Method and dispatching system for preventing grid equipment from transmitting power with grounding points
A technology of power grid equipment and dispatching system, applied in the direction of measuring electricity, circuit devices, electrical components, etc., to achieve the effect of avoiding secondary impact
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Embodiment 1
[0033] This embodiment is a method for preventing power grid equipment from transmitting power with a grounding point, which is applied to such as figure 1 The dispatching system shown, the dispatching system includes: (1) measurement module, that is, the voltage signal detection terminals 41 and 42 fixedly connected to the grid equipment 10 in the figure; and the switch state connected to the switch units 21 and 22 of the grid equipment 10 Detection terminals 31, 32; (2) processing module, that is, the processor in the remote server 50 that outputs the power transmission enable signal 60 in the figure to perform the running task; (3) storage module, that is, the remote server 50 in the figure memory, disk or network storage drive for storing data in the end server 50. The remote server 50 is communicatively connected with the voltage signal detection terminals 41 , 42 and the switch signal detection terminals 31 , 32 . The grid device 10 is electrically connected to other gr...
Embodiment 2
[0043] This embodiment is a method for preventing grid equipment from transmitting power with a grounding point, and it is applied to a dispatching system. 32 and the voltage signal detection terminals 41, 42, the temperature, humidity and other environmental sensors arranged around the grid equipment 10, as well as the working state sensors of other grid equipment around the grid equipment 10, can also be used to obtain the factors that affect the electromagnetic field factors in the space around the grid equipment 10. Parameters, using these parameters to classify each first electrical connection state mark of the grid equipment 10, such as extracting the ambient temperature, ambient humidity, and ambient The voltage value and current value of the grid equipment with large radiated power divide the first electrical connection state with one electrical connection structure into multiple categories, so as to facilitate the detailed comparison between the first electrical connec...
specific Embodiment 1
[0053] Such as image 3 As shown, the power grid equipment in this specific embodiment is a loop line in a section of the same-tower double-circuit line of the 500kV distribution network, that is, the outage line is the line AB between the substation A and the substation B, and there is a same-tower line around it. Loop line CD, whether there is a grounding point on the outage line has a great influence on the induced voltage at both ends of the line. When the outage line has no grounding point, the induced voltage is mainly the capacitive voltage division of the live line on it, with a large amplitude and close phase angle; when there is a grounding point, the induced voltage is mainly the mutual inductance voltage of the live line on it, Amplitude is small.
[0054] Under normal circumstances, after the A side of the line AB substation is disconnected from the busbar, and the busbar of the B side of the substation is also disconnected, that is, after the line AB is out of s...
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