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Programmable sectional type current control apparatus

A technology for programming segmented and segmented current, which is applied in the direction of control/regulation system, adjustment of electrical variables, instruments, etc., and can solve problems such as not being able to meet the special needs of customers

Inactive Publication Date: 2011-06-22
ANHUI ZHONGDIAN XINGFA & XINLONG TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even so, there is still the possibility that certain products cannot meet the special needs of customers

Method used

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  • Programmable sectional type current control apparatus
  • Programmable sectional type current control apparatus
  • Programmable sectional type current control apparatus

Examples

Experimental program
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Embodiment Construction

[0034] The device of a programmable segmental current controller provided in this embodiment includes: three current transformers with a transformation ratio of 5A / 0.35MA constitute the front end of the three-phase current signal acquisition module on the device; the above-mentioned current transformers The primary side is connected to an external current transformer reflecting the working current of the external electrical facility and having a transformation ratio of 1 / 5A through the terminal on the device; A / D interface connection; the device is equipped with 8 digital input interfaces to reflect the introduction of external physical quantity state signals; the interface circuit is connected to the input interface of the MCU after the input signal is isolated and transformed by the optocoupler device; the device panel is configured 8 LED signal indicators are used to indicate the state of some physical variables; the LED indicators are connected by the output interface of th...

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Abstract

The invention relates to a programmable sectional current control device and a programmable sectional current control method. The sectional current control device comprises a current signal input module, a switching value input interface module, a switching value output interface module, a memory module and a microprocessor MCU module, wherein the current signal input module is used for performing digitized sampling on three-phase analog current signals and calculating the real-time state of a group of sectional current signals through comparison; the switching value input interface module isused for reflecting introduction of external physical quantity status signals and connecting an input interface of an MCU; the switching value output interface module is used for realizing control ofa controller on the external physical quantity; the memory module is used for storing nonvolatile data such as device adjustable control parameters, user application programs and sectional current fixed value tables; and the microprocessor MCU module outputs a group of logical signals according to the real-time state of the input signals of the current signal input module and the predetermined logical control proposal, and implements control on a controlled electric facility through an output drive element.

Description

technical field [0001] The invention relates to the field of electric equipment current control, a programmable segmented current control device and a control method for the device. Background technique [0002] Segmented current control - when the electrical facility is running, according to the ratio PI of its dynamic current to the rated current, it can be quantitatively classified into several operating sections we are interested in; analyze the operating section of the operating current of the electrical facility, Its operating conditions can be evaluated and appropriate control strategies implemented. [0003] For example: according to the size of the working current of a certain equipment, the working section to be protected is defined as follows: [0004] I1S>(PI>110%); [0005] I2S>(PI>150%); [0006] I3S>(PI>200%). [0007] And formulate the following control strategies: [0008] 3 When working at I1S>, send out an alarm signal and start t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/12
Inventor 束龙胜张全有宛玉超
Owner ANHUI ZHONGDIAN XINGFA & XINLONG TECH CO LTD
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