Application of Automatically Controlled Distributed Generation Plants in Railroads Power Supply Systems

摘要

New technological platform of Russia's power generation industry, based on smart grids concept, provides for a broader application of distributed generation plants. These plants can operate as parts of existing grids, or be pooled in micropower systems (network clusters). The article is dedicated to the issues of distributed generation plants application to raise efficiency of non-traction consumers power supply systems. In this case, a special attention was paid to enhancing the quality power supplied to non-traction consumers via application of the distributed generation plant which is controlled by concordantly set generator automatic voltage regulators (AVR) and automatic speed governors (ASG). The study was carried out in Matlab environment on a created railroad power supply system model. Turbo generators having power 2.5 MVA and rated rotational speed 1,000 rpm and 3,000 rpm were simulated in order to assess distributed generation plant effect on power supplied to nontraction consumers, damping speed of voltage and rotational speed when variations in power generation system operation occur. The studies conducted helped to detect that application of distributed generation plant with concordantly set AVR and ASG makes it possible to enhance power quality for non-traction consumer and ensure dynamic stability and resilience of railroad line power supply system.