Pilot protection method for direct-current transmission line and application of pilot protection method
A technology for DC transmission line and longitudinal protection, applied in emergency protection circuit devices, electrical components, power transmission AC network, etc., can solve the problem of long delay of DC line backup protection action, and improve safety, stability, and action speed. Lifting, Criterion Simple Effects
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[0036] 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. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0037] The following embodiments take a typical bipolar direct current transmission system as an example for illustration, as figure 1As shown, a typical bipolar DC transmission system includes rectification side AC equivalent power supply 1, rectification side AC line 2, rectification side AC busbar 3, positive rectification side converter transformer 4, positive rectification side converter st...
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