Voltage control of critical and non-critical loads in distribution networks with electric spring

TY - JOUR

T1 - Voltage control of critical and non-critical loads in distribution networks with electric spring

AU - Askarpour, Mohammad

AU - Aghaei, Jamshid

AU - Khooban, Mohammad Hassan

AU - Shafie-khah, Miadreza

AU - P.S.Catalão, João

PY - 2019/12

Y1 - 2019/12

N2 - The electric spring (ES) is a novel voltage compensator which is series with a non-critical load to regulate the critical load voltage. The voltage fluctuation is caused by wind speed fluctuation, load fluctuation, and generator tripping. In busbar voltage drop situation, the electric spring decreases the voltage of non-critical load in order to support the critical load (busbar) voltage. All the non-critical loads couldn’t work under any voltage (for example 0.5 pu). In this paper, a control strategy founded on active and reactive power compensations has been proposed for voltage control of critical loads on a reference value while it controls the voltage of non-critical loads between an acceptable boundary. The proposed controller has two voltage control loops which adjusts active and reactive power of the electric spring. The experimental results from the case study show that the ES with the proposed control strategy can effectively mitigate double voltage control of both critical and non-critical loads while dynamically managing the demand response of the system at the same time.

AB - The electric spring (ES) is a novel voltage compensator which is series with a non-critical load to regulate the critical load voltage. The voltage fluctuation is caused by wind speed fluctuation, load fluctuation, and generator tripping. In busbar voltage drop situation, the electric spring decreases the voltage of non-critical load in order to support the critical load (busbar) voltage. All the non-critical loads couldn’t work under any voltage (for example 0.5 pu). In this paper, a control strategy founded on active and reactive power compensations has been proposed for voltage control of critical loads on a reference value while it controls the voltage of non-critical loads between an acceptable boundary. The proposed controller has two voltage control loops which adjusts active and reactive power of the electric spring. The experimental results from the case study show that the ES with the proposed control strategy can effectively mitigate double voltage control of both critical and non-critical loads while dynamically managing the demand response of the system at the same time.

KW - Active and reactive power control

KW - Critical loads

KW - Distribution networks

KW - Double voltage control

KW - Electric spring

KW - Non-critical loads

UR - https://www.sciencedirect.com/science/article/pii/S0378779619303074

UR - https://www.scopus.com/pages/publications/85070697337

U2 - 10.1016/j.epsr.2019.105988

DO - 10.1016/j.epsr.2019.105988

M3 - Journal article

SN - 0378-7796

VL - 177

JO - Electric Power Systems Research

JF - Electric Power Systems Research

M1 - 105988

ER -