JPH0214242U

JPH0214242U -

Info

Publication number: JPH0214242U
Application number: JP8979488U
Authority: JP
Priority date: 1988-07-06
Filing date: 1988-07-06
Publication date: 1990-01-29

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示すデマンドコ
ントロール装置の構成ブロツク図、第２図は従来
のデマンドコントロール装置の構成ブロツク図、
第３図は時間・電力量特性曲線を示す図である。図において、１はデマンドコントロール装置、
３は発信装置付電力量計、４は合成変成比設定器
、５はパルス定数設定器、８はサンプリング値カ
ウンタ、１０は残時間時計回路、１５は目標値設
定器、３０は入力パルス数カウンタ、３１はパル
ス数変換回路、Ｗ_１は現在値、△ｗ／△ｔはサン
プリング値、Ｔはデマンド時限、ｔは現在時刻で
ある。なお、各図中、同一符号は同一または相当
部分を示す。 FIG. 1 is a block diagram of the configuration of a demand control device showing an embodiment of this invention, FIG. 2 is a block diagram of the configuration of a conventional demand control device,
FIG. 3 is a diagram showing a time/power amount characteristic curve. In the figure, 1 is a demand control device;
3 is a power meter with transmitter, 4 is a composite transformation ratio setter, 5 is a pulse constant setter, 8 is a sampling value counter, 10 is a remaining time clock circuit, 15 is a target value setter, 30 is an input pulse number counter , 31 is a pulse number conversion circuit, _W1 is a current value, Δw/Δt is a sampling value, T is a demand time period, and t is a current time. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

An input pulse number counter that counts pulses from a watt-hour meter with a transmitting device for each demand time period, and based on the pulse count value of this input pulse number counter, a synthetic transformation ratio with the instrument current transformer of the instrument transformer and the transmission. The current value of the amount of electricity used at the current time within the demand time period from the pulse constant setting value of the power meter with the device (the above pulse count value) × (synthetic transformation ratio ÷ pulse constant)
A pulse number conversion circuit that calculates the amount of electricity used at the current time, a sampling value counter that measures the sampling value per unit time of the amount of electricity used at the current time, a remaining time clock circuit that indicates the remaining time of the demand time period, and a number of pulses that calculates the amount of electricity used at the end of the demand time period. The present invention is characterized by comprising a target value setter for setting a target, and an arithmetic circuit that predicts the amount of power used at the end of the demand based on the current value, the sampled value, and the remaining time, and compares the predicted value with the target value. demand control device.