Research On Energy Conservation In The Power Distribution Network Of A Country Area

At present, China is in an important stage of development, rapid economic growth and people's living standards have improved steadily. But in the last 20 years of the 20th century, China's energy consumption double that support the economic to quadruple. In this period of investment as the main force of economic growth, China's energy consumption significantly increased, and the elasticity coefficient of energy substantial increase. Resources and environmental constraints and rapid economic growth are conflict. It has become China's future economic and social development challenges. The problem for the whole society is not allowed to evade. For our country's immediate and long-term interests, constructs a resource-saving and environment-friendly society, with a clear policy direction. As for the coal-based electrical industry, energy saving is particularly important.But first, the structure of China's power grid and the equipment are all outdate, such as in the distribution network of power system, the old transformers with high energy consumption are too many, lack of control, and the accident rate is high and the high loss; Second, network operation and management get behind, emphasizing safe operation, ignored the operation of the economy. Third, the EHV transmission lines are underweight in network, the substation's layout is not reasonable enough, some network capacity-load ratio is inadequate. The series capacitor compensation, compact lines, and other advanced technology applications are lack. Causing the line loss and the network loss remained high. In short, our network loss is more than the world's major industrial countries'. China's energy consumption in urban and rural power network is promising.The paper is based on the actual distribution network of a county-level region, by calculating the 10kV line's actual power flow and network loss, a line reactive compensation and optimization method are referred to. Thus enabling the lines operate economically and reliable. Energy conservation and reducing network loss was got at the same time. It offers engineering application for the whole distribution network's energy consumption.Transformer is a large number of in the distribution network. Transformer operation economic has a significance for the distribution network. The products of transformer's development are introduced in the paper. The old transformers with high energy loss must eliminate from this region's power system. The paper focused on the rational choice of transformer capacity. According to the voltage standard, adjust transformer tap and other measures to achieve the transformer's economic operations.Through analysis the two aspects of energy conservation and reducing network loss about the lines and the transformers, make the distribution network of county-level areas optimal, achieving lower power loss, energy conservation and protect the environment.