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ORIGINAL PAPER

The use of HRTSim to optimize the control parameters of fast turbine valving control Anton Kievets1

· Aleksey Suvorov1 · Alisher Askarov1 · Vladimir Rudnik1 · Gusev Aleksander1 · Bay Yuly1

Received: 10 July 2020 / Accepted: 20 October 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020

Abstract In case of sharp disturbances in the electric power system (EPS), emerging transients may be accompanied by a loss of synchronism. This incident may lead to cascade-fault severe consequences for the whole EPS. One of such consequences may be the occurrence of an active power overgeneration in one part of the electric power system. In this regard, it is necessary to apply actions to implement targeted effects on transients in EPS. The most technologically and economically advantageous is the use of fast turbine valving control (FTVC). The task of this automation is to maintain the dynamic and static stability of overgenerated area. However, the effectiveness of FTVC is mainly dependent on its control action (CA). Tuning the parameters of FTVC is not a trivial task, because it is necessary to take into account the processes and their mutual influence in the equipment not only directly involved in the FTVC but also in the EPS as a whole. The article shows the results of FTVC action with various CA configuration. The use of complete and reliable mathematical models of equipment not only directly involved in FTVC but also EPS, as well as a tool capable of working with similar types of models, allowed the optimization of FTVC CA parameters. Keyword Fast turbine valving control · Mathematical simulation · Momentary fast turbine valving control · Setting up · Sustained fast turbine valving control

List of Symbols PISP K RC KC TC TD TF X MAX4 X MIN4 T CB PISP0 K SH SC PG ωG

B 1

Initial steam pressure Integral regulator Proportional regulator Steam boiler controller time constant Fuel injection delay time Time constant of the fuel system and the waterwall Steam generation maximum limit Steam generation minimum limit Steam drum time constant Set initial steam pressure Superheater coefficient Pressure selection Power generated Generator frequency

Anton Kievets [email protected] Division for Power and Electrical Engineering, School of Energy & Power Engineering, Tomsk Polytechnic University, Lenin Avenue 30, Tomsk 634050, Russia

TT KF PS ωS X MAX1 X MIN1 K STAT K LR PMAX PMIN PGV RM KR X MAX2 X MIN2 X MAX3 X MIN3 T HP T LP K1 K FF

Converter time constant Deviation coefficient frequency Power value setting Frequency value setting Frequency maximum limit Frequency minimum limit Speed controller statism Turbine reference load factor Generator power maximum limit Generator power minimum limit Set generator power value Power generator selector Speed controller time constant Slide valve maximum limit Slide valve minimum limit Servomotor position maximum limit Servomotor position minimum limit High-pressure section time constant Intermediate-pressure section time constant Power fraction of high-pressure