A voltage control method using EVs in the power distribution system including a mass of PVs

2017 ◽  
Author(s):  
Akiko Takahashi ◽  
Naoki Matsumoto ◽  
Jun Imai ◽  
Shigeyuki Funabiki
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Control Method ◽  
Voltage Control ◽  
Power Distribution System

A Novel Control Strategy for Three-Phase Four-Wire STATCOM

2012 ◽  
Vol 516-517 ◽  
pp. 1722-1727 ◽  
Author(s):  
Wei Jun Yun ◽  
Gang Yao ◽  
Li Dan Zhou ◽  
Chen Chen ◽  
Jun Min Pan
Keyword(s):  
Control Strategy ◽  
Power Distribution ◽  
Distribution System ◽  
Reactive Power ◽  
Control Method ◽  
Loop Control ◽  
Power Distribution System ◽  
Imbalance Problem ◽  
Three Phase ◽  
Close Loop Control

Nowadays Static Synchronous Compensator (STATCOM) has gradually become one of the representative techniques in the field of dynamic reactive power compensation in the power distribution system. This paper analyzed the topology and the voltage imbalance problem of the up and down capacitors on DC side of the three-phase four-wire STATCOM. In allusion to the imbalance problem of neutral point, a novel control strategy based on the control of zero-sequence current was proposed. By the triple close-loop control strategy, the STATCOM can achieve great control accuracy and dynamic performance. Simulation result proves that the proposed control method is effective.

Based on STATCOM in Power Distribution System Design and Simulation

2012 ◽  
Vol 220-223 ◽  
pp. 1249-1253 ◽  
Author(s):  
Qi Chao Zhang
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Reactive Power ◽  
Control Method ◽  
Effective Means ◽  
Fast Response ◽  
Current Control ◽  
Power Distribution System ◽  
Line Loss ◽  
Node Voltage

The basic role of the STATCOM are continuous and rapid control of reactive power, fast response, issued or absorb reactive power to control the transmission system it is connected to the node voltage, inhibition of harmonic pollution, reduce line loss. The development of STATCOM is to solve the problem of voltage stability and effective means, is the main development direction of DFACTS technology. According to the direct current control method to design compensation device, emphatically introduces the device main circuit design step and process, and use MATLAB software simulation, the feasibility of the design is proved.

scholarly journals Resonance Propagation and Elimination in Integrated and Islanded Microgrids

2018 ◽  
Vol 9 (3) ◽  
pp. 1445
Author(s):  
K. V. Siva Reddy ◽  
SK. Moulali ◽  
K. Harinadha Reddy ◽  
Ch. Rami Reddy ◽  
B. V. RajannaRajanna ◽  
...  
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Control Method ◽  
Short Circuit ◽  
Open Circuit ◽  
Propagation Model ◽  
Power Distribution System ◽  
Micro Grid ◽  
Virtual Impedance ◽  
Resonance Propagation

In this paper, a micro grid resonance propagation model is investigated. To actively mitigate the resonance using DG units, an enhanced DG unit control scheme that uses the concept of virtual impedance is proposed. It can be seen that a conventional voltage-controlled DG unit with an LC filter has a short-circuit feature at the chosen harmonic frequencies, whereas a current-controlled DG unit presents an open-circuit characteristic. The application of underground cables and shunt capacitor banks may introduce power distribution system resonances. This paper additionally focuses on developing a voltage-controlled DG unit-based active harmonic damping technique for grid-connected and islanding micro grid systems. An improved virtual impedance control method with a virtual damping resistor and a nonlinear virtual capacitor is proposed. The nonlinear virtual capacitor is used to compensate the harmonic dip on the grid-side inductor of a DG unit LCL filter. The virtual resistance is principally answerable for micro grid resonance damping. The effectiveness of the proposed damping method is examined using each a single DG unit and multiple parallel DG units<strong>.</strong>

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