Transmission network planning method and transmission network planning system

Abstract

The invention relates to a transmission network planning method and a transmission network planning system. The method is characterized by comprising the following steps: the line load rate of each line of the transmission network is determined, wherein the line comprises a power transmission out line and a main grid obtained after the line of the transmission network is divided according to the network structure and the transmission features of the line; through weighting of the line load rate of each line of the transmission network and the corresponding weight of each line, the overall operation efficiency of the transmission network is obtained; and according to the overall operation efficiency of the transmission network, the construction and investment cost of the transmission network, the operation cost of the transmission network and the wind curtailment loss cost, a transmission network planning scheme is determined. Compared with the traditional transmission network planning scheme, the transmission network planning scheme planned by adopting the method is more rational in structure and planning, the problem of serious wind curtailment loss brought by wind power integration can be lessened, the operation efficiency and the economy of the transmission network can be balanced integrally, and the method and the system of the invention can be widely applied to the technical field of power grid planning.

Description

technical field [0001] The invention relates to a transmission network planning method and system, and relates to the technical field of power grid planning. Background technique [0002] With the development of society, the social demand for electricity continues to increase, and the transmission network plays an important role in it. Planning, construction and investment of such a complex system require intensive technology and capital, not only directly related to the safe and economical operation of the transmission network, It also involves the allocation of resources and the impact of the environment. Therefore, the planning and design of the transmission network will receive more and more attention from groups outside the industry. The rapid growth of power demand is the core problem faced by power planning in the past. With the development of society, the growth rate of power demand has differentiated in different regions of the country, and new demands have emerged ...

AI Technical Summary

Problems solved by technology

China's renewable energy power generation is developing rapidly. However, the abandonment of water, wind or light in some areas is still very serious. The government and industry companies have adopted a number of measures to promote the consumption of new energy power. These new energy sources are variable. , Intermittent, and greatly affected by the regional environment. The uncontrollability of the source power and the instability of the output characteristics have a negative impact on the safe and stable operation of the transmission network. For this reason, many scholars at home and abroad are studying how to establish a set of Flexible transmission network to better adapt to the characteristics of new energy output and ensure safe and reliable operation of the transmission network after large-scale new energy grid integration

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