Article

Introducing custom power

Electric Power Res. Inst., USA
IEEE Spectrum (Impact Factor: 0.94). 07/1995; DOI: 10.1109/6.387140
Source: IEEE Xplore

ABSTRACT Changes in customers' needs require improvements in the reliability and quality of the electricity supply. This paper describes how the concept of custom power is now becoming familiar. The term describes the value-added power that electric utilities and other service providers will offer their customers in the future. The improved level of reliability of this power, in terms of reduced interruptions and less variation, will stem from an integrated solution to present problems, of which a prominent feature will be the application of power electronic controllers to utility distribution systems and/or at the supply end of many industrial and commercial customers and industrial parks.< >

0 Followers
 · 
150 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A Distribution Static Synchronous Compensator (D-STATCOM) is essentially an ac-voltage source where the magnitude, phase angle and frequency in the output voltage can be controlled. However, it can be considered a current injection device due to its shunt connection. This duality is exploited in this paper to develop two different controls for a D-STATCOM based on voltage-source converter (VSC). The first control acts directly on the current which is injected in the equipment, and the other one acts on the output voltage of the power converter. Simulation results with different situations, such as, faults, capacitive and inductive loads present the reliability of the proposed system. In the digital model the D-STATCOM is in a shunt connection with a 50 kVA load and the voltage regulated on the load bus and the power factor regulation can be observed. A load current distortion composed of fifth harmonic was inserted to analyze the behavior of the equipment.
    VII International Conference on Industrial Applications; 01/2006
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A new optimization paradigm based on hybrid differential evolution is developed to solve the challenging problem of optimal steady state operation of unified power quality conditioner in a primary electric power distribution system. The objective is to minimize the power losses and improve voltage profile to determine the best location and the size of unified power quality conditioner (UPQC) while the load constraints, network constraints and operational constraints are satisfied. The voltage compensation can be done by using active power as well as reactive power. The problem is formulated as a non-linear multi-objective that cannot be efficiently solved by conventional optimization techniques. To illustrate the effectiveness of the proposed paradigm, simulation studies have been carried out on a 69 bus radial distribution system to define the number, optimal location and sizing of UPQC devices to be installed.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A new optimization paradigm based on hybrid differential evolution is developed to solve the challenging problem of optimal steady state operation of unified power quality conditioner in a primary electric power distribution system. The objective is to minimize the power losses and improve voltage profile to determine the best location and the size of unified power quality conditioner (UPQC) while the load constraints, network constraints and operational constraints are satisfied. The voltage compensation can be done by using active power as well as reactive power. The problem is formulated as a non-linear multi-objective that cannot be efficiently solved by conventional optimization techniques. To illustrate the effectiveness of the proposed paradigm, simulation studies have been carried out on a 69 bus radial distribution system to define the number, optimal location and sizing of UPQC devices to be installed.