Intelligent joint load shedding backup self-injection device
A technology for self-switching and load preparation, applied in circuit devices, emergency power supply arrangements, electrical components, etc., can solve the problems of interrupting the power supply of important users, consuming a lot of manpower and material resources, and social impact, achieving compact structure, ensuring safe and reliable operation, The effect of ensuring safety
Active Publication Date: 2015-12-02
STATE GRID CORP OF CHINA +2
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Problems solved by technology
Some substations with overload problems need to perform frequent manual switching operations according to the load size, which consumes a lot of manpower and material resources
At the same time, when the standby automatic switch is withdrawn, if a bus power failure occurs, the power supply of important users will be interrupted, causing a great social impact
Method used
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[0017] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0018] Such as figure 1 Shown: the existing first 110KV bus section 1 is connected to the primary side of the first main transformer T1, the secondary side of the first main transformer T1 is connected to the first 10KV bus section 3 through the first main transformer switch 1DL, and the second 110KV Bus section 2 is connected to the primary side of the second main transformer T2, the secondary side of the second main transformer T2 is connected to the second 10KV bus section 4 through the second main transformer switch 2DL, and the first 10KV bus section 3 is connected to the second 10KV bus section 4 Connect via segment connection switch 3DL. When in use, several outgoing lines are connected to the first 10KV bus section 3, figure 1 It is shown in the figure that the outgoing line L1, outgoing line L2, outgoing line L3, outgoing line L3 and outgoing line L5...
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The invention relates to a spare power automatic switching device, in particular to an intelligent intertripping load spare power automatic switching device, and belongs to the technical field of power system relay protection. According to the technical scheme, the intelligent intertripping load spare power automatic switching device comprises a first voltage transformer, a second voltage transformer, a first current transformer and a second current transformer, wherein the first voltage transformer is used for collecting the voltage of a first 10 KV bus section, the second voltage transformer is used for collecting the voltage of a second 10 KV bus section, the first current transformer is used for collecting the current of an outgoing line connected to the first 10 KV bus section, and the second current transformer is used for collecting the current of an outgoing line connected to the second 10 KV bus section; the first voltage transformer, the second voltage transformer, the first current transformer and the second current transformer are all connected with a load spare power automatic switching device body. The intelligent intertripping load spare power automatic switching device is compact in structure and convenient to operate, can collect transformer loads and outgoing line loads in real time, can guarantee the safe and reliable spare power automatic switching movement, and can guarantee continuous power supply and power supply safety of a user.
Description
technical field [0001] The invention relates to a standby automatic switching device, in particular to an intelligent connected load-shedding standby automatic switching device, which belongs to the technical field of electric power system relay protection. Background technique [0002] The existing standby automatic switching device can start when the bus voltage is lost, cut off the power switch of the de-energized bus after a delay, and close the backup power switch of the de-energized bus, so as to improve the power supply reliability of the power grid. [0003] Because the current standby automatic switching device does not have the function of judging whether there is an overload of the power supply transformer when the standby automatic switching is in action. As a result, some substations with overload problems need to perform frequent manual switching operations according to the size of the load, which consumes a lot of manpower and material resources. At the same ...
Claims
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IPC IPC(8): H02J9/06
Inventor 鲍有理严芬沈俊东周微平许小兵仲伟宽张宇
Owner STATE GRID CORP OF CHINA