Abstract The use of reference model adaptive control of generator voltage to improve steady state stability and to reduce unit stress in generators operating with in delicate stability conditions leads us to use microcomputers in the realisation phase. The fondamental constraints of time and of calculation impose on the one hand the choice of a 16-bit microprocessor (the TMS 9900 of T.I.) and on the over a distributed system architecture. The algorithms of the four floating operations were not fast enough, terminals which for example carry out the multiplication in floating mode on 32-bit in 200 ns is built. The parallelisation of three micro-computers each carrying out specified task followed by exchanges between memories, enables to gain a factor of three on the time. Example of sampled period realised for adaptive control : 100 ms. To validate these regulators, mathematical model of generators which had to be simulated on an autonomous microprocessor are built. The connection of this simulator with the complex regulator in real time, gives an excellent test of verification of the algorithms developped. The adaptive controler of generator voltage as realised (three micro-computers in parallel) and tested on its simulator is connected in real time, at the EDF micro-network which represents a good approximation of the french power network. The ultimate phase consists of tests to be realised in a thermal power plant, the voltage regulator will be connected to a real generator of 250 MW connected to the french power network.
Adaptive control of generator voltage using microcomputers simulation
1980-01-01
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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