| 摘要 |
<p>A substation (10) for distributing electric power includes protective relays (51, 53, 55) whose trip points are made to be a function of temperature, the protective relays being used to control the opening and closing of circuit breakers (CB1, CB2) for protecting against fault conditions in at least one of the power input and power output portions of the power distribution system. In one embodiment, a temperature sensor probe (14) which is used to sense the temperature at a selected point of the substation supplies the temperature information to a microcontroller (12) which is programmed to set trip point of selected protective relays (51, 53, 55) as a function of the sensed temperature.</p> |
