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Circuit Breaker Interrupter Stroke Curve Estimation

A travel curve, circuit breaker technology, applied in circuit breaker testing, circuits, instruments, etc., can solve problems such as huge production liability risks, online monitoring systems are not economically feasible, and production models are expensive.

Active Publication Date: 2017-02-22
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also it is more expensive for the current production model as the breaker needs to be specially built for travel sensor lifetime testing purposes and obviously cannot be sold afterwards
Also, for out-of-production models, the only samples are the circuit breakers that are still in service and subjecting these to a lifetime test is not a viable option
Therefore, designing an on-line monitoring system using stroke sensors is not economically feasible or poses a significant production liability risk

Method used

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  • Circuit Breaker Interrupter Stroke Curve Estimation
  • Circuit Breaker Interrupter Stroke Curve Estimation
  • Circuit Breaker Interrupter Stroke Curve Estimation

Examples

Experimental program
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Embodiment Construction

[0024] The following generally relates to on-line condition monitoring of connections to high-voltage circuit breakers, wherein the on-line condition monitor estimates one or more travel curves based on predicted or predetermined and recorded travel distances of circuit breaker contacts and sensed states of switches ( For example, continuous and differentiable, discontinuous, etc.), the switch is fixed to the contacts so as to open or close with opening and closing the contacts, or vice versa. In one example, this allows for the determination of various parameters, such as parameters indicative of the health of the circuit breaker, without the need to use contact travel sensors and / or measure contact movement during closing, opening, and / or other operations of the circuit breaker. actual travel distance.

[0025] figure 1 An example power network 100 is illustrated. Electricity network 100 includes a power generation portion 102, such as one or more power plants that generat...

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PUM

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Abstract

A system (112) comprising a memory (132) and a processor (224), the memory storing predetermined high voltage circuit breaker (106) contact travel distance information, the processor based on one or more of the stored travel distance information Both a plurality of travel distances and one or more time values ​​corresponding to a state transition of the switch between the closed and open states are estimated for at least one of closing, opening, or a combination of closing and opening operations of the contacts A travel curve in which the switch is secured to the contacts so as to transition between the closed and open states as the contacts move between the closed and open positions.

Description

technical field [0001] The following generally relates to determining a travel curve for circuit breaker interrupter contacts of a high voltage circuit breaker, and more particularly to estimating one or more travel curves while opening and / or closing via a contact travel sensor with or without measurement of the actual contact travel distance during operation of the circuit breaker. Background technique [0002] Condition-based maintenance of high-voltage circuit breakers has been achieved by integrating microprocessor-controlled on-line condition monitoring devices and sensors with high-voltage circuit breakers. Typically, the sensors / devices are configured to measure information used to calculate key parameters indicative of the health of the circuit breaker. One example of such a sensor is a contact travel sensor. This sensor is capable of tracking the position of the circuit breaker contacts as they shift from the open position to the closed position, and vice versa, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H11/00H01H1/00G01R31/327
CPCH01H1/0015H01H11/0062G01R31/3274
Inventor A·F·波尔特尔
Owner HITACHI ENERGY SWITZERLAND AG