| 摘要 |
71707-7 A cogeneration system including a heat engine driving an electrical generator coupled to electrical lines at a site serviced by a utility. The system includes supervisory means for monitoring the electrical energy and power supplied by the generator, supplied to the site by the utility, and consumed by site electrical loads, for storing monitored electrical data, and for controlling operation of the engine and generator in response to the data. The system is further provided with data representative of the utility rate structure, a real-time clock, and controls operation of the system in accordance with time which corresponds to a utility peak, intermediate, or off-peak energy rate period. The system further comprises means for monitoring the thermal energy transferred from the engine to a site thermal load by heat exchange means. Further disclosed is circuitry for monitoring energy and power in electrical distribution lines and providing interlocking functions to multiply voltage and current representative signals, a voltage to frequency converter, and a gated counter for integrating by counting the converted frequency signal over time. Finally, a multiple-unit cogeneration system of the disclosed systems communicating over a local area network, with one unit designated as a "lead" unit at a given time is disclosed. A method is also disclosed for performing the various functions of the system. |
