Cooperative Control by System Voltage Control Equipments in Consideration of Reducing Capacity of STATCOM

Abstract

In recent years, the number of renewable energy sources (RESs) such as photovoltaic generation systems and wind power generation systems connected to the grid has been increasing as a way of reducing negative effects on the environment. The outputs of these RESs vary rapidly because of the influence of the weather and the conditions of the location. Therefore, there are concerns that the point voltages in a distribution system may vary drastically and that the voltages may deviate from the appropriate voltage range as a result of the influence of the RES connected to the distribution system or to the diversification of loads. Furthermore, there are concerns about adverse effects on electric power quality, such as voltage imbalances and harmonics. In this paper, we propose a cooperative voltage control method for a distribution system using system voltage control equipment in order to reduce the capacity of the static synchronous compensator. Numerical calculations were performed in order to verify the validity of the proposed method. C⃝ 2015 Wiley Periodicals, Inc. Electr Eng Jpn, 194(1): 1-9, 2016; Published online in Wiley Online Library (wileyonlinelibrary.com).

Capacity determination of a battery energy storage system based on the control performance of load leveling and voltage control

“…The output of the reactive power is calculated according to the voltage deviation from the dead band using Equation (4), which is the calculation formula of the proportional-integral (PI) control created based on [5].…”

A Study on Improvement of Power Qualityby STATCOMs for Low Voltage System

“…Moreover, the active filter has been used to suppress harmonics in the distribution system. Most of these devices are installed at the high voltage system, and the various studies on the voltage management by them in the distribution system interconnected DGs have been done [1][2][3][4]. However, most of the DGs are generally installed in the low voltage system and the number of them will be increasing more and more in the future.…”

Study on a Voltage Estimation of Tap‐Changing Transformer in Consideration of SVC Introduction

“…In this context, a centralized control method was proposed . In such method, all devices in the system are connected by network, and the obtained system information is used to successively determine optimal SVC output and tap position in LRT as well as SVR so as to implement cooperative control.…”