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Automatic Acquisition of Circuit Breaker Operating Time for Controlled Switches

A circuit breaker and circuit technology, applied in circuits, electrical switches, electrical components, etc., can solve problems such as the lengthy debugging process of programs

Active Publication Date: 2015-12-23
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the described program has the disadvantage of a lengthy debugging process

Method used

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  • Automatic Acquisition of Circuit Breaker Operating Time for Controlled Switches
  • Automatic Acquisition of Circuit Breaker Operating Time for Controlled Switches

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Embodiment Construction

[0034] Overview:

[0035] For good synchronized switching performance, the point-on-wave controller needs to know the (mechanical) properties of the controlled circuit breaker device, especially the closing and opening times. Herein, methods and apparatus are disclosed for obtaining properties of a circuit breaker arrangement by means of a point-on-wave controller and a method for operating such a point-on-wave controller. A point-on-wave controller according to the invention determines properties of connected circuit breaker devices during testing and / or commissioning. For this, the primary contact of the CB is temporarily connected to the point-on-wave controller, and a mechanical switching operation is performed. The point-on-wave controller then measures the time required for switching operations, and optionally additional parameters such as driver temperature, and derives the required properties from these measurements. From them, it calculates an improved operating s...

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Abstract

For good synchronous switching performance, a point-on-wave controller (5) needs to know the (mechanical) properties of the controlled circuit breaker device (1), in particular the closing and opening times (tO, tC). Here, a method and a device for the acquisition of a plurality of properties of circuit breaker devices (1) by means of a point-on-wave controller (5) and a method for operating such a point-on-wave controller (5) are disclosed. A point-on-wave controller (5) according to the invention determines properties of a connected circuit breaker device (1) during testing / commissioning. For this, the CB' s primary contacts (3) are temporarily connected to the point-on-wave controller (5) and mechanical switching operations are performed. The point-on-wave controller (5) then measures the times required for switching operations, and optionally also extra parameters like drive temperature, and derives the demanded properties from these measurements. Therefrom, improved operation strategies for the CB (1) during live operation are calculated.

Description

technical field [0001] The present invention relates to methods and apparatus for obtaining properties of circuit breakers by means of point-on-wave controllers, and more particularly to methods and apparatus for obtaining circuit breaker properties by means of point-on-wave controllers in high voltage AC power transmission networks Properties of methods and apparatus. Background technique [0002] In many applications, switching transients can be significantly reduced by closing and opening circuit breakers (CBs) under point-on-wave (POW) control (also known as "synchronous switching" or "controlled switching"). In short, CB operation is delayed in such a way that contact touching / disengaging and / or starting / stopping current flow will occur at points of time well suited to the CB, the load of the switch and / or the network. This point in time is usually chosen as the specific phase angle of the reference voltage / current in the network monitored by the parameter interface of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H11/00H01H9/56
Inventor M.斯塔内克
Owner HITACHI ENERGY SWITZERLAND AG