Method for determining relay protection device definite value by utilizing formula editor self-defined template

Abstract

The invention discloses a method for determining relay protection device definite value by utilizing a formula editor self-defined template. The method comprises a first step of editing additional information of a relay protection device definite value form, namely, automatically obtaining information used by a header and a tail through a formula editor definition method to generate a header table style and a tail table style of a relay protection device definite value form template, a second step of editing the relay protection device definite value form template, namely, editing the additional information and relay protection device definite value information to generate a definite value template, and a third step of defining various definite value item computing method rules of the relay protection device definite value form, and defining computational formulae of different types for different definite value items of the relay protection device definite value form by utilizing a formula editor. The formula editor technology combined with the edition of the relay protection device definite value template is utilized, the problems of complexity and non-determinacy of relay protection device definite value computing methods are solved, and developing period and maintaining period of a definite value calculation procedure of a relay protection device are greatly shortened.

Description

technical field [0001] The invention relates to a method for determining the fixed value of a relay protection device using a formula editor to customize a template. Background technique [0002] The relay protection device used in the power system is a kind of equipment that plays a vital role in the safety of the power grid, and the stable operation of the relay protection device requires an efficient and accurate method for determining the value of the relay protection device. Mis-setting of protection devices will make the coordination between the action behavior of power system relay protection and power system control system worse, and fundamentally affect the stability of power system. The relay protection devices operating in the power system are produced by different manufacturers, and the relay protection principles adopted by each other are not the same. The format of the relay protection device rating sheet is not uniform. The same type of fixed value items in t...

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Problems solved by technology

[0002] The relay protection device used in the power system is a kind of equipment that plays a vital role in the safety of the power grid, and the stable operation of the relay protection device requires an efficient and accurate method for determining the value of the relay protection device. Mis-setting of protection devices will make the coordination between the action behavior of the power system relay protection and the power system control system worse, and will fundamentally affect the stability of the power system

The relay protection devices operating in the power system are produced by different manufacturers, and the relay protection principles adopted by each other are not the same. The format of the relay protection device rating sheet is not uniform. The same type of fixed value items in the system are often calculated using different calculation formulas. Therefore, power system operators spend a lot of time and energy maintaining different types of relay protection device setting value sheet formats for different production plants and stations, and Compiling different calculation modules to complete the calculation of various relay protection device setting lists greatly affects the work efficiency of power system relay protection device setting calculations, and also increases the risk of incorrect setting of relay protection device settings

[0003] Most of the current methods to solve this problem are to develop and customize different calculation modules according to different types of relay protection devices, because it is necessary to repeatedly modify the corresponding calculation modules of different types of relay protection devices. This method will greatly affect power consumption. The efficiency and accuracy of the setting process of the system relay protection device will affect the stable operation of the relay protection device, especially for the new type of relay protection device, because the customization process of the calculation module is completely out of touch with the on-site operators of the power system Yes, the setting calculation specialists in the electric power department cannot visually inspect the algorithms and formulas used in the calculation module, which also greatly increases the possibility of errors in the formulas or algorithms in the calculation module, resulting in mis-setting of relay protection devices and affecting to the stable operation of the power system

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