Constant power interface-based hybrid dynamic simulation method

A hybrid dynamic simulation and constant power technology, applied in the field of power systems, can solve problems such as obstacles to the practical use of hybrid dynamic simulation methods, increasing the difficulty of analysis components and devices, etc.

Active Publication Date: 2015-10-07
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

It increases the difficulty of analyzing the behavior characteristics of components and devices, which hinders the practical application of hybrid dynamic simulation methods

Method used

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  • Constant power interface-based hybrid dynamic simulation method
  • Constant power interface-based hybrid dynamic simulation method
  • Constant power interface-based hybrid dynamic simulation method

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0045] Such as figure 1 , the present invention provides a kind of hybrid dynamic simulation method based on constant power interface, and described method comprises the following steps:

[0046] Step 1: Divide the power system into multiple subsystems;

[0047] Step 2: Obtain the sequence of time series with equal time intervals;

[0048] Step 3: Add a constant power interface at the boundary bus and obtain the initial power flow of the subsystem;

[0049] Step 4: Determine the injection current of the boundary bus and the simulation curve of the boundary bus voltage.

[0050] In the step 1, according to the layout of the phasor measurement units, the power system is divided into multiple subsystems, and each subsystem is connected by a boundary bus, and the boundary bus is the bus on which the phasor measurement units are installed.

[0051] Described ste...

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Abstract

The invention provides a constant power interface-based hybrid dynamic simulation method. The method includes the following steps that: a power system is divided into a plurality of subsystems; a time sequence of equal time intervals is obtained; the initial power flow of the subsystems is obtained; and the injection current of a boundary bus and the voltage simulation curve of the boundary bus are determined. According to the method of the invention, a constant power interface can guarantee the consistency of the switching power of a research power grid and an external power grid and a measured value in a whole simulation period, and therefore, a foundation can be laid for the practical application of the hybrid dynamic simulation method.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a hybrid dynamic simulation method based on a constant power interface. Background technique [0002] With the expansion of the grid scale and the strengthening of the grid structure, the influence of any disturbance is spread to a wide area, and each change is the result of a large number of intertwined factors, making it very difficult to verify the validity of the simulation and locate the cause of the simulation error. The traditional dynamic simulation is mainly based on the pre-set load generator operation mode and predefined fault form. During the simulation process, it completely depends on the accuracy of the model and algorithm, and has no connection with the actual system. Inaccuracies in models or parameters can cause deviations between simulation results and actual system dynamic behavior. At the same time, the wide area measurement system (Wide Ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCY02E40/70Y02E60/00Y04S10/00Y04S10/22
Inventor 马世英丁平叶小晖安宁李芳陈兴雷赵敏宋新立
Owner CHINA ELECTRIC POWER RES INST
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