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Boundary condition classification based multiple fault calculation method

A boundary condition, multiple fault technology, applied in computing, special data processing applications, instruments, etc., can solve the problems of the large amount of calculation of the phase component calculation method, the difficulty of network analysis and calculation technology, etc., and achieve the effect of easy computer implementation.

Inactive Publication Date: 2015-04-08
STATE GRID SHANDONG ELECTRIC POWER
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Problems solved by technology

Due to the coupling problem of element parameters in the phase coordinate space, the calculation amount of the phase component calculation method is relatively large, and the complex coupling relationship also makes the phase component method different from the single-phase network processing in the network processing, compared with the single-phase network. Analytical computing techniques are much more difficult

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  • Boundary condition classification based multiple fault calculation method
  • Boundary condition classification based multiple fault calculation method
  • Boundary condition classification based multiple fault calculation method

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Embodiment Construction

[0015] In order to clearly illustrate the technical features of the technical solutions of the present invention, the present invention will be described in detail below through specific implementation modes. At the same time, the function of the present invention is illustrated through preferred embodiments. It should be noted that the description of the embodiments is illustrative only, and is not intended to limit the scope and effects of the present invention.

[0016] Such as figure 1 As shown, what the present invention proposes is a kind of new method for computing multiple faults suitable for computer implementation, and the specific steps are as follows:

[0017] Step 1: Get information.

[0018] Obtain branch information and fault information, that is, branch impedance and voltage and current at the fault port, to form a three-sequence impedance matrix, form the three-sequence network equation of the fault port from the three-sequence impedance matrix, and form the...

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Abstract

The invention discloses a boundary condition classification based multiple fault calculation method, and relates to the technical field of power system fault analysis and calculation. The calculation method comprises the following steps: transforming and recombining original network equations; classifying boundary condition expressions to generalize five transformation rules; adopting the dynamic of the transformation rules to transform the network equations again in order to realize the united solution of complex faults under the condition of fault combination in different multiple numbers and different types. The calculation method is based on the idea of boundary condition classification, carries out classification on boundary conditions of multiple faults in arbitrary multiple numbers, summarizes the transformation rule of each classification of boundary conditions, carries out united transformation on various fault port network equations, solves the combination of various fault boundary conditions and the network equations, realizes unification of the solution process of the complex faults under the condition of fault combination in different multiple numbers and different types, and is easy for computer realization.

Description

technical field [0001] The invention relates to the technical field of power system fault analysis and calculation, in particular to a method for uniformly solving multiple faults with arbitrary multiples that is easy to be realized by a computer. Background technique [0002] During the operation of the power system, failures will inevitably occur. Although the probability of failure is very small and the duration is not long, the consequences are often very serious. With the development of the power system, the scale of the power grid is getting bigger and bigger, the structure is getting more and more complex, and the probability of multiple faults is greatly increased. The occurrence of multiple faults will cause the current to increase and the voltage to drop, which will endanger the equipment and make the equipment unable to operate normally; if it is serious, it will cause the power system to completely destroy the normal power supply of users, causing huge economic ...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 王军李玉峰田纪法路长禄
Owner STATE GRID SHANDONG ELECTRIC POWER
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