Author:
Fang Haochen,Wang Qi,Liu Xiaofeng
Abstract
Abstract
Aiming at the grid operation problems brought by large-scale photovoltaic(PV) connection to the distribution network, this paper proposes a two-stage scheduling strategy for air-conditioning load to participate in the PV absorption of distribution network, considering the schedulable capacity of air-conditioning load. First, in the first stage, in the micro-grid layer, each air-conditioning load aggregator(LA) makes a market bidding based on non-cooperative game to determine the day-ahead scheduling plan according to the plan of PV absorption formulated by the micro-grid operator in the past.; In the second stage, in the distribution network layer, when the micro-grid itself cannot fully absorb the PV power and the power is transferred to the main network, resulting in the voltage overlimit problem in the network, the grid company adjusts the voltage by using the schedulable capacity of air-conditioning load. The simulation results show that the strategy proposed in this paper can not only enhance the utilization of PV power and adjust the distribution network voltage, but also improve the profit of the air-conditioning LAs, reduces the regulation cost of the micro-grid operators and the grid company and has high economic efficiency.
Reference14 articles.
1. J. Journal of Modern Power Systems and Clean Energy;Pavan Kumar;Renewable energy based on microgrid system sizing and energy management for green buildings,2015
2. J. Automation of Electric Power Systems;Zhang;Siting and Sizing of Distributed Photovoltaic Power Station Considering Reverse Power Flow Constraints,2014
3. A review of high PV penetrations in LV distribution networks: present status, impacts and mitigation measure;Haque;J. Renewable and Sustainable Energy Reviews,2016
4. Research on influence of distributed photovoltaic generation on voltage fluctuations in distribution network;Yi;J. Measurement & Instrumentation.,2018