JPH04127807A - Mobile substation facility - Google Patents

Abstract

PURPOSE:To improve moving performance by mounting a tank containing a breaking unit of a breaker together with insulating medium perpendicularly to the floor of a mobile vehicle, and connecting it to a power source and a transformer through a lead-in bushing and a flange. CONSTITUTION:Relative units such as a breaker 13 for forming a power receiving switching unit 15, a lead-in bushing 11, an arrester 14, an operation box 22, an operating mechanism 23, a transformer 17, a secondary power distribution switching unit 18, a control board 43, etc., are placed in a load carrier 41 of a mobile vehicle 41. The breaker 13 is composed of a breaking unit 13a, and insulating medium contained in a cylindrical tank 21, and the tank 21 is vertically stood on a floor 41a. The breaker 13 is connected to the bushing 11 through a current transformer 12, and connected to the primary side of the transformer 17 through a flange 16. Thus, a substation apparatus is efficiently transferred to a site without subjected to a vehicle control regulation.

Description

[Detailed description of the invention] A. Industrial application field The present invention provides a transformer installed on a moving vehicle such as a trailer.

This relates to mobile substation equipment loaded with substation equipment such as power receiving switchgear.

B0 Summary of the invention The present invention is a mobile substation equipment in which substation equipment such as a transformer and a power receiving switch can be loaded onto a moving vehicle and transported to a desired location, in which the power receiving switchgear is equipped with a bowed bushing. By constructing only a circuit breaker and integrally connecting the power receiving switchgear to the transformer and loading it on the moving vehicle, it is possible to load the transformer equipment for one power receiving line on one moving vehicle. This is what I did.

C0 Conventional technology Mobile substation equipment was developed for the purpose of responding to accidents at substations and as emergency measures such as temporary power sources. In order to increase mobility in an emergency, this type of mobile substation equipment is installed on a moving vehicle such as a truck or trailer, which is not subject to the restrictions stipulated in the Vehicle Restriction Ordinance, when driving. It is desirable to carry a complete set of substation equipment such as:

The switchgear of conventional mobile substation equipment has almost the same equipment as the switchgear of permanent substations, but its configuration takes into consideration the ease of inspection and maintenance of the nine uninterrupted equipment in the substation. This mobile substation equipment, as shown in the single line diagram in Figure 5,
Retraction bushing 51, current transformer 52. Power receiving side disconnector 5
3. Circuit breaker 54, load side disconnector 55. Lightning arrester 56. Earthing switches 57-59. The bushing 60 constitutes a power receiving switchgear, the bushing 60 of the power receiving switchgear and the bushing 62 of the transformer 61 are connected by a cable 63, and the bushing 64 of the transformer 61 and the bushing 66 of the secondary power distribution switchgear 65 are connected. The configuration is such that a cable 67 is used to connect between the two.

The power receiving switchgear described above includes a power receiving side disconnector 53. in a tank filled with an insulating medium such as SF6 gas. Circuit breaker 54. Load side disconnector 55. The earthing switches 57 to 59 are housed in order to reduce the size and weight of the entire device.

However, this power receiving switchgear has a large number of storage devices, so there is a limit to how much it can be reduced in external dimensions and weight. 3.5m.

It was not possible to keep the weight within the 20 ton regulation. Therefore, a method has been adopted in which the power receiving switchgear and the transformer are separated and loaded onto multiple trucks, and the devices are connected on-site using cables or the like.

D0 Problems to be Solved by the Invention Conventional mobile substation equipment has almost the same equipment as a permanent substation, so the configuration is extremely complex, making it difficult to reduce the external dimensions and weight of the entire device. It was difficult.

Therefore, it is necessary to divide and load the switchgear and substation equipment such as transformers into two or more moving vehicles.

In this way, dividing and loading substation equipment onto multiple moving vehicles requires a large installation area (parking space), which may restrict its use depending on the local parking space, and also Since equipment loaded on a moving vehicle must be connected with cables, there is a problem in that the ability to quickly assemble and disassemble the equipment, which is an original feature of mobile substation equipment, is significantly impaired. Moreover, if the number of trolleys increases, it will be economically disadvantageous because it will cost a lot to secure drivers and maintain the vehicles.

