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Parameter identification method of electric power simulation model

A technology of parameter identification and power simulation, which is applied in the field of parameter identification of power simulation models, can solve problems such as independent identification, large amount of parameters, and difficult parameters, and achieve the effects of improving practicability, improving analysis accuracy, and good promotion and application prospects

Active Publication Date: 2021-03-09
HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0003] Since the power system simulation calculation process is the solution process of nonlinear equations, the amount of parameters involved is huge, and there is a mutual coupling relationship between the parameters. It is difficult to identify each parameter independently. A model-free identification method is needed to analyze the power system parameters identify

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  • Parameter identification method of electric power simulation model
  • Parameter identification method of electric power simulation model
  • Parameter identification method of electric power simulation model

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Embodiment Construction

[0024] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0025] see figure 1 , a parameter identification method for an electric power simulation model, comprising the following steps:

[0026] S1. Establish a power system simulation model, and set the initial parameter value of a certain line index of the simulation model And set the simulation threshold δ;

[0027] Wherein, the line index includes the resistance, reactance and admittance of the line, and the initial parameter value It can be selected by setting the theoretical value or the first measured value of the line index.

[0028] S2. Generate parameter disturbance value ΔC (j) , and calculate the parameter value after the perturbation as well as

[0029] In this embodiment, any normal constant is set as the parameter disturbance value ΔC (j) ,...

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Abstract

The invention provides a parameter identification method of an electric power simulation model, which comprises the following steps: S1, establishing an electric power system simulation model, settingan initial parameter value of a certain line index of the simulation model and setting a simulation threshold value delta; s2, generating a parameter disturbance value delta C (j), and calculating adisturbed parameter value; S3, putting the parameter value into the power system simulation model for calculation to obtain a first simulation value and a second simulation value of a line index; S4,calculating an iterative parameter value C (j + 1) based on the first simulation value and the second simulation value, and putting the iterative parameter value C (j + 1) into the power system simulation model for calculation to obtain a third simulation value delta (j + 1); and S5, if the third simulation value delta (j + 1) meets the requirement, taking the iterative parameter value C (j + 1) as the final parameter value of the line index.

Description

technical field [0001] The invention relates to the technical field of electric power simulation, in particular to a parameter identification method of an electric power simulation model. Background technique [0002] With the increasing development of the power system, there are more and more types of equipment parameters and operating data used for power system calculation and analysis, and the amount of data is also increasing. Accurate equipment parameters are used for power system protection setting, fault analysis, power flow calculation, The basis of loss analysis is of great significance to the safe and stable operation of power systems. Due to the huge number of required parameters, not all parameters have measured data, and the measured results of parameters are affected by factors such as test methods, environmental conditions, and operating conditions, and there are deviations from the actual situation. Therefore, the research on the identification method of pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q50/06G06F17/11
CPCG06F30/20G06Q50/06G06F17/11Y02E60/00
Inventor 梁钰
Owner HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST
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