Steady state modeling of custom power components in power distribution networks

Abstract

Utilities have traditionally carried out power flow and fault current calculations in their distribution network for monitoring and planning purposes. The network is controlled and operated as a complete system. Network information systems (AMEM-GIS) and different distribution management systems (DMS, SCADA) are the most common software platforms used for completing the task. The calculations are performed in steady state. Solid-state and energy storage based power conditioners, i.e. custom power devices introduce a new generation of active components in the network. To be able to control and operate the network also the new components have to be modeled for steady state simulation and furthermore implemented in the established applications. The models provide the utility software with proper tools for the network power flow, harmonic power flow and energy flow calculations. Also new tools for power quality management can be developed.

Mitigation of Voltage Sag and Swell Using Distributed Power Flow Controller

“…The impact of transient parameters in majority of transmission lines problems such as sag (voltage dip), swell (over voltage) and interruption, are also considerable [1]. To mitigate the mentioned power quality problems, the utilization of FACTS devices such as power flow controller (UPFC) and synchronous static compensator (STAT-COM) can be helpful [7] , [8]. In [9], the distributed power flow controller (DPFC) is presented which has a similar configuration to UPFC structure.…”

Effect of Upfc on System Performance Under Normal and Fault Condition

“…A well designed FACTS Controller can not only increase the transmission capability but also improve the power system stability. UPFC is the most comprehensive multivariable flexible AC transmission systems controller [1][2].Investigations have been carried out to study the effectiveness of these devices in power-quality mitigation such as sag compensation, harmonics elimination, unbalance compensation, reactive power compensation, powerflow control, power factor correction and flicker reduction [5][6]. These devices have been developed for mitigating specific power-quality problemsThis paper is organized as follows.…”

Development of the Unified Series-Shunt Compensator for Power Quality Mitigation

“…In general, FACTS devices are used in transmission control whereas custom power devices are used for distribution control. Since the introduction of FACTS and custom power devices such as Unified Power Flow Controller (UPFC), synchronous static compensator (STATCOM), dynamic voltage restorer (DVR), solidstate transfer switch and solid-state fault current limiter have been are developed for improving power quality and reliability of a system [8][9][10] . Advanced control and improved semiconductor switching of these devices have reached a new era for power quality mitigation.…”