Simulation calculation method for power frequency phase parameters of power transmission line
A power transmission line, simulation calculation technology, applied in calculation, electrical digital data processing, design optimization/simulation, etc., can solve problems such as interference in the test process, affecting the accuracy of measurement results, etc.
Active Publication Date: 2017-05-10
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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Problems solved by technology
During the actual measurement, due to the induced voltage and current induced by the operating line on the measurement line, it will interfere with the test process and seriously affect the accuracy of the measurement results.
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[0075] The present invention is described in detail below in conjunction with accompanying drawing:
[0076] like Figure 8 As shown, a simulation calculation method for power frequency and phase parameters of a transmission line includes the following steps:
[0077] 1. Data collection
[0078] 1) Obtain the information of the transmission line involved, including the transmission line model, inner diameter, outer diameter, DC resistance value, split number, split spacing, sag, and phase sequence.
[0079] 2) Obtain the data of the ground wire involved, including the ground wire type, inner diameter, outer diameter, DC resistance, sag, grounding method, and ground wire protection angle.
[0080] 3) Obtain the information of the transmission tower involved, including the tower model, height, span, suspension point and parameters of the wire on the tower.
[0081] 4) Obtain the involved soil resistivity parameters.
[0082] 2. Data analysis and calculation
[0083] The obt...
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The invention discloses a simulation calculation method for power frequency phase parameters of a power transmission line. The simulation calculation method comprises the steps of obtaining power transmission line parameters and transmitting the power transmission line parameters to an ATP-EMTP simulation system; building an ATP-EMTP simulation model; setting the power transmission line parameters: setting related parameters of a power transmission line module in the ATP-EMTP simulation system according to the obtained basic parameters of the power transmission line, a ground wire and a power transmission tower, and soil resistivity along the power transmission line; and applying a source to an operation line; and calculating phase parameters of the power transmission line: calculating phase self-impedance, phase self-capacitance, phase mutual-capacitance and phase mutual-impedance in the phase parameters of the power transmission line by adopting a single-terminal method or a double-terminal method. According to the simulation calculation method, a mode of combining program simulation with formula calculation is adopted, so that simulation calculation is more accurate, efficient and convenient than formula calculation and is more accurate than approximate estimation; and electrostatic and electromagnetic interference of the operation line on a calculation line can be eliminated, so that test check is provided for field actual measurement.
Description
technical field [0001] The invention relates to the field of power system simulation calculation, in particular to a power frequency phase parameter simulation calculation method of a power transmission line. Background technique [0002] EMTP (Electro-Magnetic Transient Program) is a simulation software for electromagnetic transient analysis of power systems. It is the most widely used program for high-voltage power network and power electronics simulation in power systems. [0003] At present, there are two basic methods for obtaining power frequency phase parameters at home and abroad. The first method is mainly obtained through formula calculation. The calculation method can be divided into two types: one is to substitute the specific parameters into the calculation formula one by one according to the structure, material, temperature and environment of the overhead wire, which is called accurate calculation; Finding the phase parameters of the line per unit length is ca...
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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 张青青王兴照张高峰韦良李广磊王大鹏
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY