment method, device and terminal equipment for limiting the short-circuit current of the power grid, so as to solve the problem that the short-circuit current and safety and stability of the system cannot be balanced in the prior art

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  • Grid adjustment method, device and terminal equipment for limiting grid short-circuit current
  • Grid adjustment method, device and terminal equipment for limiting grid short-circuit current
  • Grid adjustment method, device and terminal equipment for limiting grid short-circuit current

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Embodiment 1

[0028] figure 1 A flowchart of the implementation of the grid frame adjustment method for limiting the short-circuit current of the grid provided by an embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows:

[0029] like figure 1 As shown, a grid adjustment method for limiting the short-circuit current of a grid provided by an embodiment of the present invention includes:

[0030] S101: Calculate the network power data of the initial network in the normal operation mode, where the network power data includes the network power flow calculation result and the short-circuit current.

[0031] In this embodiment, the initial network includes a plurality of disconnectable lines. When all lines of the initial network are in normal operation, the steady-state power flow data of the transmission network, original data such as generators, busbars, and ...

Embodiment 2

[0087] like Figure 4 As shown, an embodiment of the present invention provides a grid adjustment device 100 for limiting the short-circuit current of a grid, for performing figure 1 The method steps in the corresponding embodiment include:

[0088] The network power data calculation module 110 is used to calculate the network power data of the initial network in the normal operation mode, the network power data including the network power flow calculation result and the short-circuit current;

[0089] The grid adjustment scheme analysis model establishment module 120 is configured to obtain, according to the short-circuit current, a grid adjustment scheme that meets the requirements for limiting the short-circuit current of the network as a feasible grid adjustment scheme for the initial network, and calculate the result according to the network power flow And the feasible grid frame adjustment scheme, establish the grid frame adjustment scheme analysis model;

[0090] The ...

Embodiment 3

[0119] Figure 5 It is a schematic diagram of a terminal device provided by an embodiment of the present invention. like Figure 5 As shown, the terminal device 5 in this embodiment includes: a processor 50 , a memory 51 , and a computer program 52 stored in the memory 51 and executable on the processor 50 . When the processor 50 executes the computer program 52, the steps in the above-mentioned embodiments of the grid frame adjustment method for limiting the short-circuit current of the grid are realized, for example, figure 1 Steps 101 to 104 are shown. Alternatively, when the processor 50 executes the computer program 52, the functions of the modules / units in the foregoing device embodiments are implemented, for example, Figure 4 The functions of the modules 110 to 140 are shown.

[0120] The computer program 52 may be divided into one or more modules / units, which are stored in the memory 51 and executed by the processor 50 to accomplish the present invention. The one...

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Abstract

The present invention is applicable to the technical field of electric power system, and provides a network frame adjustment method, device and terminal equipment for limiting the short-circuit current of the power grid. The method includes: calculating the network power data of the initial network in normal operation mode; , to obtain a feasible grid adjustment scheme that meets the requirements of limiting short-circuit current, and according to the network power flow calculation results and the feasible grid adjustment scheme, establish an analysis model for the grid adjustment scheme; then consider the role of the power flow controller installed in the key lines of the initial network , establish the joint optimization model of the power flow controller and the grid adjustment scheme; calculate the optimal solution of the power flow control quantity, and adjust the grid structure of the initial network according to the optimal solution of the power flow control quantity. The grid adjustment scheme selected by the present invention satisfies the requirements of short-circuit current, considers the power flow control function of the power flow controller, improves the static safety of the grid adjustment scheme, and realizes both short-circuit current and static safety of the network.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a grid frame adjustment method, device and terminal equipment for limiting short-circuit current of a power grid. Background technique [0002] With the rapid development of the national economy, the power load and load density continue to increase. The growth of the load requires continuous investment in power supply projects. The capacity of single machines, power plants and substations continues to increase, resulting in the continuous increase of short-circuit current levels in power grids at all levels. It has become one of the main problems faced by the operation of modern power systems. Especially in recent years, the difficulty of planning and coordinating the development of online power sources has become more and more serious, and the problem of short-circuit current has become more and more prominent, and traditional short-circuit current control meas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06H02J3/00
CPCH02J3/06H02J3/00H02J2203/20
Inventor 张章周宁王颖邵华王涛袁博申永鹏张倩茅习朋张丽洁刘芮齐晓光荆志朋吴浩
Owner INST OF ECONOMIC & TECH STATE GRID HEBEI ELECTRIC POWER
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