Method for evaluating electric load safety of subway timetable

A technology for power load and safety assessment, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problem of inability to evaluate the load impact of driving timetables, and achieve the effect of ensuring the safety of electricity consumption

Inactive Publication Date: 2018-05-08
SHANGHAI SEARI INTELLIGENT SYST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional grid-connected load estimation is relatively rough based on historical experience, and it is impossible to evaluate the impact of the adjustment of the driving timetable on the load

Method used

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  • Method for evaluating electric load safety of subway timetable
  • Method for evaluating electric load safety of subway timetable
  • Method for evaluating electric load safety of subway timetable

Examples

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Embodiment Construction

[0019] In order to make the present invention more comprehensible, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings: this embodiment is implemented under the technical solution of the present invention, and the implementation process and effect of the present invention are given. The protection scope of the present invention is not limited to the following examples.

[0020] This embodiment takes Shanghai Metro Line 8 as an example to illustrate a method for evaluating power load safety of a subway timetable provided by the present invention. The present invention comprises the following steps:

[0021] Step 1. Obtain the current curve when the bicycle starts.

[0022] Obtain the current curve when the bicycle is started. In actual cases, it is measured by installing a PMU. PMU is a high-precision current acquisition device. Both incoming and feeder cabinets are installed. Draw a single-vehicle current...

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Abstract

The invention relates to a method for evaluating the electric load safety of a subway timetable. The method is characterized by comprising the steps of drawing a current curve when a single train starts; after segmenting an entire subway line, calculating a physical location of a power supply network where a subway train is located when departing; establishing a sharing model of the track tractionpower supply load current; calculating the load of a single power supply interval, and based on a predetermined threshold, determining whether a contact network is overloaded; calculating and judgingthe load of each power supply interval on the entire subway line; when each subway train departs, calculating and judging the load of each power supply interval of the entire subway line; and based on calculation and judgment results, evaluating the electric load safety of the timetable, and adjusting the departure interval as required. The method of the invention can estimate the load accordingto the existing timetable and prepare for power supply in advance for one thing, and for another, can adjust the timetable according to the existing power supply capacity to ensure the safety of powerconsumption.

Description

technical field [0001] The invention relates to a method for evaluating electric load safety of a subway timetable. Background technique [0002] The urban rail transit power system is the source of power for the operation of the subway system. It not only supplies power to the train, but also provides energy for systems such as communication, operation control, environmental control, and automatic fare collection, as well as stations, sections, depots, and control centers. etc. required power and lighting electricity. Once a failure occurs, the normal transportation order will be seriously disturbed, and the economic loss and social impact will be huge. Therefore, safety, stability, high quality and uninterrupted are the basic requirements of the urban rail transit power system. [0003] Most of the subway lines currently built in my country use centralized power supply, and special power supply stations are built for power supply. Although the subway power supply system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 李敏徐斌涛娄亭沈峰
Owner SHANGHAI SEARI INTELLIGENT SYST CO LTD
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