Grid frame adjusting method and device for limiting short-circuit current of power grid and terminal equipment

A short-circuit current and adjustment method technology, which is applied in the direction of circuit devices, AC network circuits, electrical components, etc., can solve the problems of inability to balance short-circuit current and safety and stability, achieve short-circuit current and static safety, and improve static safety Effect

Active Publication Date: 2019-08-13
INST OF ECONOMIC & TECH STATE GRID HEBEI ELECTRIC POWER +1
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  • 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 frame adjusting method and device for limiting short-circuit current of power grid and terminal equipment
  • Grid frame adjusting method and device for limiting short-circuit current of power grid and terminal equipment
  • Grid frame adjusting method and device for limiting short-circuit current of power grid and terminal equipment

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Embodiment 1

[0028] figure 1 It shows the implementation flow chart of the network frame adjustment method for limiting the short-circuit current of the power grid provided by an embodiment of the present invention. 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] Such as figure 1 As shown, a grid adjustment method for limiting the grid short-circuit current provided by an embodiment of the present invention includes:

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

[0031] In this embodiment, the initial network includes multiple lines that can be disconnected. When all lines in the initial network are in normal operation, the steady-state power flow data of the transmission network, original data such as generators, buses, and lines a...

Embodiment 2

[0087] Such as Figure 4 As shown, an embodiment of the present invention provides a network frame adjustment device 100 for limiting the short-circuit current of the power grid, which is used to perform figure 1 The method step in the corresponding embodiment, it comprises:

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

[0089] The grid adjustment scheme analysis model building module 120 is used to obtain the grid adjustment scheme that meets the requirements of limiting the short-circuit current of the network as the feasible grid adjustment scheme of the initial network according to the short-circuit current, and calculate the result according to the network power flow and the feasible network frame adjustment scheme, and establish a network frame adjustment program an...

Embodiment 3

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

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

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Abstract

The invention is applicable to the technical field of power systems, and provides a grid adjusting method and device for limiting a power grid short-circuit current and terminal equipment, and the method comprises the steps: calculating network power data of an initial network in a normal operation mode; according to the network power data, obtaining a feasible grid adjustment scheme meeting the requirement for limiting the short-circuit current, and according to a network power flow calculation result and the feasible grid adjustment scheme, establishing a grid adjustment scheme analysis model; considering the effect of a power flow controller installed in a key line of the initial network, and establishing a joint optimization model of the power flow controller and a net rack adjustmentscheme; and calculating a power flow control quantity optimal solution, and carrying out net rack adjustment on the initial network according to the power flow control quantity optimal solution. According to the selected net rack adjusting scheme, on the basis of meeting the short-circuit current requirement, the power flow control effect of the power flow controller is considered, the static safety of the net rack adjusting scheme is improved, and therefore the short-circuit current and the static safety of the network are both considered.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a grid 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 increase in load requires continuous investment in power supply projects. The capacity of single machines, power plants, and substations continues to increase, resulting in an increase in short-circuit current levels in power grids at all levels. It has become one of the main problems faced by modern power system operation. Especially in recent years, the difficulty of planning and coordinating the development of online power sources has increased greatly, and the problem of short-circuit current has become more prominent, and traditional short-circuit current control measures have been difficult to deal with. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(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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