低浓度瓦斯发电站关键技术分析

为指导煤矿低浓度瓦斯发电站的正确设计和安全运行，以贵州某煤矿为例，对瓦斯燃料气源的赋存和供应进行研究，结合建设场地限制、用电负荷、电力接入等条件，从经济和技术方面开展了低浓度瓦斯发电站建设经济与关键技术分析，最终确定了发电站的瓦斯气源安全输送方式、装机容量、装机台数、站场布置与经济效益可行性。工程应用表明，干式低浓度瓦斯输送安全保障系统符合现场应用和安全要求，2×500 kW的装机规模容量能适应气源波动且经济合理，400 V电力接入和10 kV:35 kV升压变压器符合供配电条件，站场布局合理规范，满足发电站建设工程需求，节能减排的同时，具有良好的经济和社会效益。

Analysis on key technology of low concentration gas power station

In order to guide the correct design and safe operation of coal mine low-concentration gas power station，a coal mine in Guizhou was taken as an example to study the occurrence and supply of gas fuel gas source，combined with construction site restrictions，power load，power access and other conditions.From the economic and technical aspects，the economic and key technical analysis of low-concentration gas power station construction was carried out，and the safe transportation mode，installed capacity，installed capacity，station layout and economic benefit feasibility of the gas source of the power station were finally determined.The engineering application showed that the dry low-concentration gas transmission safety guarantee system met the field application and safety requirements.The installed capacity of 2×500 kW could adapt to the fluctuation of gas source and was economical and reasonable，400 V power access and 10 kV:35 kV boost the transformer met the requirements of power supply and distribution，and the station layout is reasonable and standardized to met the needs of the power station construction project.At the same time of energy saving and emission reduction，it had good economic and social benefits.