1. CHE Energy Xinjiang Jilintai Hydropower Development Co., Ltd., Yining, Xinjiang 835000, China; 2. Shanghai TRIE Industry Co., Ltd., Shanghai 200240, China; 3. Xinhua Control Engineering Co., Ltd., Shanghai 200240, China; 4. CHE Energy Xinjiang Energy Co., Ltd., Urumqi, Xinjiang 830000, China
Abstract：In response to the lack of bifurcation description in the hydraulic coupling mathematical model of a common hydraulic unit generator unit, a differential expression for the pressure at the bifurcation point of the common pipe was introduced, which was combined with the hydraulic system and governor model to form a new mathematical model for the hydraulic generator group. Simulation was conducted under the conditions of conjugate and anti yoke regulation of the group, based on the dynamic changes of bifurcation pressure, the hydraulic interference characteristics and complex adjustment matching problems of the common hydraulic unit cluster were explored to flexibly adopt the intra group coordination method when participating in the coordinated control of the machine network of the common hydraulic unit cluster, and meet the fast adjustment requirements of AGC and primary frequency regulation. Simulation experiments have confirmed the beneficial effects of anti yoke regulation, and the configuration implementation method based on general DCS provides practical conditions for its engineering online application.
