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Power system transient stability simulation method based on multiple sparse vector road sets

A transient stability and sparse vector technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of not fully considering the transient stability calculation of the power system, and achieve the effect of avoiding the calculation amount and speeding up the solution speed

Inactive Publication Date: 2015-04-29
ZHEJIANG UNIV
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Problems solved by technology

However, the existing sparse vector method is only aimed at solving ordinary linear matrix equations with sparse properties, and does not fully consider the characteristics of power system transient stability calculations and the characteristics of active nodes in power networks, and there is still room for improvement

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  • Power system transient stability simulation method based on multiple sparse vector road sets
  • Power system transient stability simulation method based on multiple sparse vector road sets
  • Power system transient stability simulation method based on multiple sparse vector road sets

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] Such as figure 1 As shown, a kind of power system transient stability simulation method based on multi-sparse vector road set of the present invention comprises the following steps:

[0034] Step 1: Input the original data and information of the power system, perform power flow calculation, use the power flow calculation result as the system operating variable y(0), and calculate the initial value of the system state variable x(0);

[0035] Step 2: Form the differential equations and network algebraic equations describing the transient process of the power system, and classify the active nodes. One type is the node directly related to the node voltage calculated by the virtual injection current in the solution of the network algebraic equation, denoted as A The other is the nodes whose virtual injection current does not change with the node voltage in...

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Abstract

The invention discloses a power system transient stability simulation method based on multiple sparse vector road sets. In power system transient stability calculation, the sparse vector technology of the sparse structure of network algebraic equation independent vectors and solution vectors is widely applied. In the existing sparse vector technology, close attention is only paid on the high sparsity of the network algebraic equation independent vectors and the solution vectors, an active node road set is formed to conduct solving, and the characteristics that different solution vectors are needed in different stages of iteration solving of the network algebraic equation in the transient stability calculation process are not taken into consideration. According to the power system transient stability simulation method, the characteristics of active nodes in the network are taken into full consideration, the active nodes are divided into two types, three different sparse vector road sets are formed, different sparse vector road sets are adopted in different steps in the solving process, and thus unnecessary calculation is further avoided. By means of the power system transient stability simulation method, the calculated amount of solving the differential and algebraic equation can be obviously reduced in the power system transient stability simulation.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and in particular relates to a power system transient stability simulation method for forming a plurality of sparse vector road sets and performing previous generation back generation. Background technique [0002] Power system transient stability analysis is one of the most basic and core contents in power system analysis and calculation. Advanced technologies such as online dynamic security analysis, security and stability emergency control, preventive control, and intelligent dispatching have been gradually required to be popularized and applied in power systems. The precondition for realizing these advanced technologies is fast, accurate and reliable transient stability simulation calculation for large-scale power systems. [0003] Numerical integration is the most accurate and reliable method for power system transient stability calculation. The biggest disadvantage of the n...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F19/00
CPCH02J3/00H02J3/003H02J2203/20
Inventor 王建全高一凡肖谭南黎萌张春燕张仲驰
Owner ZHEJIANG UNIV
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