The main function of the fault analysis module has two parts: one is to calculate the corresponding sequence component, phase component, famous value, unit value, short-circuit current of each branch when various faults (including three-phase symmetrical short-circuit, single-phase grounding short-circuit, two-phase-to-phase short-circuit, two-phase grounding short-circuit) occur at each equipment port of the generator transformer unit Second, the internal fault of the generator is simulated and analyzed to get the current and voltage parameters of the specific parts of the generator when the internal fault occurs. As the basis of setting calculation module and sensitivity verification module, the module is implemented on the basis of graphic modeling module. It can make use of the generated main electrical wiring diagram, after the user selects the operation mode, fault point and fault type, formulate the network topology diagram of each sequence, establish the corresponding short circuit impedance matrix of each sequence, calculate the short circuit fault, and then save the calculation results in the form of table in the database for users to view directly or call by other modules. The flow chart of fault analysis module is shown in Figure 5-2.This module provides the setting work for the protection configured by the generator transformer unit, and is the core component of the whole setting software. Its main function is to complete the setting work of generator protection, transformer protection and generator transformer unit protection by combining relevant regulations, the device instructions of various protection equipment manufacturers and the experience of setting staff. The specific functions are as follows:Setting basis: large generator transformer unit setting calculation guide, other relevant industry guidelines, device setting instructions of corresponding protection equipment manufacturers, and combined with the specific working experience of power station operators.Setting task: complete the relay protection setting of generator protection, transformer protection, generator transformer protection, excitation transformer protection and other equipment.The characteristics of the tuning module are as follows: (1) users participate in the whole process of setting to improve the practicability of the setting results. When setting, the system can automatically calculate the setting after obtaining the equipment parameters and protection configuration, and guide the user to input the corresponding empirical parameters, and give the corresponding prompts and instructions (such as: the corresponding setting formula and principle, the commonly used value range, and the protection setting value recognized by the regulations). Users can choose according to their own experience or directly use the calculation Default value obtained. (2) The user-defined setting module is added to improve the scalability of the system. Since the software design only considers the common protection devices of current mainstream equipment manufacturers, the development of relay protection technology is changing with each passing day, all kinds of new protection principles and methods and new protection equipment may appear at any time, which may lead to the software unable to be applied. Therefore, a user-defined module is specially set up, which can define the equipment definition according to the special needs of users Value items, setting principles or formulas are flexible. (3) The module directly faces the device, establishes a unified interface function and data structure, further modularizes the setting calculation of each different device, and directly combines each sub module during setting.
The main function of the fault analysis module has two parts: one is to calculate the corresponding sequence component, phase component, famous value, unit value, short-circuit current of each branch when various faults (including three-phase symmetrical short-circuit, single-phase grounding short-circuit, two-phase-to-phase short-circuit, two-phase grounding short-circuit) occur at each equipment port of the generator transformer unit Second, the internal fault of the generator is simulated and analyzed to get the current and voltage parameters of the specific parts of the generator when the internal fault occurs. As the basis of setting calculation module and sensitivity verification module, the module is implemented on the basis of graphic modeling module. It can make use of the generated main electrical wiring diagram, after the user selects the operation mode, fault point and fault type, formulate the network topology diagram of each sequence, establish the corresponding short circuit impedance matrix of each sequence, calculate the short circuit fault, and then save the calculation results in the form of table in the database for users to view directly or call by other modules. The flow chart of fault analysis module is shown in Figure 5-2.This module provides the setting work for the protection configured by the generator transformer unit, and is the core component of the whole setting software. Its main function is to complete the setting work of generator protection, transformer protection and generator transformer unit protection by combining relevant regulations, the device instructions of various protection equipment manufacturers and the experience of setting staff. The specific functions are as follows:Setting basis: large generator transformer unit setting calculation guide, other relevant industry guidelines, device setting instructions of corresponding protection equipment manufacturers, and combined with the specific working experience of power station operators.Setting task: complete the relay protection setting of generator protection, transformer protection, generator transformer protection, excitation transformer protection and other equipment.The characteristics of the tuning module are as follows: (1) users participate in the whole process of setting to improve the practicability of the setting results. When setting, the system can automatically calculate the setting after obtaining the equipment parameters and protection configuration, and guide the user to input the corresponding empirical parameters, and give the corresponding prompts and instructions (such as: the corresponding setting formula and principle, the commonly used value range, and the protection setting value recognized by the regulations). Users can choose according to their own experience or directly use the calculation Default value obtained. (2) The user-defined setting module is added to improve the scalability of the system. Since the software design only considers the common protection devices of current mainstream equipment manufacturers, the development of relay protection technology is changing with each passing day, all kinds of new protection principles and methods and new protection equipment may appear at any time, which may lead to the software unable to be applied. Therefore, a user-defined module is specially set up, which can define the equipment definition according to the special needs of users Value items, setting principles or formulas are flexible. (3) The module directly faces the device, establishes a unified interface function and data structure, further modularizes the setting calculation of each different device, and directly combines each sub module during setting.<br>
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