Journal of South China University of Technology(Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (12): 105-108.

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Power Network Planning of Large-Scale Units Accessed to Power Systems Based on Layers and Zones

Zhong Qing1  Zhu Ran2  Ren Zhen2   

  1. 1.Guangdong Power Grid Corporation,Guangzhou 510600,Guangdong,China;2.College of Electric Power,South China Univ.of Tech.,Guangzhou 5 10640,Guangdong,China
  • Received:2005-07-11 Online:2005-12-25 Published:2005-12-25
  • Contact: 钟清(1965-)，女，硕士，高级工程师，主要从事电力系统规划、运行工作研究
  • About author:钟清(1965-)，女，硕士，高级工程师，主要从事电力系统规划、运行工作研究

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Abstract:

The development of power network in China has entered the new stage of bulk power network interconnection and trans-regional power network interconnection.It is imperative for the operation of the whole power network to reinforce the network of the receiving system.In the planning of the receiving system,the determination of the voltage level for the access of a large-scale power plant to the power grid is significant to the power and voltage supports of the receiving system as well as to the operation of the inner power network in the receiving system.On the basis of the practical experiences of power system planning,this paper analyzes the advantages of the access of a large-scale power plant to the 500 kV power network,and the problems to be considered.A case study is finally presented to illustrate how to use the principles,such as simplifying the wire connection in power plant,diocrsifi-caring the external powers sources and connecting the network by layers and zones,to determine the voltage level
for the access of a large-scale power plant to the power grid.

Key words: power system planning, receiving system, access system