Three-phase Voltage Control Method by Single-phase Distributed Generators Connected to Islanded Distribution Network

This paper proposed a low cost wireless monitoring system based on ZigBee wireless transmission, and designed a new floating voltage sensor which is suitable for the monitoring of medium voltage and high voltage(MV/HV) public equipment. The system used TI-CC2530 as the controller, proposed a new moving average voltage sensing(MAVS) algorithm by reasonable assumptions, and adopted algorithms to perform the theoretical analysis for the single phase and three-phase voltage. At last, the author carried out a practical experiment on the wireless floating voltage sensor under the voltage up to 30kV, the experimental results showed that the proposed low cost wireless sensor can achieve a good voltage monitoring function, and the error is less than 3%.

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Control method for DC-link voltage ripple cancellation in voltage source inverter under unbalanced three-phase voltage supply conditions

IEE Proceedings - Electric Power Applications ◽

10.1049/ip-epa:20040986 ◽

2005 ◽

Vol 152 (3) ◽

pp. 494 ◽

Cited By ~ 16

Author(s):

M. Chomat ◽

L. Schreier

Keyword(s):

Control Method ◽

Voltage Source ◽

Phase Voltage ◽

Voltage Source Inverter ◽

Voltage Supply ◽

Voltage Ripple ◽

Three Phase ◽

Ripple Cancellation

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MULTI UNITS OF SINGLE PHASE DISTRIBUTED GENERATION COMBINED WITH BATTERY ENERGY STORAGE FOR PHASE POWER BALANCING IN DISTRIBUTION NETWORK

Jurnal Teknologi ◽

10.11113/jt.v78.9887 ◽

2016 ◽

Vol 78 (10-4) ◽

Author(s):

Amirullah Amirullah ◽

Mochamad Ashari ◽

Ontoseno Penangsan ◽

Adi Soeprijanto

Keyword(s):

Energy Storage ◽

Single Phase ◽

Low Voltage ◽

Distribution Network ◽

Battery Energy Storage ◽

Current Harmonics ◽

Line Current ◽

Distributed Generators ◽

Distribution Line ◽

Battery Energy

Randomly installed distributed generators (DGs) in households may cause unbalanced line current in a distribution network. This research presents a battery energy system for balancing of line current in a distribution network involving multi units of single phase photovoltaic (PV) distributed generators (DGs). In this paper, the PV generators were simulated consisting of a buck-boost DC/DC converter and single phase DC/AC inverter. It was connected to the distribution line through the low voltage 220 volt 50 Hz. The proposed phase balancing system uses battery energy storage and three single phase bidirectional inverters. The inverter is capable of injecting current or absorbing power from the line to the battery. This inverter operation is arranged to balance each distribution line separately, as well as to improve other power quality parameters, such as voltage and current harmonics. Simulation results show that the system was capable of improving the unbalanced line current from 15.59 % to 11, 48 % and unbalanced line voltage from 1.76 % to 0.58 %. The system was able for increasing current harmonics from 0.98 % to 1.03% and voltage harmonics from 38.96% to 39.08%.

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