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Rapid calculation method of node conductance matrix in subway load flow calculation

A power flow calculation and fast calculation technology, applied in calculation, complex mathematical operations, instruments, etc., can solve the problems of large amount of calculation and slow speed of subway power flow

Active Publication Date: 2020-08-11
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to propose a fast calculation method for the node conductance matrix in the subway power flow calculation, to solve the problem that the subway power flow calculation amount is very large and the speed is slow

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  • Rapid calculation method of node conductance matrix in subway load flow calculation
  • Rapid calculation method of node conductance matrix in subway load flow calculation
  • Rapid calculation method of node conductance matrix in subway load flow calculation

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Embodiment

[0128] A fast calculation method of node conductance matrix in subway power flow calculation, is characterized in that, comprises the following steps:

[0129] 1) Enter the location and number information and network parameters:

[0130] The position and quantity information of the components includes the distance between the traction substation and the total number of traction substations relative to the starting point of the up train, the distance of the up train relative to the starting point of the up train and the number of vehicles in the up train, the distance between the down train and the starting point of the up train and the number of vehicles in line;

[0131] The network parameters include catenary unit resistance, running rail unit resistance and track-to-ground leakage unit resistance.

[0132] 2) Number the traction substation and divide the power supply interval:

[0133] 2-1) The traction substations are numbered from 1 to n according to the distance from t...

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Abstract

The invention provides a rapid calculation method for a node conductance matrix in subway load flow calculation, and the method comprises the steps: sequentially carrying out the sequencing and continuous numbering of a traction substation, an uplink train and a downlink train according to the distance relative to the starting point of the uplink train, and dividing power supply sections; constructing a node conductance matrix comprising YSS, YSU, YsD, YUS, YUU, YDS and YDD, and setting each sub-matrix to be zero; and correcting the YSS according to the relationship between the train cycle counting frequency and the train number and the processing mark vector of the power supply section to which the train belongs, calculating the YSU and the YUU or calculating the YUU or correcting the YSS, and calculating the YSD and the YDD or calculating the YDD. Elements in the node sub-conductance matrix are calculated through single-layer circulation, repeated calculation of the elements is avoided, and the calculation efficiency of the algorithm is improved.

Description

technical field [0001] The invention relates to the technical field of subway power flow simulation calculation, in particular to a fast calculation method for node conductance matrix in subway power flow calculation. Background technique [0002] With the rapid development of my country's economy, subways appear in most cities across the country due to their advantages of large passenger capacity, no congestion and no delay. It is very important for subway operators to ensure the safety of subway power supply during operation, and power flow calculation is an important means of guarantee analysis. [0003] At present, in the simulation of subway power flow calculation, for the calculation of the node conductance matrix, the main idea is to sort and calculate the node conductance matrix for the uplink catenary or the downlink catenary, and finally combine the uplink and downlink catenary traction substation nodes; In the calculation of the uplink catenary and the downlink c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06F17/16G06Q50/06
CPCG06Q10/06393G06Q50/06G06F17/16Y02E60/00
Inventor 张超李红波黄子昊罗文广刘华东梅文庆
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST