Evaluation of Grid Accepting Renewable Energy in Multi-Time Scale

doi:10.3969/j.issn.1000-7229.2017.07.006

Abstract

Abstract: ABSTRACT： The volatility and randomization of wind power and solar energy make power grid regard them as negative load in daily dispatch. The uncontrollable factors caused by renewable energy ratio in system lead to the results that the abilities for power grid to receive wind power and solar energy might be limited, including power grids peak-load regulation capacity, frequency regulation capacity, renewable energy output characteristics, load characteristics, external transmission channel of power network and so forth. Setting up renewable resources accepted index can reflect the “saturation level” of power grid, which can provide reference and evaluation basis for the operation and management of electric system. This paper presents the indicator system which can reflect multi-time scale power grids acceptance ability for renewable resources, based on the multiple factors influencing power grids acceptance ability. And then, this paper systematically evaluates the acceptance capacity of grid in short term, mid-term and long term three time dimensions respectively, with taking into account the operation security and economic factors of the system. Through index quantization value the power grids acceptance ability with the different proportion of renewable resources can be reflected.

Key words: accommodation ability, evaluation index, multi-time scale, renewable energy

CLC Number:

TM 73

LIU Dunnan, LI Qi, QIN Lijuan, ZHAO Jiawei. Evaluation of Grid Accepting Renewable Energy in Multi-Time Scale [J]. Electric Power Construction, 2017, 38(7): 44-.

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