Abstract
The article addressed the issue of commissioning task that must take place before putting out-ofstep protection into operation. Most of the developers of digital out-of-step protection devices utilize control of impedance vector locus parameter during transient in a power system to detect its out-of-step operation, however checking the setting of such protection in the field conditions using existing means is often a challenging work. To facilitate the commissioning of such devices and provide means to automatize the process so as to rid of human factor the authors suggest means of simulating impedance vector locus with the desired parameters on the complex plane to check distance out-of-step protection. The means for checking current-oscillation based out-of-step protection is also considered. The results of a transient simulation representing instantaneous values of currents and voltages are saved in the international oscillography recording format COMTRADE, which makes it possible to carry out comprehensive verification of emergency control equipment using any kind of testing equipment that is able to generate the corresponding electrical signals stored in such format.
Highlights
The results of a transient simulation representing instantaneous values of currents and voltages are saved in the international oscillography recording format COMTRADE, which makes it possible to carry out comprehensive verification of emergency control equipment using any kind of testing equipment that is able to generate the corresponding electrical signals stored in such format
Out-of-step protection (OOSP) is one of the most important types of emergency control automation designed to prevent the development of an emergency situation caused by a loss of dynamic stability of a power system
OOSP algorithms simultaneously control many parameters of the electric power network, and are very difficult to implement, and checking their settings in the process of commissioning is labor-consuming. Verification of such automation is carried out with use of “RL-model of the power system” software which is included in the set of basic programs of the RETOM device
Summary
Out-of-step protection (OOSP) is one of the most important types of emergency control automation designed to prevent the development of an emergency situation caused by a loss of dynamic stability of a power system. OOSP algorithms simultaneously control many parameters of the electric power network, and are very difficult to implement, and checking their settings in the process of commissioning is labor-consuming. Verification of such automation is carried out with use of “RL-model of the power system” software which is included in the set of basic programs of the RETOM device (hardware-software testing equipment manufactured by research-and-production company “Dinamika”). The means should allow to simulate power system in the loss of synchronism conditions and in the case of stable power swings The creation of such tools would reduce labor costs, and improve the quality of commissioning. To achieve the task set, it is necessary to use mathematical simulation
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