Influence & Study Of Harmonic Wave In Power System To Gts' Safe Operation

The backward countries and regions in power development, due to unsound power construction and management, weak power grid, far less than the required generation capacity in power system and infinite load fluctuations, can not guarantee the quality of power supply, so that frequency, voltage, waveform, symmetry degree deviation from standardized conditions, frequency and voltage change without any regularity on the whole, have seriously affected the safe and reliable operation of gas turbine generator sets. Particular emphasis on economic development alone, less limit on the network load, a number of equipment with large consumption of power, serious performance deterioration, enter and result in more and more nonlinear loads in supply network gradually, such as silicon rectifier equipment and frequency (speed) control device, making the power grid to increase the harmonic content, resulting in decreased power quality, and harmonic "pollution" as serious waveform distortion of voltage and current. Even if the power grid construction has become more sophisticated in China, it will not only lead to reduce security of electrical equipment itself, and would seriously weaken and disturb the economic operation of power network, result in the grid "public hazard", due to power electronic products, rectifiers, inverters and other non-linear loads, and electric arc furnaces, large rolling mills, electric locomotives and other shock, volatility load, causing harmonic "pollution", making the voltage fluctuation, flicker, phase imbalance growing. His safety and reliability factors, when a gas turbine power plant operating under such a power supply state, greatly reduced. Therefore, this article, through researching and testing the harmonic situations of power network that supplies power to the gas turbine power station as the background of study, analyzes the harmonic conditions of the grid to study the harmonic control measures, mainly for the following work: 1, describe briefly the basic concepts of harmonic source and harmonics, analyze the root cause and major harm of harmonic done, and Research and Development of the harmonic problems at home and abroad.2, introduce the gas turbine power generation technology status and main power station components, analyze harmonics influence and harm to safe operation of gas turbine station in power system, causes and reasons of main harmonics problems to be produced in and affect the Station, in addition to make clear the importance of harmonic control further, through the analysis and treatment cases, and comparison of effects before and after treatment of harmonic problem to influence to the Station safe operation in recent years.3, analyze simply sources of the harmonic of gas turbine power station, introduce an general situation of power network in Shengli Oilfield, discuss and study the main harmonic sources and the various harmonics control measures of Shenli power network, based on its harmonic field research, testing and analysis, put forward the power system harmonics management proposal and its selection and control principles.4, harmonic control and treatment of the silicon rectifiers as an example, introduce and verify the harmonic control measures and its effect, proposed to strengthen the management of equipment access system.5, some a gas compressor station as an example, compare and contrast influence of harmonic wave before and after treatment to GTS'safe operation.