The present invention was made in view of the above-mentioned problems, and its purpose is to provide a mobile substation equipment that can carry all substation equipment as a complete set without being subject to regulations stipulated by the Vehicle Restriction Ordinance. do.

Means for Solving Problem E1 In order to achieve the above object, the mobile substation device of the present invention has the following features:
In a mobile substation device in which substation equipment such as a transformer and a power receiving switchgear are loaded on a moving vehicle, the interrupting part of the circuit breaker is housed in a tank together with an insulating medium, and this tank is placed against the floor of the moving vehicle. The power receiving switchgear is arranged vertically, and the tank is provided with a lead-in bushing and a flange connection part to constitute the power receiving switchgear, and the power receiving switchgear is integrally connected to the transformer and loaded on the moving vehicle. do.

In the case of F0-operating mobile substation equipment, inspection and maintenance can be carried out while on standby or before charging.

Therefore, if the power receiving point has an aerial bushing lead-in structure, it will be easier to ground the power receiving point, and it can be disconnected from the power transmission line by removing the jumper wire connected to the bushing terminal. Disconnectors and earthing switches can be omitted. Furthermore, by turning off the circuit breaker of the distribution switchgear connected to the transformer secondary side, the cable connected to the transformer secondary side terminal can be disconnected.
The earthing switch can be omitted.

In this way, if we consider the operational form of mobile substation equipment,
It is possible to omit the power receiving earthing switch, power receiving side new circuit switch, earthing switch, load side new circuit switch, and earthing switch, and configure the power receiving switchgear only with a circuit breaker equipped with a retractable bushing. It is possible to reduce the external dimensions and weight of the opening/closing device.

G. Example Hereinafter, the present invention will be explained based on an example shown in FIGS. 1 to 4.

Fig. 1 is a circuit configuration diagram showing one embodiment of the present invention, Figs. 2 and 3 are side and front views showing a power receiving switchgear which is the main part of the embodiment, and Fig. 4 is the embodiment. FIG. 2 is a side view showing a schematic configuration of mobile substation equipment to which the above is applied.

As shown in the single line diagram of FIG. 1, the mobile substation equipment of the present invention has a retractable bushing 11. Current transformer 12° circuit breaker 13.
The lightning arrester 14 constitutes a power receiving switchgear 15, a transformer 17 is connected to the power receiving switchgear 15 via a transformer connection flange connection part 16, and a bushing 17 is connected to the transformer 17.
The secondary power distribution switchgear 18 is connected via a and 18a.

As shown in FIGS. 2 and 3, the power receiving switchgear 15 according to the present invention houses the interrupting part 13a of the circuit breaker 13 in a cylindrical tank 21 filled with an insulating medium such as SF6 gas, and the lower part of the tank 21 The drawing bushing 11 with the current transformer 12 on the side is installed diagonally, and the tank 21
An air-insulated lightning arrester 14 is installed horizontally on the top of the lead-in bushing 11 and connected to the lead-in bushing 11, and a flange connection part 16 of the busbar conduit connected to the transformer 14 is provided on the upper side opposite to the lead-in bushing 11. Can be configured.

The three-phase power receiving switchgear 15u configured in this way,
15v and 15w are arranged vertically at a predetermined interval on an operation box 22 in which an operation connecting link part is housed, as shown in FIG. 3, and an operation mechanism 23 is attached to the side of the operation box 22. There is.

That is, in the case of the power receiving switchgear 15 according to the present invention, the power receiving point is constructed with an aerial bushing retracting structure, taking into account the operation mode of mobile substation equipment where inspection and maintenance are carried out on standby or before charging. In addition to making grounding easier, it can be disconnected from the power transmission line by removing the jumper wire connected to the bushing terminal, so the power receiving ground switch, power receiving side disconnector, and ground switch can be omitted. . Furthermore, by turning off the circuit breaker of the distribution switchgear connected to the secondary side of the transformer, the cable connected to the terminal of the transformer secondary side can be disconnected. can be omitted.

