Research on Reactive Power Coordination Control Scheme of Energy Feedback Device in Urban Rail Transit Power Supply System
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 9
Abstract
Objective Currently, the urban rail transit power supply system mainly relies on the main substation SVG (static var compensator) for reactive power compensation. During non-operating hours at night, the medium voltage loop network lines of urban rail transit power supply system are basically unloaded, and the charging reactive power of the lines is high, causing SVG to operate under heavy load for a long time. To alleviate the compensation pressure of SVG, a reactive power coordination control scheme for energy feedback device is proposed, coordinating SVG and the energy feedback devices in the traction substation to jointly participate in reactive power compensation. Method The calculation method of the energy feedback device reactive power compensation capacity is analyzed, and the reactive power coordination control strategy for the SVG and energy feedback device is proposed. Finally, on-site tests on a certain metro line are performed, verifying the correctness of the above strategy. Result & Conclusion When the energy feedback devices of a metro line are all put into use for reactive power compensation, the SVG reactive power compensation capacity can be reduced by 2.6 Mvar to the most, and the total active power loss of the me-dium voltage loop network line can be reduced from 0.7 MW to about 0.5 MW.
Authors and Affiliations
Jiawei ZHAO, Li WANG, Dayun ZOU, Genjun CHEN, Kai XIE
Simulation Research on Temperature Control of Metro Underground Substation Main Transformer Room
Objective Huge heat is generated during underground substation transformer operation. Failure to promptly dissipate this heat can lead to problems such as transformer overheating, equipment malfunctions, and even fire ac...
Asset Management Value Oriented Nanjing Metro Asset Information System Construction
[Objective] In the process of URT (urban rail transit) asset formation, there are challenges in the smooth transmission of asset information, leading to issues such as ′inconsistency between accounts and reality,′ diffic...
Exploration of Urban Rail Transit Logistics Organization Models
Objective In order to make full use of the surplus capacity of urban rail transit and develop logistics services, with Shenzhen Metro as an example and based on the compatibility between urban distribution market and urb...
Analysis of Railway Hub Function and Passenger Flow Demand under the Integrated Station-City-People Development
[Objective] Under the integrated station-city-people development, the railway passenger transport hub is upgraded to a new type of urban space that provides emotional connection and sustenance while undertaking transpo...
Shear and Seismic Performance Analysis of New Component Connection Schemes for Urban Rail Transit Prefabricated Underground Stations
Objective To further promote the application of underground prefabricated structures in urban rail transit projects, research on key technologies (especially new component connection schemes) is conducted for the entry/e...