中国电力概况_电力英语.ppt

HUI REN @ NCEPU 电力英语 任 惠 华北电力大学电力工程系（保定） 专业文献 中国电力工业概况 电力系统组成及运行 电力市场介绍 继电保护概念及基本特性 电力系统通信 电力系统大停电事故 中国电力工业概况简介 词 汇 Generation mix Installed capacity Thermal power Coal-fueled, coal-fired, coal power Gas turbine Hydro power Nuclear power Wind power Wind farm Wind turbine, blade Solar power Photovoltaic Solar water heaters Bio-mass Grid interconnection Grid interconnection Power supply and demand China’s installed capacity and power generation output are second largest in the world’s electricity industry following the United States Power supply and demand China has become a country with the second largest installed capacity in the world, being only next to US. 中国的装机容量居世界第二，仅次于美国 Power supply and demand Coal is the major generation supply fuel. The proportion of coal power is so high that the installed capacity of coal power accounts for 73% of the total installed capacity, and the generation volume of coal power is 1,807TWh, accounting for 83% of the total generation volume. 煤电的比例非常高，占总装机容量的73％，发电量为1,807 TWh，占总发电量的83%。 Tera: 1012 TWh: Tera Watts hour The features of China’s energy structure determine such a power mix with coal power as the major component. The coal resources in China account for 11% of the world’s total coal reserves, and oil and natural gas account for 2.4% and 1.2% of the total reserves respectively. During a relatively long period in the first three decades of the 21st Century, the primary energy mix with coal playing a dominant role will not be changed. 中国能源结构的特点决定了煤电在电能中的主导地位。中国的煤储量占世界总储量的11%，油和天然气分别占总储量的2.4%和1.2%。在21世纪初很长一段时间内，煤占主导的主要能源结构不会发生变化。 Power supply and demand Power supply and demand Power supply and demand Increasing load meant increasing currents, which caused unacceptable voltage drops if generating stations were located at any appreciable distance from the loads. 增加负载意味着增加电流，如果发电站建立在远离负载的地方，这就会引起无法承受的电压降。 Load Currents Voltage drops Appreciable distance The requirement of keeping generation in close proximity to loads became incr