| In this paper, a new 220 k V Lanxi variants engineering, intelligent completion of 220 k V electrical substation part of the design.Lanxi is located in the southwest of Suihua City, Heilongjiang Province undertakes construction "Harbin, satellite towns" and "National flax City", Heilongjiang north shore commodity distributing center, the main task of the national commodity grain production base, at the same time focus on the development of agriculture, accelerate the development of deep processing of agricultural products Agricultural machinery processing and other industries. In recent years, Lanxi strong investment, and strive to absorb large enterprises and groups settled in Lanxi "five areas along." 2016 Lanxi load will reach 76.81 MW, 2020 Nian Lanxi load will reach 99.55 MW. However, the existing power grid construction and transformation capacity of the region have been unable to meet the power requirements, increase power supply is pressing. Therefore, from the electricity load demand, improve the power grid structure and ease the supply pressure Lanxi consideration shall provide new power point, to improve power grid reliability, and therefore proposed to build a 220 k V Lanxi change. Intelligent substation by substation, 220 k V and 66 k V Electric Equipment For outdoor use AIS, conventional transformer and intelligent components, intelligent primary equipment, and install on-line monitoring devices in the corresponding primary equipment. Secondary integrated automation platform based on IEC61850 communication protocol, according to the hierarchical distributed intelligent information sharing between electrical equipment and interoperability.In this paper, a lot of intelligent substation and smart grid construction, etc, on the basis of related literature, in combination with the practical situation of regional power that is suihua construction and west 220 k V substation project cases, mainly for the following research work.(1) for substation capacity balance analysis of the results, the main transformer capacity in lanxi.(2) according to the situation of power grid construction and planning situation Nancy variable access system scheme is put forward.(3) after the comparative analysis to determine access system scheme, and confirm the main electrical wiring and electrical equipment parameter selection.(4) determine the total station system relay protection configuration scheme.(5) complete electrical secondary design, and complete the electronic total station layer, spacer layer, process control network and equipment configuration.(6) complete substation intelligent auxiliary system design.(7) complete substation integration of ac/dc power supply system design.220k V substation electrical design is a systematic work, including the main electrical wiring design, the choice of transformer, electric equipment, and other important content, and, in many factors affect the power supply reliability of the main electrical wiring design and the selection of the transformer is especially important. This paper through a of 220 k V substation electrical parts in the design of the main electrical wiring design, relevant electrical calculation and parameters and selection of electrical equipment and electrical secondary device configuration analysis research on the several aspects such as, making the main electrical wiring scheme are further optimized; Through relevant electrical calculation and analysis of acquired the system principle and adjustment process, which provide the reliable basis for equipment type selection, make electrical once, electrical secondary equipment selection was optimized, and related equipment better matching theory to the actual value, to avoid too much selection caused by resources waste and electrical accidents caused by selection is too small. |
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