Power monitor and control apparatus and control apparatus of distributed powering system

摘要

If a failure has occurred on the backbone-power-transmission-network side, i.e., the electric-power system, and if the power supply to a power-distributing/transforming substation is stopped, a power-distributing feeder is cut off from the electric-power system. Moreover, a monitor/control apparatus transmits a single-operation-permitting permission signal to a distributed power-source system which is connected to the cut-off power-distributing feeder. Here, the distributed power-source system supplies its power to the power-distributing feeder only during a time-interval in which the system is receiving the permission signal. A general load and an important load, which are connected to the power-distributing feeder, find it possible to continue their activities by taking advantage of this power.

主权项

1. A power monitor/control apparatus for monitoring and controlling an electric-power system, comprising:
an independent-operation judgment unit for detecting whether a power supply supplied from the electric-power system to a predetermined system section of a plurality of predetermined system sections of the electric-power system has stopped, and determining whether a permission signal should be transmitted to a distributed power-source system based on a presence or an absence of a flag stored in a memory that corresponds to said predetermined system section, said permission signal indicating that power supply from said distributed power-source system included within said predetermined system section is permitted to the predetermined system section of the electric-power system, and for sending a control signal to operate a switch that separates or connects said predetermined system section to said electric-power system; and a permission-signal transmission unit for transmitting said permission signal to said distributed power-source system, wherein said independent-operation judgment unit sends said permission signal to be transmitted from said permission-signal transmission unit to said distributed power-source system, if said independent-operation judgment unit determines that the permission signal should be transmitted after detecting a stop of said power supply to said predetermined system section from said electric-power system.