64results about "Gas-insulated enclosed substations" patented technology

A converter building including at least one room having a solid room wall enclosing an interior space and an electrical active part contained in the interior space, the room wall having at least one opening, which is designed such that it allows a human to enter the interior space. The opening is sealable, the room wall encloses the interior space in a gas-tight manner when the opening is sealed, and the interior space contains a dielectric insulation medium including a dielectric insulation component other than air.

The invention relates to an insulation mode for a metal closed combined electrical appliance of a high-voltage substation. A high-voltage sleeve, a current mutual inductor, a voltage mutual inductor, an isolation-earthing switch, a breaker and an operation mechanism are connected to form a sealed body through a bus; different parts are separated into different air chambers by using an isolation insulating basin; and different gases are filled into different air chambers or the air chambers keep a vacuum state. The breaker and an isolation switch part in the combined electrical appliance adopt vacuum insulation, and other parts adopt an insulation mode by combining nitrogen or other inert gases. Therefore, the insulation mode saves the production cost, reduces the product cost, and solves the problem that when SF6 gas insulating totally-closed combined electrical appliance is carried out product inspection and repair, the gas is leaked because of incomplete gas recovering or poor product sealing to pollute atmosphere.

Single phase or polyphase switchgear having one or more switches which are mounted with the aid of solid insulation such that they are insulated, as well as associated live components such as rail systems, connectors and the like. Both the switches and the associated live components are housed in a housing enveloping the switches and live components. The enveloping housing is filled with air having a low moisture content and the interior space thereof is sealed with respect to the exterior space around the enveloping housing in such a way that the air present in the housing is not contaminated and will not reach the dew point.

A gas leak detection device includes a learning section, which has a correlation between a gas temperature inside gas pressure containers and a surface temperature of the gas pressure containers in a learning period corresponding to a current value flowing in the conductor, to make database, and a diagnosis section, which extracts a gas temperature corresponding to the measured current value and the surface temperature from the learning section in a diagnosis period, corrects a gas pressure value corresponding to an arbitrary surface temperature to a gas pressure value of a reference temperature using the extracted gas temperature, and detects a leak of the insulating gas based on the corrected gas pressure value.

Provided is a method for inhibiting high-frequency transduction interference in a GIS. An EMI filter is connected onto a line between the outlet side of a GIS transformer substation voltage transformer and a secondary device inlet and comprises two matching impedors, two common-mode capacitors, two differential-mode capacitors, a common-mode inductor and a differential-mode inductor. A series branch formed by the two matching impedors is connected to the LN line outlet end of the voltage transformer, and series connection points of the matching impedors are grounded. The differential-mode capacitors are connected in parallel and respectively connected between a phase line and a central line. The common-mode inductor and the differential-mode inductor are connected to a line between the differential-mode capacitors in series. The two common-mode capacitors are respectively connected between a phase line at the rear end of the differential-mode inductor and the ground and between the central line and the ground. By means of the method, high-frequency transduction interference produced by VFTO in a GIS transformer substation can be effectively filtered, and a rejection or maloperation phenomenon of a secondary device can be prevented.

The present disclosure relates to a gas insulated switchgear (GIS), and more particularly, a structure of a bus in a GIS. A structure of a three-phase integrated bus in a GIS, in a bus of a gas insulated switchgear comprising an enclosure, three phase conductors inserted in the enclosure, and spacers coupled to both sides of the enclosure to fix the three phase conductors, is characterized in that the three phase conductors are arranged in a shape of inverted triangle, wherein a conductor located at a lower side, of the three phase conductors, is formed in a shape of straight pipe, and has a branch bus upwardly extending from its middle portion, and wherein each of two conductors located at an upper end of the inverted triangle, of the three phase conductors, has both side portions formed in a shape of straight pipe and a middle portion outwardly curved.

The device for cutting is used to separate or connect two portions (2, 3) of an electrical circuit, which comprises a transformer with a winding (32), and the device for cutting is adapted to take an open position or a closed position. The device comprises at least a pair of electrical contacts (123, 121) with a movable contact (123) and a fixed contact (121), the transformer via an element of connection (33) is contacted with the fixed contact by an elastic installation; a telescopic guiding device (10) having a fixed portion (122) and a sliding movable portion (125), and the fixed portion (122) is fixed relative to the fixed contact (121), and the movable portion supports the movable contact (123); a control device (100) for maintaining the telescopic guiding device (10) in extension when the cutting device is in a closed position, or the for maintaining the telescopic guiding device in retraction when the cutting device is in an open position. The pair of electrical contacts (121, 123), the telescopic guiding device (10) and the control device form an independent sub-component, for being assembled onto the transformer mechanically by means of the fixed device (6).

The invention provides a box-type transformer station, and the transformer station comprises a low-voltage power distribution device which comprises a low-voltage power distribution cabinet; an intelligent monitoring unit which is disposed in the low-voltage power distribution cabinet, so as to collect the three-phase voltage and current of a power-on line of the low-voltage power distribution device and transmit the collected voltage and current information to the control terminal. The box-type transformer station provided by the invention solves a problem that a box-type transformer station in the prior art is poorer in reliability.

A transformer station can manage a great amount of high-voltage power lines (1) arriving at anyone side of the transformer station without occupying wide areas or big volume. A gas-insulated transformer station (10) comprises various compartments (12) for treating the electric power and a bus (14). The power can be normally transmitted to the compartments by an overhead conductor (2) and a closed wall outlet bushing (16). An emergency bus (24) is arranged on the gas-insulated transformer station (10), preferably on a roof (11) of a building, and the emergency bus is connected to various high-voltage power lines (1) by a wire perpendicular to the bushing (25). Therefore, any available compartment can be used as the emergency compartment, and a plurality of compartments of the gas-insulated transformer station (10) can be short-circuit.

