Response tests of load-frequency control in thermal power plants regarding Union for the co-ordination of Transmission of Electricity (UCTE) policies

Active and reactive power flows are independent from each other and they are controlled by different methods in an interconnection system. The control of active power is closely related to frequency control and the control of reactive power is related to voltage control. Frequency control is a necessary parameter in order to both indicate energy quality of electricity network and join Turkish interconnected system to Union for the Co-ordination of Transmission of Electricity (UCTE). UCTE in Europe mainland is a huge organization and has own policies. The most important parameter of those policies is load-frequency control. The interconnection of Turkish electrical network with UCTE network is an ongoing project since the end of 90?s and tests are persisting in both hydro power plants and thermal power plants chosen as references in Turkey via TEİAŞ.The goal of this thesis is to investigate primary load-frequency control involved in UCTE policies for thermal power plants. Turbine controller of reference power plant is modeled and simulated by using Matlab/Simulink program in the thesis. Load-frequency performance of reference power plant is achieved by the field test. The results of tests are transferred into computer via Digsilent software and results of tests are compared with results of simulations.