Research Of Project Feasibility For220kV Baoxing Power Transmission In Jiangmen

As the steady development of economic and social of Taishan,220kV Taishan substationpower supply pressure will increase in the future, So a new220kV Baoxing substation torelieve Taishan power supply pressure, improve the northeast of Taishan city power supplyability and the reliability of power supply, to further improve the Jiangmen220kV gridstructure, ensure the safe and stable operation of power grids of Jiangmen, promote the rapiddevelopment of Taishan countryman economy, it plays a very positive role.On the basis of relevant standards on system, relay protection, a communication systemand telecontrol system are demonstrated in detail, Clear configuration principle:1. through the general layout and distribution equipment selection of different schemes,comparative analysis of the advantages and disadvantages, ultimately recommended by220kV and110kV voltage grade are used in outdoor open conventional equipment scheme2. determine the size and scope of the final design：the final size of transformer is4×180MVA, This phase of the project is2×180MVA;220kV voltage grade, double busbarconnection, the final size of6lines,4lines to this period;110kV voltage grade, double busbarconnection, the final size of12lines,5back;10kV voltage grade, single bus four subsectionwiring, the final size of30lines,20lines to this period; neutral point grounding mode:220kVand110kV voltage grade for main transformer neutral point use isolating switch directlygrounding.3. reasonable selection of substation, the voltage levels of power transmission distance isreduced as far as possible. Through the system, power transmission, substation three aspectsof energy analysis, puts forward the concrete measures of energy conservation and lossreduction.4. based on the engineering investment estimation and evaluation of economic benefit,the project economic index is more reasonable, accord with the requirements of Internet,reasonable investment return.Conclusion: from the power system, electrical, civil engineering, water and fire and otheraspects show that the project has the technical feasibility; according to the above analysis, theproject investment estimation, analysis of project economic benefits, investment return perioddo scientific estimates, the project also has the economic feasibility.