Nonlinear method for computing effective open and close times of breaker

A technology of breaking times and circuit breakers, applied in the field of numerical processing of primary equipment operation data, can solve problems such as failure to eliminate in time, loss of load, abnormal operation of circuit breakers, etc.

Inactive Publication Date: 2010-09-01
SHANGHAI SUNRISE POWER TECH
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Problems solved by technology

Since the effective breaking times of the circuit breaker cannot be calculated accurately, quickly, and in real time, the current maintenance of the circuit breaker usually adopts the regular maintenance method and the unscheduled maintenance method. The method of making hypothetical propositions and then excluding them one by one has the following ...

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  • Nonlinear method for computing effective open and close times of breaker
  • Nonlinear method for computing effective open and close times of breaker
  • Nonlinear method for computing effective open and close times of breaker

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Embodiment Construction

[0043] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and any similar structures and similar changes of the present invention should be included in the protection scope of the present invention.

[0044] Such as Figure 1-Figure 4 As shown, a method for calculating the effective breaking times of a circuit breaker based on nonlinearity provided by the embodiment of the present invention is characterized in that the specific steps are as follows:

[0045] 1) According to the protection starting current I of the circuit breaker a , Rated breaking current I ld , design life (calculated by day) L d , Time point T of the last inspection s , rated breaking times A t and maintenance interval T r Establish the parametric model of the circuit breaker;

[0046]2) Monitor the sequence of events (SOE) of the real-time operati...

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Abstract

The invention discloses a nonlinear method for computing open and close times of a breaker, which relates to the technical field of numerical processing of operating data of primary equipment in a power supply system and solves the technical problem of computing effective open and close times of a breaker. The method comprises the steps of: (1) building a parameter model of the breaker; (2) setting the operating state of the breaker into a fault state, a normally close state and a normally open state; (3) respectively building three state models according to the three operating states of the breaker; (4) matching the real-time operating state of the breaker to the corresponding state model for solving, and then carrying out weighting summation to get the effective open and close times of the breaker; (5) obtaining the current operating condition of the breaker according to the parameter model of the breaker and the effective open and close times of the breaker, which are obtained in the step (4), and making overhaul plane and overhaul time. The method can accurately and quickly compute the effective open and close times of the breaker in real time.

Description

technical field [0001] The technology of the numerical processing of primary equipment operation data of the power system involved in the present invention, in particular, relates to a method for calculating the effective breaking times of a circuit breaker based on nonlinearity in the power system. Background technique [0002] The circuit breaker plays an extremely important role in the control of the power system. The performance, action time, and breaking capacity of the circuit breaker will directly affect the safe operation of the actual power grid. In order to ensure that the circuit breaker always works in the best working state , [0003] The maintenance work of the circuit breaker has a great effect on ensuring the normal operation of the circuit breaker. Since the effective breaking times of the circuit breaker cannot be calculated accurately, quickly, and in real time, the current maintenance of the circuit breaker usually adopts the regular maintenance method a...

Claims

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Application Information

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IPC IPC(8): G01R31/327
Inventor 李昌陈毅夏湘洪
Owner SHANGHAI SUNRISE POWER TECH
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