A heat providing turbine generator of 200MW takes place a malfunction load rejection in last winter, and speed upswing rapidly, then leads to mechanic emergency protection device act, as a result turbine tripped.

• 某电厂 2 0 0 MW供热机组在冬季供热期发生了故障甩负荷 ,机组转速飞升导致汽机危急保安器动作 ,引起机组跳闸。