Compact circuit breaker for gas-insulated switchgear
阅读说明:本技术 用于气体绝缘开关设备的紧凑式断路器 (Compact circuit breaker for gas-insulated switchgear ) 是由 L·特赖尔 于 2019-03-07 设计创作,主要内容包括:本发明涉及一种用于中压和高压范围内的气体绝缘开关设备(GIS)的断路器壳体,其特征在于,它包括允许多个公共点布置的至少四个凸缘,使得来自不同开关设备装置的导体可直接连接到断路器。(The invention relates to a circuit breaker housing for Gas Insulated Switchgear (GIS) in the medium and high voltage range, characterized in that it comprises at least four flanges allowing a plurality of common points to be arranged so that conductors from different switchgear devices can be directly connected to the circuit breaker.)
1. A circuit breaker housing (10) for Gas Insulated Switchgear (GIS) in medium and high voltage range, the circuit breaker housing (10) comprising at least four flanges (13, 14, 16, 17) allowing multiple common point arrangements (40, 54) such that conductors from different switchgear devices can be directly connected to a circuit breaker mounted within the housing (10).
2. Circuit breaker housing (10) according to claim 1, characterized in that two pairs of identical flanges (13, 14) and (16, 17) are arranged diametrically opposite on each side of the housing (10).
3. A circuit breaker comprising a circuit breaker housing (10) according to claim 1 or 2 and further comprising a first interruption chamber (30) with two electrical connection points (34, 36), a second interruption chamber (32) with one electrical connection point (38), a common point (40) connecting the first interruption chamber (30) to one of the electrical connection points (36) of the first interruption chamber (30) simultaneously and a fourth electrical connection point (42), the fourth electrical connection point (42) connecting the first interruption chamber (30) to another switchgear element.
4. A circuit breaker comprising a circuit breaker housing (10) according to claim 1 or 2 and further comprising a first interruption chamber (30) with one electrical connection point (50), a second interruption chamber (32) with one electrical connection point (52), a common point (40) connecting the first interruption chamber (30) to both the electrical connection point (50) of the first interruption chamber (30) and a fourth electrical connection point (42), the fourth electrical connection point (42) connecting the first interruption chamber (30) to another switchgear element.
5. The circuit breaker according to claim 2, characterized in that at least one voltage transformer (60), at least one cable interface (62) and at least one earthing-prevention switch (64) are directly connected to the first interruption chamber (30), and at least one disconnector earthing switch (66) is directly connected to the second interruption chamber (32).
Technical Field
The invention relates to a compact circuit breaker for Gas Insulated Switchgear (GIS) in the medium and high voltage range.
More particularly, the present invention relates to a circuit breaker housing for a gas insulated switchgear.
Background
In a GIS (gas insulated switchgear), a circuit breaker as a main part of a rack is capable of interrupting power between a bus bar and a feeder. In recent designs, the circuit breaker housing has a vertical orientation and has not more than three flanges for mounting switchgear devices (e.g. earthing switches, busbars, current or voltage transformers) in order to connect them to different connection points of the interrupting chamber by means of so-called common point conductors. The connection of three or more switchgear devices is called a common point. In the field of wind energy with 72.5kV GIS, the market is growing. The complete module has to be integrated into the tower. However, since the inner diameter is about 6.0m in general, the space is limited.
Moreover, as illustrated by fig. 1 (which represents a typical configuration of a current circuit breaker), an additional external casing 2 must be assembled to the circuit breaker in order to connect three or more switchgear devices to the
It is possible that each of the same circuit breakers would have one common point with three connections or even two common points with two connections would facilitate a more intelligent and cost effective modular construction. Such a configuration. Existing circuit breaker designs do not allow for such a configuration.
To overcome the above drawbacks, the present invention proposes a compact GIS module for industrial or wind park applications, which is cost-effective, which reduces the amount and weight of insulating gas.
Disclosure of Invention
To achieve this object, the invention proposes a circuit breaker housing for a Gas Insulated Switchgear (GIS) in the medium and high voltage range, comprising at least four flanges allowing a plurality of common points to be arranged so that conductors from different switchgear devices can be directly connected to the circuit breaker.
According to the invention, the circuit breaker housing comprises two pairs of identical flanges arranged diametrically opposite on each side of the housing.
According to another aspect of the invention, the circuit breaker housing comprises at least two common point connections symmetrically arranged on each side of the interrupting chamber.
In a preferred embodiment of the invention, the at least one disconnector (disconnector) earthing switch, the at least one anti-earthing switch, the at least one cable interface and the at least one voltage transformer are assembled directly with the circuit breaker.
Advantageously, the circuit breaker according to the invention has an oval housing with a thin breaking chamber, a new fixed support for the breaking chamber and new connection points on both sides of the breaking chamber.
Drawings
Further characteristics and advantages of the invention will emerge from the following description, taken as a non-limiting example with reference to the following figures, in which:
figure 1 is a schematic view of a circuit breaker according to the prior art;
figure 2 represents a first embodiment of the circuit breaker according to the invention;
figure 3 represents a third embodiment of the circuit breaker according to the invention;
figure 4 shows an example of a circuit breaker according to the invention.
Detailed Description
In the remainder of this description, like reference numerals will refer to like elements in different embodiments of the invention.
Fig. 2 shows a first embodiment of a
Fig. 3 shows a second embodiment of the
Fig. 4 shows an embodiment of a
Thanks to the proposed configuration of the invention, it is possible to have a common point connection for connecting up to three flanges to the same connection point of the interruption chamber, allowing to build new GIS arrangements. The footprint requirements of all devices assembled directly to the circuit breaker are relatively small, which results in a compact layout.
The new possible GIS module is cost effective, with a smaller footprint, reduced weight and reduced amount of insulating gas.
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