Reactive power control of power conditioning systems to avoid voltage deviation in high‐voltage distribution systems caused by both of photovoltaic generation and electric vehicle charging

Abstract

The introduction of electric vehicles has been increasing as well as photovoltaic generation systems. These introductions cause the voltage drop and rise on high‐voltage distribution lines, so that voltage deviation will be out of the specified voltage range. As a countermeasure against this problem, the voltage control method with static Var compensators (SVCs) is implemented. However, SVCs are expensive and power losses on the distribution line increase. This paper proposes a novel voltage control method in which power conditioning systems output leading and lagging reactive power aiming to solve the above‐mentioned problems. It is clarified that the proposed method is more effective in solution of these problems than compared with the voltage control method using SVCs.

Challenges and opportunities of FACTS devices interacting with electric vehicles in distribution networks: A technological review

“…The (CVUPFC) center node unified power flow controller can meet a variety of power flow control goals, including reactive shunt and series compensation, phase shifting, and a higher degree of control freedom [248]. To address the aforementioned issues, this work presents a unique voltage management technique in which power conditioning units output leading and lagging real RP [249]. An electromagnetic hybrid compensation system (EHCS) and control technique are presented to achieve costeffective remuneration for the large-capacity negative sequence currents produced by high train load [250].…”

Two-Step Intelligent Control for a Green Flexible EV Energy Supply Station Oriented to Dual Carbon Targets

“…On the basis of Formulas ( 9)-( 17), the maximum carbon emission quota constraints of the "Photovoltaic-Storage-Charging-Change" integrated system are considered in this paper, as shown in Formulas (19) and (20) [38]:…”

“…Given that EV energy supply stations are connected to the power grid, some researchers used hierarchical control, improved droop control [12] or sequence arrangement control strategies [13], distributed algorithms, consensus algorithms [14], and heuristic algorithms [15] to guide the charging load of EV energy supply stations. Researchers who were focused on system frequency stability realized overall load variance and charging cost reduction in [16,17], and realized peak shaving and valley filling in [18,19]. Meng Chao, et al aimed at the collaborative control problem of nonlinear multi-agent systems.…”