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Method and system for checking electric power system model based on hybrid dynamic simulation

A hybrid dynamic simulation, power system technology, applied in system integration technology, information technology support systems, electrical components, etc., can solve the problems of inaccurate power system model checking and inability to accurately judge whether the power system model structure and parameters are reasonable. , to achieve the effect of accurate judgment and avoid intermediate errors

Active Publication Date: 2010-02-17
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0010] To sum up, the current three methods all have defects, which will result in inaccurate verification of the power system model, and it is impossible to accurately judge whether the structure and parameters of the power system model are reasonable.

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  • Method and system for checking electric power system model based on hybrid dynamic simulation
  • Method and system for checking electric power system model based on hybrid dynamic simulation
  • Method and system for checking electric power system model based on hybrid dynamic simulation

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Embodiment Construction

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0046] See figure 1 , The figure is a flowchart of the first embodiment of the method of the present invention.

[0047] The power system model verification method based on hybrid dynamic simulation provided by this embodiment includes:

[0048] S101: Collect active power and reactive power of lines connected to all PMU installation nodes in the subsystem to be verified, and obtain a time sequence of the measured values ​​of active power and reactive power injected by the PMU installation nodes.

[0049] The time series of the active power and reactive power PMU measurement values ​​of all lines connected to the same PMU installation node are respectively accumulated and inverted to obtain the time of the injected active pow...

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Abstract

The invention provides a method and a system for checking an electric power system model based on hybrid dynamic simulation. The method comprises the following steps: collecting the active power and the reactive power of circuits connected with all PMU installation nodes in a subsystem to be checked, and obtaining a time series of measurement values of the input active power and reactive power ofthe PMU installation nodes; collecting voltage amplitude values and voltage phase angles of all PMU installation nodes in the subsystem to be checked, taking the voltage amplitude values and the voltage phase angles as the input of hybrid dynamic simulation containing multiple slack nodes, and obtaining a time series of calculated values of the input active power and reactive power of the PMU installation nodes; comparing the time series of the measurement values and the time series of the calculated values, and then judging whether the structure and parameters of the subsystem to be checked are reasonable or not. The invention avoids the existence of median errors without introducing any new element, and therefore, whether the structure and parameters of the electric power system model are reasonable or not can be accurately judged.

Description

Technical field [0001] The invention relates to the technical field of power system dispatching automation, in particular to a power system model checking method and system based on hybrid dynamic simulation. Background technique [0002] Dynamic simulation based on the time domain is an important tool for people to understand the dynamic behavior of the power system, which is related to the planning, operation and control of the power system. The accuracy of power system component models and parameters has a fundamental impact on the accuracy of dynamic simulation. Therefore, the power system component models and parameters need to be carefully checked. [0003] Combining the measurement data quickly collected by the Wide Area Measurement System (WAMS, Wide Area Measurement System) with the traditional simulation program, the hybrid dynamic simulation method for verifying a subsystem or a single device of the power system is electric power A trend in system model checking. In or...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06F17/50
CPCY02E60/728Y02E60/76Y04S10/265Y04S40/22Y02E40/70Y02E60/00Y04S10/00Y04S10/22
Inventor 吴文传张伯明伍双喜孙宏斌
Owner STATE GRID CORP OF CHINA
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