Results 161 to 170 of about 1,034,905 (229)

Analysis and Treatment of Three-Phase Unbalance Problem

2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference (ITNEC), 2020
Once the three-phase unbalanced problem occurs in the power supply and distribution system, it will cause damage to the lines, transformers and power equipment. This paper analyzes the causes and harms of the three-phase imbalance problem and summarizes the management methods of the three-phase imbalance problem.
Dongliang Feng, Zhouming Chen, Zhuohui Jiang, Linglan Yan, Neng Qian, Xiju Zong   +5 more
openaire   +2 more sources

A Three-Phase Allocation Strategy Solving Three-Phase Unbalance Problem in Air Conditioners’ Applications

2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 2019
A large number of high-power single-phase electric heating loads, represented by air conditioners entering into domestic consumption is easy to cause asymmetric distribution of three-phase loads in three-phase four-wire power supply system. It is difficult to popularize traditional post-treatment methods for three-phase unbalance problems because of ...
Yanbo Che, Siyuan Xue, Wei He, Hailian Bi, Liangliang Liu   +4 more
openaire   +2 more sources

Voltage Unbalance Compensation with Smart Three-phase Loads

2016 Power Systems Computation Conference (PSCC), 2016
This paper describes the design, proof-of-concept simulations and laboratory test of an algorithm for controlling active front-end rectifiers to reduce voltage unbalance. Usinginputs of RMS voltage, the rectifier controller allocates load unevenly on its 3 phases to compensate for voltage unbalance originating in the power supply network.
Douglass, Philip, Trintis, Ionut; id_orcid 0000-0001-9581-8910, Munk-Nielsen, Stig; id_orcid 0000-0001-9653-5437   +2 more
semanticscholar   +3 more sources

Model Predictive Control for Three-Phase Unbalance Compensation under Three-Phase Four-Wire Power System

2019 IEEE 8th International Conference on Advanced Power System Automation and Protection (APAP), 2019
With the increasing unbalanced loads connect to the three-phase four-wire power system, three-phase unbalance caused by these loads will reduce the service life of electrical equipment and increase line loss. To solve these problems by reducing the three-phase unbalance, a three-level neutral point clamped compensator based on model predictive control ...
Nan Jin, Chao Pan, Xiaoqiang Ma, Shaoyu Shi, Yanyan Li   +4 more
openaire   +2 more sources

Space-vector approach in three-phase unbalance and distortion analysis

2016 17th International Conference on Harmonics and Quality of Power (ICHQP), 2016
This paper shows that the space-vector approach is an eminent and powerful tool in three-phase analysis. It is able to manage in a unitary way the sinusoidal, distorted and transient conditions. Its complex Fourier series implements a formal unification between unbalance and distortion; such unification is conceptually significant and leads to ...
SUPERTI FURGA, GABRIO, BARCELLONA, SIMONE, TIRONI, ENRICO   +2 more
openaire   +2 more sources

Joint Voltage and Phase Unbalance Detector for Three Phase Power Systems

IEEE Signal Processing Letters, 2013
This letter develops a fast detection algorithm for voltage and phase unbalance in three phase power systems. It is suitable for real time applications since the required observation length is one cycle. It is shown to successfully detect small unbalance conditions at low SNRs. Its detection performance is shown to outperform traditional detectors that
Ming Sun, Sefa Demirtas, Zafer Sahinoglu
openaire   +2 more sources

Voltage unbalance mitigation in LV networks using three-phase PV systems

2015 IEEE International Conference on Industrial Technology (ICIT), 2015
In this paper a new method is proposed to mitigate voltage unbalance caused by single-phase solar inverters in low voltage (LV) networks. The method is based on uneven reactive power absorption and injection by three-phase solar inverters. Independent control of each phase is performed to achieve this uneven injection.
Cristina Garcia Bajo, Seyedmostafa Hashemi, Soren Bakkoj Kjsar, Guangya Yang, Jacob Ostergaard   +4 more
openaire   +2 more sources

Bi-level Optimal Placement Model of Phase Switch Devices for Mitigating Three-Phase Unbalance in Low-Voltage Areas

IEEE Transactions on Power Systems, 2022
Three-phase unbalance could have significant impacts on the secure and economic operation of a low-voltage distribution system. With the deployment of smart meters and the emergence of phase switch devices (PSDs), more efficient schemes for mitigating ...
Shengyuan Liu, Zhenzhi Lin, Jiaqiao Li, F. Wen, Yi Ding, Qin Wang, Feng Lu, Li Yang   +7 more
semanticscholar   +1 more source

Practical Method for Mitigating Three-Phase Unbalance Based on Data-Driven User Phase Identification

IEEE Transactions on Power Systems, 2020
Unbalanced operation of a three-phase distribution system could incur more power losses, compared with the balanced operation. So far, the phase information of users in low voltage areas is not recorded by power utilities and the three-phase unbalance ...
Shengyuan Liu, Renyun Jin, Haifeng Qiu, Xueyuan Cui, Zhenzhi Lin, Zikuan Lian, Zhian Lin, F. Wen, Yi Ding, Qin Wang, Li Yang   +10 more
semanticscholar   +1 more source

Optimal Sizing and Siting of Soft Open Point for Improving the Three Phase Unbalance of the Distribution Network

International Conference on Electrical Machines and Systems, 2018
A stochastic scenario-based optimal sizing and siting model of soft open point (SOP) for improving the three phase unbalance of the distribution network with fully consideration of the uncertainties of the distributed renewable energy (DREs) and loads is
Hao Xiao, W. Pei, Kong Li
semanticscholar   +1 more source