Enhanced-robustness differential protection system and method for transmission line
A technology for differential protection and transmission lines, which is applied in the direction of automatic disconnection emergency protection devices, circuit devices, emergency protection circuit devices, etc., and can solve the problem of increasing out-of-area faults, reducing the reliability of differential protection, and differential protection misoperation and other problems to achieve the effect of improving the ability of anti-transition resistance
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[0029] The technical solutions and beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0030] like figure 1 As shown, the present invention provides a transmission line differential protection system with enhanced robustness, including the following functional modules:
[0031] The acquisition module is used to collect electrical quantities, mainly including the three-phase current and three-phase voltage on each side of the transmission line, and send them to the single-ended quantity protection module;
[0032] The single-ended quantity protection module is used to perform single-ended quantity protection calculations based on the electrical quantity data collected by the acquisition module, and judge whether there is a fault in the line. If a fault occurs, it is judged whether it is a fault in the forward direction or a fault in the reverse direction;
[0033] The differential adjustment module is u...
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