Research On Regional Power Network Planning

During the eleventh five-year plan period, the power load in southern and central district increases rapidly and power supply is strained, which has affected the industry and people's life badly and implicated the development of the economy in this district. In order to make the central power grid meet the whole planing economy development in this district, it is necessary to launch the study of grid planing in Heyuan central district.According to the city planning, t a load forecast in the planning district has been has conducted using load density and lateral comparative methods, and this load forecasting result will provide scientific data for annual grid planning. Under the guide of technology principle of China Southern Power Grid Company and Guangdong Power Grid Company and in combination of the characteristics of Heyuan central district, this paper puts forward the developing plan for central grid and defines the goal of central grid. Also, this paper works out the constructed technological principle of grid construction, substation line and facilities selection and revises the principle of Heyuan grid planning. All these principles will be directly used for the power planning in central district. Furthermore, themal power balance has been conducted in accordance with load forecasting, grid planning annually for the twelveth five-year plan in central district, and the prospective of the grid above 110kV from 2015 to 2020 has been proposed. In addition, grid planning will link with city planning, bring the fruit of grid planning into city planning, and control the location of substation of substation and high-tension line, which make the planning with high operablity.Finally, investment budget for this planned power construction has been conducted. According to the principle of economy and technology conbination, the power construction has been arranged reasonably, which will meet the load requirement, save power investment at the same time, and play an active role in guiding grid construction.