Study On Loss Reduction Of Yanchi Distribution System And Reaction Power Compensation

Energy source plays an important role in the development of national economy, so exploiting energy source fully and reasonably and saving it can not only reduce the cost of national production remarkably but also benefit to the development of national economy. Electric power, as the best one in secondary energy, is the foundation of economy. For electric utilities, the line loss is an important technical index for assessing their technique and management levels; moreover, in practical operation reducing line loss is also an effective measure and approach for improving the economic benefits.Compare with the developed countries of the world, the line-loss rate of the power network of China is still high, so the potential of power save is also great. By the management conceptions of the power company have been upgraded, the line-loss rate of the power network of China will be advanced in the world with adopting modern management method, giving up extensive management, making better use of quantitative, operable and examinable scientific management methods, reducing the irrational line-loss to the least as it can be. This is not only the main aspect of the modern management of the power company, but also the necessary condition for the development of the power company.The topic is proposed to study and solve the high line losses and line voltage failure problem of Yanchi 10kV distribution network at the actual situation of Yanchi distribution network. This thesis introduces the theories about theoretical calculation of the line losses first, discusses calculation of the line losses for Yanchi power network by setting up models with the actual conditions of the power network of Yanchi. According to the analysis of the results based on the line losses and the limit voltage, a scheme of reducing losses by using reactive power compensation for Yanchi power network is presented. On the basis of the scheme of reducing losses, the line losses calculation is repeated.According to the comparison of the two results, the loss of the two lines is greatly reduced, the power factor is greatly improved, and the nodes voltage is qualified. The feasibility and economy of the scheme is validated. It has a great significance on the promotion of energy saving. The scheme in this thesis have an advantages of pertinence, can provide good reference for reducing line losses and the planning of power network.