Switchgear with bus-side voltage transformers or arresters
A technology of voltage transformers and switchgear, which is applied to the setting of switchgear, switchgear, electrical components, etc., can solve the problems of large material consumption and large space occupied by substations, and achieve easy operation, high degree of integration, and energy saving Effects of materials and floor space
Active Publication Date: 2018-03-02
ABB (SCHWEIZ) AG
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Problems solved by technology
[0006] Obviously, the solution of using the metering cabinet alone to realize the metering and protection of the main bus consumes a lot of materials and takes up a lot of space in the substation
Method used
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Embodiment Construction
[0036] Hereinafter, with reference to the drawings, a detailed description of alternative embodiments of the present invention is given.
[0037] image 3 Shown is the first preferred embodiment of the switchgear with bus-side voltage transformer or lightning arrester of the present invention, and the structure diagram of the switchgear with bus-side voltage transformer, feeder-side lightning arrester and feeder-side voltage transformer. Including busbar room 1000, circuit breaker room 2000, cable room 3000 and low voltage room 4000. Among them, the cable room 3000 is installed at the bottom, the bus bar room 1000 and the circuit breaker room 2000 are respectively installed on the frame of the cable room 3000, the circuit breaker room 2000 is placed on the bus bar room 1000, and the low voltage room 4000 is placed on the bus bar room 1000 and the circuit breaker. In the front of the chamber 2000, the parts are assembled in sequence, which is easy to operate.
[0038] The main feat...
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A switch apparatus having a voltage transformer or a lightning arrester on the busbar side. A busbar chamber having a voltage transformer on the busbar side comprises a set of feeder three-position switch system and a set of voltage transformer system having an isolating device. The feeder three-position switch system is used to implement power feed from the busbar side to the feeder side, isolation between the feeder side and the busbar side, and grounding of the feeder side. The voltage transformer system having the isolating device is used to monitor the busbar voltage and the insulating state, and provide a voltage circuit for apparatuses such as protection and automatic devices and instruments. A busbar chamber having a lightning arrester on the busbar side comprises a set of feeder three-position switch system and a set of lightning arrester system. The feeder three-position switch system is used to implement power feed from the busbar side to the feeder side, isolation between the feeder side and the busbar side, and grounding of the feeder side. The lightning arrester system on the busbar side can release energy of the thunder and lightning or can also release the overvoltage energy of the operation of a power system, protect the busbar from damages of transient overvoltage, and can block the following current without causing grounding short-circuit of the system.
Description
Technical field [0001] The invention belongs to the technical field of power products, in particular to the technical field of gas-insulated switchgear, and in particular to a gas-insulated switchgear with a bus-side voltage transformer or arrester. Background technique [0002] In the existing classic electrified railway substations, cabinet types such as standard feeders, line metering, bus sectioning, and bus joint are integrated. Standard incoming cabinet or feeder cabinet is the most basic cabinet type in substation, such as figure 1 Shown. Voltage transformers are required in the substation to measure and protect the lines. There is such a demand for the bus side and feeder side of the power supply line for line measurement and protection. In the existing classic substations, the metering and protection functions of the main bus are usually implemented separately with standard metering cabinets, such as figure 2 As shown; the metering function on the feeder side is genera...
Claims
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IPC IPC(8): H02B13/035
CPCH02B13/035H02B13/0356
Inventor 许丽明杨长洲杜北江阙银中
Owner ABB (SCHWEIZ) AG