Field tests and operation of a duplicate multiprocessor-based governor for water turbine and its further development

Abstract

A duplicate microprocessor-based governor(DpPG) contains 2 redundant processing modules. A research prototype has been transferred to an industrial product. This paper gives the details of the hardware and software and the field test results.The paper also gives an evaluation of the financial benefits with examples from the 11 DpPGs operating at seven different hydro-power plants in China. A proposal is presented for a new DpPG with a control strategy based on intelligent self-improvement.

An Adaptive Fuzzy PID Control of Hydro-Turbine Governor

“…The early power systems were small, often regionally far from the consumer loads and individually isolated. Consequently, classical methods were used to adjust governor parameters for acceptable performance by using a single-input-single-output control structure [7]. But conventional governors did not respond satisfactorily over the whole range of plant operation .In addition, non-linearity exists in the models of the hydro-turbine and the electric generator.…”

Study of Electro-Hydraulic Converter with Strong Restoring-Motion

“…The electro-hydraulic control devices of the stepping speed turbine governor have been studied successfully at the end of the 1980s and the beginning of the 1990s domestically. Since then, a lot of interests have been refocused on the development and research of electro-hydraulic control technology in our country's turbine governor industry [3,4,5]. Though each kind of scheme had its own characteristics and scope of application, the traditional electro-hydraulic converters still had many disadvantages such as poor oil contamination tolerance, big zero excursion and great oil consuming.…”