Power control device and method

Abstract

A power control device comprises: a calculation means (101) for externally acquiring the electricity consumption and maximum electricity capacity of each system and a contract demand for an entire system and calculating the remaining electricity capacities of each system and the entire system; a detection means (102) for detecting, based on a necessary spare capacity indicating an estimated amount of the electricity consumption of a non-control device and the remaining electricity capacities, whether the necessary spare capacity is insufficient or not; a storage means (105) for storing a plurality of power control methods; a selection means (104) for, when detected that the necessary spare capacity is insufficient, selecting at least one power control method from the plurality of power control methods; and an execution means (105) for, until it is detected that the necessary spare capacity is not insufficient, executing at least one application of the power control methods and for, when the necessary spare capacity is secured, putting the at least one power control method on stand-by so that it is detected that the necessary spare capacity is not insufficient.

Description

technical field [0001] The present invention relates to an electric power control device and method for performing surplus capacity control to prevent power failure. Background technique [0002] There is a technique of selecting and interrupting a household electric appliance capable of interrupting operation when the power consumption exceeds a set power value. Based on the power consumption profile based on the operation program of each device, operation adjustment among devices is performed so as not to exceed the set electric power (for example, refer to Patent Document 1). [0003] Patent Document 1: JP-A-2002-369383 [0004] However, when there are home appliances that can be controlled by external means such as a network and home appliances that cannot be controlled by external means, the control of the home appliances that cannot be controlled by external means is rough, which impairs convenience. For example, the electrical system in the house is not sufficiently...

AI Technical Summary

Problems solved by technology

[0004] However, when there are home appliances that can be controlled by external means such as the network and home appliances that cannot be controlled by external means, the control of the home appliances that cannot be controlled by external means is rough, which impairs convenience.

For example, the electrical system in the house is not sufficiently protected against the connection of appliances (independent point loads) that consume large amounts of power in a short period of time, such as electric furnaces and / or dryers, although control via the network cannot generally be expected. hereinafter referred to as the capability of the system)

In particular, when there are many such loads, it is difficult to reduce the contracted power because the power supply capacity that must be reserved for such large power equipment is large because only their assumed total value is determined as a constant.

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