Influencing Factors on Power Grid Reliability Index Based on System Dynamics

doi:10.3969/j.issn.1000-7229.2015.12.019

Abstract

Abstract:

Reliability is an index, of great importance, to evaluate the level of power grid. Traditionally, the idea to improve the reliability of power grid is to use technical method and improve the specifications of power grid construction, which ignore the role that the government plays in this issue. In order to study the relationship between grid reliability and government actions such as the implementation of demand side management （DSM） and the incentive on transmission and distribution price, firstly, a simplified reliability evaluation index was presented based on the capacity-load ratio, an evaluation model of grid reliability was built based on system dynamics, and the causal loop diagram and the system stack flow chart were presented as well. Then, the simulation was carried out on the model by VENSIM under different scenarios, which revealed the relationship of the grid reliability index, demand-side resource permeability and the incentive on transmission and distribution price. The results show that the increase of demand-side resources can bring economic benefits without influencing the power grid reliability；there is an obvious positive correlation between the incentive strength of government on transmission and distribution price and the grid reliability index of power grid；and the government can keep the reliability index at a high level by slightly incenting the transmission and distribution price. Finally, some suggestions on the reliability improvement of power grid were proposed for the government, based on the example results.

Key words: grid reliability, government actions, system dynamics, demand-side resources, transmission and distribution price

CLC Number:

TM 71

ZENG Ming, ZHONG Qiongxiong, LI Yuanfei. Influencing Factors on Power Grid Reliability Index Based on System Dynamics[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(12): 123-130.

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