POWER FACTOR AUTOMATIC COMPENSATION WITHIN 20/6KV ELECTRICAL TRANSFORMATION STATIONS
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2011, Vol 35, Issue 35
Abstract
The addition of the compensation of the power factor is one technical measure to improve the functioning of the electrical installations. Because the loads of the electrical installations show fluctuations in 24 hours and during one calendar weeks the number of capacitors that must be active must be variable according to the reactive power that must be compensated. This is done by step capacitor batteries with automatic connection controlled by a dedicated electronic equipment with microprocessor. The equipment receives information on the offset between the installation current and voltage that is to be compensated according to which it connects or disconnects the necessary capacitor steps to the distribution system lines, so that the power factor to be kept around a preset value. The equipment permanently displays the instant power factor value and it is provided with an abnormal functioning state warning block. This way the paper presents ways to do automatic compensation of the power factor within electrical supply stations within a single 20/6kV transformer of 4 MVA power and also the compensation of the power factor within electrical supply lines within two 20/6 kV transformers of 2x4 MVA. The solution presented is distinguished in that it solves the problem of power factor compensation at a transformer station upgraded. Capacitor connection is made automatically by coupling or decoupling capacitors steps by comparison with the difference prescribed.
Authors and Affiliations
Mircea DOBRICEANU, Gheorghe Eugen SUBŢIRELU, Octavian Dan DOBRICEANU
Keywords
Related Articles
- EP ID EP134884
- DOI -
- Views 149
- Downloads 0
The Analysis of Biphasic Short Circuit Regimes to Doubly-fed Induction Generators Connected to a Power System
The paper presents analysis of the biphasic short circuit regimes at the terminals of doubly fed induction generator connected to the national power system of the Republic of Moldova. Research related to connecting wind...
A NEW MODEL FOR AC PLUNGER-TYPE MAGNETS IN STEADY-STATE REGIME
This paper proposes a new model for plunger-type magnets that could be used in SPICE simulations of some complex systems. The model uses a new advanced modeling technique of ferromagnetic cores that was developed in the...
A PROCEDURE FOR SPECIFIC MAGNETIC LOSSES CALCULATION IN FeSi ELECTRICAL SHEETS
The losses in the magnetic circuit of electrical machines produce machine heating and reduce efficiency with implications in lifetime and energy save. The factors that affect the losses in magnetic circuits of electrical...
The Influence of the Output Current Deforming Regime on the Input Current Harmonics for a Three-Phase Rectifier Bridge
The present paper was created based on the desire of the author to realize a systemic approach of static converters in general and especially of rectifiers. Looked as system from energetic point of view, a rectifier coul...
Testing a Filtering and Regeneration System on a Recuperative Stand
The paper has three main objectives: the presen-tation of a laboratory model of a system for active filtering and regeneration (SISFREG) developed through an applied research collaborative project in the frame of Partner...