초록 ▼

A plurality of monitoring devices are connected to respective pieces of switchyard equipment and associated with a common communications network. A remote host computer is connected to the network to bidirectionally communicate with each monitoring device. The communications network is the existing

A plurality of monitoring devices are connected to respective pieces of switchyard equipment and associated with a common communications network. A remote host computer is connected to the network to bidirectionally communicate with each monitoring device. The communications network is the existing power line used for delivering power and control signals to the switchyard equipment. Each monitoring device includes testing and/or monitoring circuitry for testing and/or monitoring one or more conditions of the piece of switchyard equipment and generating condition data therefrom, a storage device for storing the generated data, and a transmitter adapted to transmit the data to the remote location via the power line. The remote host computer receives the data transmitted to the remote location and stores the received data therein in a database format. The monitoring device can request previously sent data from the remote host computer. The monitoring includes an RS-232 port for accepting a local computer which conducts tests of the switchyard equipment, analyzes the results, compares the results with previous tests, and reprograms alarm parameters and baseline values associated with the switchyard equipment.

대표청구항 ▼

[ I claim:] [1.] A switchyard equipment monitoring system, the switchyard equipment receiving power and control signals from a remote location via a power line, the system comprising:(a) plurality of monitoring devices, each monitoring device connected to a piece of switchyard equipment, each monito

[ I claim:] [1.] A switchyard equipment monitoring system, the switchyard equipment receiving power and control signals from a remote location via a power line, the system comprising:(a) plurality of monitoring devices, each monitoring device connected to a piece of switchyard equipment, each monitoring device including,(i) testing and/or monitoring circuitry for testing and/or monitoring one or more conditions of the piece of switchyard equipment and generating condition data therefrom, wherein said circuitry accepts a plurality of analog and digital input signals from the switchyard equipment, at least one of the analog input signals being a response signal to an excitation or test signal sent from the monitoring device to the monitored piece of switchyard equipment,(ii) a storage device for storing the condition data, and(iii) a transmitter adapted to transmit the condition data to the remote location via the power line;(b) a communications node at the remote location, the node being connected to the power line; and(c) a remote host computer connected to the communications node for receiving the condition data transmitted to the remote location and storing the received condition data therein.