A Simulation Calculation Method for Power Frequency Sequence Parameters of Transmission Lines
A power transmission line, simulation calculation technology, applied in the direction of calculation, electrical digital data processing, computer aided design, etc., can solve the problems of interference in the test process, affecting the accuracy of measurement results, etc., and achieve the effect of reliable power frequency parameters
Active Publication Date: 2020-05-15
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0049] The present invention is described in detail below in conjunction with accompanying drawing:
[0050] A simulation calculation method for power frequency sequence parameters of transmission lines according to the present invention, the overall process is as follows Figure 5 shown, including the following steps:
[0051] 1. Data collection
[0052] 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.
[0053] 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.
[0054] 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.
[0055] 4) Obtain the involved soil resistivity parameters....
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a simulation calculation method for power frequency sequence parameters of a power transmission line. The simulation calculation method comprises the steps of obtaining parameters and transmitting the 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 a to-be-calculated power transmission line; and calculating sequence parameters of the power transmission line: calculating positive sequence short circuit impedance and positive sequence open circuit impedance according to voltage and current phasors detected by simulation, and calculating positive sequence impedance and positive sequence capacitance according to the positive sequence short circuit impedance and the positive sequence open circuit impedance; and calculating zero sequence short circuit impedance and zero sequence open circuit impedance according to the voltage and current phasors detected by simulation, and calculating zero sequence impedance and zero sequence capacitance according to the zero sequence short circuit impedance and the zero sequence open circuit impedance. The researched simulation calculation method for the power frequency sequence parameters of the power transmission line is suitable for any power transmission line.
Description
technical field [0001] The invention relates to the field of calculation of power frequency parameters of power transmission lines, in particular to a simulation calculation method for power frequency sequence parameters of power transmission lines. 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 parameters at home and abroad. The first method is mainly to obtain line parameters 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 environment and other conditions of the overhead wire, which is called accurate calcula...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/367
CPCG06F30/367
Inventor 张青青苏永智韦良张岩王庆玉张高峰王大鹏
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY