CN201937193U

CN201937193U - Mobile box-type transformer substation automobile with automatic phase-checking system

Info

Publication number: CN201937193U
Application number: CN2010206896405U
Authority: CN
Inventors: 耿德福; 陈允柯; 马超
Original assignee: Xuzhou Handler Special Vehicle Co Ltd
Current assignee: State Grid Fujian Electric Power Co Ltd
Priority date: 2010-12-30
Filing date: 2010-12-30
Publication date: 2011-08-17
Anticipated expiration: 2020-12-30

Abstract

Disclosed is a mobile box-type transformer substation automobile with an automatic phase-checking system, wherein a transformer and a low-voltage cabinet are installed on an automobile. The automobile is characterized in that a low-voltage breaker and an automatic phase-checking system are installed in the low-voltage cabinet, and the automatic phase-checking system comprises a phase-checking instrument and indicator lights. A time relay is installed in the low-voltage cabinet, a coil of the time relay is connected in a phase-checking instrument circuit, and a contact terminal (switch) of the time relay is connected in an electricity-gaining circuit of an electric-operating mechanism which drives the low-voltage breaker. With the results of the automatic phase-checking, the electric-operating mechanism gains electricity by the time relay so as to pull in the low-voltage breaker, so that the automatic switchover is realized. The beneficial effect of the automobile is that: when the mobile box type transformer substation automobile is used for the overhaul of the bypasses of the transformer of the distributing network, automatic phase-checking and automatic switchover can be realized, so that manual phase-checking and switchover on site are avoided.

Description

The movable case that has automatic kernel phase system becomes car

Technical field

The utility model relates to a kind of movable case that has automatic kernel phase system and becomes car, belongs to power industry emergency service or upkeep operation construction field, especially distribution transformer bypass hotline maintenance construction.

Background technology

Component devices such as the transformer of distribution network system, switch, gold utensil, cable all need carry out a large amount of maintenance every year; At present, the mode of interruption maintenance is mainly adopted in the power distribution network overhaul of the equipments, and along with the raising that social development requires power supply reliability, the interruption maintenance construction does not become pressing for of a kind of power distribution network upkeep operation.

At present, the power distribution network not way of interruption maintenance construction employing has two kinds, and a kind of is to power to the terminal use as interim power supply with diesel-oil electric generator wagon; There are shortcomings such as noise is big, air pollution is big in this way; Another kind is that to become car with movable case be that the transformer that the bypass power supply system substitutes in the electrical network is temporarily waited for repair apparatus, and this way overcomes the shortcoming of first method, is promoted.

Because there is the difference at three-phase phase angle in alternating current, change the AC power of load, need to guarantee the three-phase phase angle unanimity of two kinds of power supplys, otherwise may cause the alternating current machine rotation direction to become anti-; Therefore, movable case becomes car as distribution transforming net transformer bypass upkeep operation the time, needs to check movable case and becomes transformer in the car and distribution transforming net transformer to feed out between the circuit phase angle consistent.

At present, movable case becomes car and all is not with automatic nuclear phase function, as power distribution network transformer bypass upkeep operation the time, movable case becomes the operation of car nuclear phase and is all undertaken by manual type, complex operation if the consequence that misoperation brings is serious, also is difficult to adapt to the development need of automatic switchover.

Summary of the invention

The purpose of this utility model provides a kind of movable case that has an automatic kernel phase system and becomes car, avoiding on-the-spot artificial nuclear phase operation, and, can realize that movable case becomes transformer in the car and distribution transforming net transformer and feeds out automatic switchover between the circuit.

The technical scheme that realizes the utility model purpose is: a kind of movable case that has automatic kernel phase system becomes car, transformer and low-voltage cabinet are installed on automobile, it is characterized in that: low-voltage circuit breaker and automatic kernel phase system are installed in the described low-voltage cabinet, and this automatic kernel phase system is made of nuclear phase instrument, indicator light etc.Its basic principle is: become the car low-voltage circuit breaker at movable case and be in off-state, it is fed out circuit and receive the power distribution network transformer low voltage feed out end, so the power distribution network transformer low voltage is fed out the nuclear phase instrument of holding in the three-phase phase signal introducing movable case change car low-voltage cabinet, nuclear phase instrument is with this signal and the comparison of low-voltage circuit breaker input three-phase potential, confirm whether phase place is identical, and the nuclear phase result is shown by indicator light.

Be provided with the time relay in the described low-voltage cabinet, the coil of this time relay is connected in the described nuclear phase instrument circuit; The contact of this time relay (switch) be connected the electrically operated institution that drives low-voltage circuit breaker in the circuit.Above-mentioned automatic nuclear phase result also can pass through the time relay, and it is electric that the electrically operated institution that drives low-voltage circuit breaker is got, and the adhesive low-voltage circuit breaker is realized automaticallying switch.

The beneficial effects of the utility model are: movable case becomes car as distribution transforming net transformer bypass upkeep operation the time, and nuclear phase and automatic switchover automatically is to avoid on-the-spot artificial nuclear phase operation and handover operation.

Description of drawings

Fig. 1 is the compartment layout schematic diagram that the movable case of nuclear phase automatically becomes car;

Fig. 2 is automatic nuclear phase and automatic switchover system circuit theory schematic diagram.

Among the figure: 1. automobile, 2. compartment, 3. transformer, 4. low-voltage cabinet, 5. electricity behaviour circuit breaker, 6. nuclear phase instrument, 7. nuclear phase indicator light, the 8. time relay.

Embodiment

Embodiment 1, the movable case that has automatic kernel phase system becomes car, with reference to Fig. 1, Fig. 2: among the figure, compartment 2 is set on the chassis of automobile 1, transformer 3, low-voltage cabinet 4 etc. are installed in the compartment 2, are provided with electricity behaviour circuit breaker 5, nuclear phase instrument 6, the nuclear phase indicator light 7 and the time relay 8 in the low-voltage cabinet 4.Become car electricity behaviour circuit breaker 5 at case and be in off-state, it is fed out cable and receive the power distribution network transformer low voltage feed out end, so the power distribution network transformer low voltage is fed out the nuclear phase instrument of holding in the three-phase phase signal introducing movable case change car low-voltage cabinet 46, nuclear phase instrument 6 is with this signal and the comparison of electricity behaviour circuit breaker 5 input three-phase potentials, if phase place is identical, then signal is shown by nuclear phase indicator light 7, make the time relay 8 get electric and self-sustaining simultaneously, the time relay 8 gets the electric low-voltage circuit breaker electrically operated institution that makes and gets, adhesive low-voltage circuit breaker 5 main contactss, thus make case become car transformer 3 and power distribution network parallel operation of transformers.If phase place is inequality, then the two-phase that three-phase wherein need be fed out in the cable is exchanged tie point.

Claims

1. a movable case that has automatic kernel phase system becomes car, and transformer and low-voltage cabinet are installed on automobile, it is characterized in that: low-voltage circuit breaker and automatic kernel phase system are installed in the described low-voltage cabinet, and this automatic kernel phase system is made of nuclear phase instrument, indicator light.

2. the movable case that has automatic kernel phase system according to claim 1 becomes car, and it is characterized in that: be provided with the time relay in the described low-voltage cabinet, the coil of this time relay is connected in the described nuclear phase instrument circuit; The contact of this time relay be connected the electrically operated institution that drives low-voltage circuit breaker in the circuit.