Therefore, the power receiving switchgear 15 according to the present invention can be configured as a power receiving grounding switch, a power receiving side disconnector, and a grounding switch by considering the operating form of the mobile substation equipment.

Since the load-side disconnector and the earthing switch can be omitted and the circuit breaker 13 equipped with the retractable bushing 11 can be used, the external dimensions and weight can be reduced compared to the conventional power receiving switchgear of mobile substation equipment. This can be reduced. This has made it possible to integrate the power receiving switchgear 15 and the transformer 17 and load them onto one moving vehicle.

Next, FIG. 4 shows mobile substation equipment to which the power receiving switchgear 15 according to the present invention is applied. In this embodiment, power receiving switchgear 15. Transformer 17, transformer cooler 42. A mobile substation equipment was constructed by loading the secondary power distribution switchgear 18 and the control panel 43. In this case, the secondary side of the transformer and the power receiving switchgear for secondary side power distribution are connected by a cable, and the lead-in bushing 11 is connected to the moving vehicle 4 so that the power receiving line can be easily connected.
Aimed at the rear of 1.

Therefore, according to such a configuration, it is possible to load the substation equipment for one power receiving line onto one moving vehicle 41, which is not subject to the regulations stipulated in the Vehicle Restriction Order. This eliminates the need for disassembly, making it possible to assemble and disassemble in a short time, which is the original feature of mobile substation equipment, and also facilitates emergency response without the need for special applications or permits. Furthermore, by compactly consolidating the substation equipment into a single moving vehicle, the installation area is smaller compared to the conventional method of dividing it into multiple units, reducing restrictions on use due to on-site parking spaces. With,
Since the number of moving vehicles 41 can be reduced, costs for securing drivers, maintaining moving vehicles, etc. are significantly reduced, which is economically advantageous.

Note that the present invention is not limited to the above embodiments,
Various modifications can be made without changing the gist.

H1 Effects of the Invention As detailed above, according to the mobile substation device of the present invention, the interrupting part of the circuit breaker is housed in a tank together with an insulating medium, and this tank is vertically installed on the floor of the mobile vehicle. The tank is provided with a retractable bushing and a flange connection part to constitute the power receiving switchgear, and the power receiving switchgear is integrally connected to the transformer and loaded on the moving vehicle, so that the vehicle can be operated while traveling. It has excellent mobility and can be loaded with all substation equipment and transported to the site without being subject to restriction orders.
Moreover, economically advantageous mobile substation equipment can be provided.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram showing one embodiment of the present invention, Figs. 2 and 3 are side and front views showing a power receiving switchgear which is the main part of the embodiment, and Fig. 4 is a circuit diagram showing the same embodiment. A side view showing a schematic configuration of the applied mobile substation equipment, and FIG. 5 is a circuit diagram showing the conventional mobile substation equipment. 11... Retraction bushing, 12... Current transformer, 1
3... Breaker, 14... Lightning arrester, 15, 15u, 1
5v, 15w... Power receiving switchgear, 16... Flange connection part, 17... Transformer, 17a, 18a... Bushing, 18... Secondary power distribution switchgear, 21... Cylindrical tank , 22... Operation box, 23... Operation mechanism, 4
DESCRIPTION OF SYMBOLS 1... Moving vehicle, 41a... Loading platform, 42... Transformer cooler, 43... Control panel. 1 other person Figure 1 Circuit diagram of substation Aya column for starting (Futaki)

Claims (1)

[Claims] (1) In mobile substation equipment in which substation equipment such as transformers and power receiving switchgears are loaded onto a moving vehicle, the interrupting part of the circuit breaker is housed in a tank together with an insulating medium, and this tank is placed on the floor of the moving vehicle. The power receiving switchgear is configured by providing the tank with a lead-in bushing and a flange connection part, and the power receiving switchgear is integrally connected to the transformer and loaded on the moving vehicle. Mobile substation equipment featuring: