Evaluation of Transmission Grid Voltage Impact on the Operation of Power Units’ Auxiliary Systems
Journal Title: Acta Energetica - Year 2015, Vol 25, Issue 4
Abstract
This paper presents the low voltage impact on the operation of critical auxiliaries of selected generation units in the national power system. Time limits are determined for the operation of these auxiliaries at low voltage in the power system and the acceptable reduced voltages in their secondary circuits at which the generation unit is capable of interoperation with the system. Upgrades of auxiliary systems are proposed which would enable interoperation of the unit and the system at significantly reduced system voltages.
Authors and Affiliations
Józef Paska, Mariusz Kłos, Łukasz Rosłaniec, Rafał Bielas, Magdalena Błędzińska, Marek Głaz
The Method of Multi-criteria Analysis to Support the Decision on Load or Micro-generation Connection to a Low- or Medium-voltage Power Grid
This paper presents a method that supports the decision in terms on selecting the best option of a load connection to a low- or medium-voltage power distribution grid, and of a micro-generation source connection to a low...
Detection of Differently Loaded Power Network Areas
A widely accepted method of simplifying power system problems, especially for large system, is solving them for areas into which a system is divided. The paper considers separation of the power system areas that contain...
Automatic Synchronization of Power Systems in Comprehensive and Qualitative Terms
This paper presents issues related to the automatic separation of a power island from a power system, and to its opera-tion and synchronization. Issues concerning the complexity of technical solutions are presented with...
Torrefaction as a Means to Increase the use of Solid Biomass for Power Generation and Heating
A technical constraint of the use of solid biomass in high power pulverized coal boilers is the clear divergence of physiochemical properties of this type of fuel compared to boiler coal. It implies coal units’ operating...
Influence of Power System on Operation of an HVDC Link. A Case Study
An HVDC link enables power and energy exchange between unsynchronised power grids. Large possibilities of controlling active power flows through such systems enable commercial transfers, as well as emergency power balanc...