Modeling method of power grid system protection control strategy in online analysis
A power grid system, protection and control technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve the problems of time-consuming and laborious maintenance, lengthy and error-prone strategy logic scripts, etc., and achieve the effect of easy reading
Active Publication Date: 2021-03-02
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology
Engineers compiled the function policy table of the frequency emergency coordination control system of the East China Power Grid. Due to the limitation of the security control policy description language, the policy logic script was long and error-prone, and maintenance was time-consuming and laborious.
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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0047] The invention takes the East China frequency coordinated control strategy as an example, and describes a series of modeling methods such as induction, classification, model definition, and logic formation of the power grid system protection strategy model.
[0048] (1) Four classification elements of power grid system protection: fault, operation mode, power flow level, control measures and control quantity, classification and definition method of the four elements of protection.
[0049] The power grid system protection modeling is to generalize the description of the cross-region security ...
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The invention discloses a method for modeling a protection control strategy of a power grid system in an online analysis, comprising the following steps: according to the search process of the security control strategy, combined with the security control strategy of the regional power grid, extract four basic elements from the power grid system: fault, Power grid operation mode, power flow level, control measures and control quantities of power grid system protection devices; faults are defined by the combination of function keywords and enumeration data types; defined by the combination of function keywords and power grid equipment names Power grid operation mode; use the power flow calculation keyword function and equipment name to define the power flow level of the power grid; use the three elements of control keyword, equipment name and control quantity to form the control measures and control quantities of the power grid system protection device in the power grid system protection model; A basic element is used for logic configuration. The logic configuration uses the logic calculation symbols and logic judgment symbols in C language for logic configuration to form strategies and model.
Description
technical field [0001] The invention relates to the field of power grid fault processing and system protection dynamic control, in particular to establishing a simulation model for the function strategy table of the East China power grid frequency emergency coordination control system by using the power system safety control description language. Background technique [0002] In recent years, with Fufeng, Jinsu, Binjin, and Lingshao UHVDCs successively put into production, the largest single external DC incoming power of East China Power Grid and the total external DC incoming power have continued to grow, and high-power DC has lost its influence on grid frequency stability. impact is becoming more pronounced. The calculation shows that during the light load period of the flood season, restricted by the frequency stability level, in order to avoid the loss of single-circuit UHV DC high-power bipolar, resulting in the first round of low-cycle load reduction of the system, the...
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IPC IPC(8): H02J3/00G06F30/20
CPCG06F30/367H02J3/00H02J2203/20Y02E60/00
Inventor 解梅丁平于之虹史东宇严剑峰刘芳戴红阳胡建勇高波
Owner CHINA ELECTRIC POWER RES INST