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Adaptive governor control and load shedding scheme for an incinerator plant
Power Plants and Power Systems Control, Volume # 5 | Part# 1
Authors
Lee, Y. D.; Chen, C. S.; Hsu, C. T.
Digital Object Identifier (DOI)
10.3182/20060625-4-CA-2906.00075
Page Numbers:
413-418
Index Terms
governor control system,boiler,cogeneration system,load shedding,transient stability
Abstract
This paper presents an adaptive control strategy for the governor system of an incinerator cogenerator to maintain the steam pressure and system power frequency. Due to the unstable steam generation in incinerator plants, the turbine valves have to be controlled adaptively to keep the boiler steam pressure constant for normal operation. After tie-line tripping caused by utility faults, the governor system must be operated with constant frequency control for the islanding system. By this way, the surplus steam supply to turbines will be bypassed effectively. For the islanding operation, the deficiency of steam generation is then supplemented by boilers. To maintain the system stability after transient disturbance for the isolated system, the load shedding scheme is designed by considering the under steam pressure protection. According to the transient stability analysis, the system frequency can be restored successfully after tie-line tripping with the adaptive change of governor control system from the constant steam pressure mode to the constant frequency mode.
References
[1] C. S. Chen, Y. L. Ke, and C. T. Hsu (2000).
Protective relay setting of the tie line tripping and
load shedding for the industrial power system.
IEEE Trans. on Industrial Applications, Vol. 36,
No. 5, Sep./Oct., pp. 1226-1234.
[2] CYME International Inc. (1991). CYMESTAB/UDM
User's Guide and Reference Manual. Canada.
[3] F. P. de Mello (1991). Boiler models for system
dynamic performance studies. IEEE Trans. on
Power Systems, Vol. 6, No. 1, pp. 66-74.
[4] M. E. Flynn, M. J. O' Malley (1999). A drum boiler
model for long term power system dynamic
simulation. IEEE Trans. on Power Systems, Vol.
14, No. 1, pp. 209-217.
[5] Woodward Governor Company (1997). 505 Digital
governors for steam turbines with single of splitrangeactuators
Manual 85017V1.