The invention discloses a roof outgoing line structure of indoor GIS equipment. An existing power distribution device of a 220kV substation, mentioned in the prior art, employs GIS equipment, two outgoing lines share a bridging framework, the framework width is 24 meters, the framework is arranged in a site of the power distribution device and is limited by the site, no enough site of the substation is used for achieving outgoing line scale in planning, so that the scale of the substation is limited, and the development of a power grid is limited. According to the technical scheme, the roof outgoing line structure of the indoor GIS equipment comprises an h-shaped outgoing line framework and roof outgoing line indoor GIS equipment, the h-shaped outgoing line framework comprises an upper-layer outgoing line cross arm, an intermediate-layer outgoing line cross arm, a lower-layer outgoing line cross arm, a first steel pipe rod, a second steel pie rod and a support horizontal rod, the roofoutgoing line indoor GIS equipment comprises the GIS equipment and a sleeve, the GIS equipment is arranged on indoor ground, and the sleeve is connected to an overhead outgoing line on a roof via an air pipe.

Vertical type tank 1, in which vertical type interrupters 2 for three phases are arranged, has current transformer units 10 and 20. Main sections of current transformer 12 and 22 for three phases are respectively arranged in current transformer units 10 and 20 so that the lines connecting their centers form triangle. Current-carrying conductors 3 and 4 connected to vertical type interrupter 2 are made to pass through main section 12 and 22, respectively. Each of current-carrying conductors 3 and 4 is connected to first and second conductor members 31, 41 and 32, 42, which pass through the main section and connected severally and respectively by connection conductor members 33, 34, and 43, so that the current path on the primary of the current transformer form a two-turn winding. Connection conductor members 33, 34 and 43 of each phase are arranged in the space between main section 12 and 22.

The present invention relates to an interlock device of a ring main unit, and more particularly, to an interlock device of a ring main unit in which a fuse cover can be closed in interlock with a cable cover.

An interlock device of a ring main unit according to an embodiment of the present disclosure may include an interlock frame provided in part of the ring main unit, a cam on part of which an engaging portion is protruded and formed and on the other part of which a slit is formed, rotatably provided within the interlock frame, an operating plate an end of which is coupled to the slit to perform a vertical movement, and a spring an end of which is fixed to part of the cam to store an elastic force due to the movement of the cam.

The invention discloses a novel vehicle-mounted GIS substation and an installation method thereof, The vehicle-mounted GIS substation comprises a vehicle body, a chassis and a GIS substation main bodyequipment, wherein the GIS substation main body equipment is arranged on the vehicle body at a plurality of spacing laterally, and comprises a bus bar three-station switch, a circuit breaker, a current transformer, a three-station switch, a fast grounding switch and a lightning arrester. The busbar three-station switch adopts a mechanism lower structure and is connected with a circuit breaker. The three-station switch is connected with the circuit breaker through the current transformer. A quick ground switch is mounted on the three-station switch, A lightning arrestor is connected with a three-station switch through a connecting bus, and the lightning arrester is directly installed on the chassis through bolt pillars, and is connected with the chassis together with the circuit breaker, the structure is compact and reasonable, the modular assembly and transportation can meet the requirements of the basic highway transportation, can be adjusted according to the actual situation of thepower station, the construction cost of the station is low, the efficiency is high, and the requirement of the vehicle-mounted substation for the power network construction is met.

The invention discloses a device for connecting a GIS and a transformer, which comprises three single-phase cylinders and an oil-gas sleeve. The end part of each single-phase cylinder is fixedly connected with a corrugated pipe, the oil-gas sleeve is integrally and horizontally arranged, one end of the oil-gas sleeve is connected with the transformer, and the other end of the oil-gas sleeve extends into the single-phase cylinder through the corrugated pipe. A first flange is arranged on the outer side of the oil-gas sleeve, one side of the first flange is fixed to the transformer, and the other side of the first flange is fixedly connected with the corrugated pipe. A main conductor and a connecting conductor are arranged in the single-phase cylinder, one end of the main conductor is installed at the end of the single-phase cylinder, the other end of the main conductor is connected with the connecting conductor through a flexible connecting piece, a connector base is installed on the connecting conductor, and the end of a live conductor in the oil-gas sleeve is inserted into the connector base and electrically connected with the connecting conductor. According to the oil-gas sleeve horizontal outgoing line, the oil-gas sleeve and the main conductor are connected through flexible connection, so that vibration transmitted to a GIS from a transformer is weakened, fatigue damage of the oil-gas sleeve is effectively avoided, and the service life of the oil-gas sleeve is prolonged.

The invention relates to an intelligent fireproof door with a monitoring function. The intelligent fireproof door comprises a fireproof door body, an SF6 gas detector, a hydrogen sulfide detection sensor, a carbon monoxide sensor and a combustible gas sensor, wherein the fireproof door body is arranged on a monitoring area and used for sealing the monitoring area, and the SF6 gas detector, the hydrogen sulfide detection sensor, the carbon monoxide sensor and the combustible gas sensor are arranged on the fireproof door body. An opening and closing device used for controlling the fireproof door body to be opened or closed is arranged on the fireproof door body, and the opening and closing device is electrically connected with the SF6 gas detector and the sensor. When any one of SF6 gas, hydrogen sulfide, carbon monoxide, combustible gas, oxygen content, temperature and humidity in the monitoring area is unqualified, the controller controls the opening and closing device to be closed, the fan is started to exhaust air, and meanwhile the controller starts the audible and visual alarm to give an alarm. When a certain content in the equipment room is detected to be unqualified, the fireproof door is automatically locked, field operation personnel cannot enter the equipment room, and accidents are prevented.