摘要：Fast-valving assists in maintaining system stability following a severe transmission system fault by reducing the turbine mechanical power.Fast-valving consists in rapid closing and opening of steam valves in an adequate manner to reduce the generator accelerating power following the recognition of a severe fault.FV can be an effective and economical method of meeting the performance requirements of a power system in the presence of an increase in wind and solar generation in the power system,newly connected large thermal units and delaying of building new transmission lines.The principle of fast-valving and advantages of applying this technique in large steam turbine units was presented in the paper.Effectiveness of fast-valving in enhancing the stability of the Polish Power Grid was analyzed.The feasibility study of fast-valving application in the 560 MW unit in Kozienice Power Station (EW SA) was discussed.
