Optimization and economic analysis of distributed photovoltaic-energy storage system under dynamic electricity price
Artikel i vetenskaplig tidskrift, 2021

This paper investigated the influence of different dynamic electricity pricing schemes, energy storage capacity and unit capacity cost on the economics of PV-storage systems. The energy storage control stratety of improving the photovoltaic micro-grid self-consumption was adopted in this study. Taking an office building in Changsha as an example, the dynamic planning method was used to solve the system's best operating strategy and calculated the system' life cycle economy and PV self-consumption rate. The results showed that the system profitable area was increased by 87% for every 41.5% increase of dynamic electricity price. Moreover, the impact of energy storage capacity on system economics is greater than unit cost. The increase of dynamic electricity price is beneficial to increase the self-consumption of photovoltaic power generation, and the storage capacity and unit cost dominate the self-consumption of photovoltaic energy in different intervals.

Solar system

Electric energy storage

Photovoltaic self-consumption

Economic analysis



He Jia

Hunan University

Jinqing Peng

Hunan University

Nianping Li

Hunan University

Changfu Zou

Chalmers, Elektroteknik, System- och reglerteknik, Reglerteknik

Rongxin Yin

Lawrence Berkeley National Laboratory

Yingying Tai

Hunan University

Taiyangneng Xuebao/Acta Energiae Solaris Sinica

0254-0096 (ISSN)

Vol. 42 5 187-193



Annan naturresursteknik




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