JP2002010418A - Power source car and method for low-tension consumer uninterruptible high-tension distribution line work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power source car, capable of directly and easily supplying power to an individual low-tension consumer subjected to service interruptible and a method for high-tension distribution line work in low-tension customer uninterruption, so as to improve workability by eliminating hot-line connection work of a high-tension distribution line, causing no noise or exhaust gas problems, and provide superior mobility. SOLUTION: A power source car 11, having a compact body and a small-size gas turbine generator, is located in a work section. The tip of a feed cable 20 extended from the power source car 11 is electrically connected to an overhead low-tension distribution line 2 in the work section. While low-voltage power is supplied from the power source car 11 to the overhead low-tension distribution line 2, the high-tension distribution line 1 in the work section is interrupted. Therefore, the hot-line connection work of a high-tension distribution line as in the bypassing method is dispensed with, and high level of safety and satisfactory workability are ensured. Unlike the work method, in which a compact power source car provided with a diesel engine generator is used, there are noise and exhaust gas problems generated and a work even in narrow roads can be carried out smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply vehicle for directly supplying power to a low-voltage customer without using a distribution line, and a power supply vehicle for constructing a high-voltage distribution line when the construction section is cut off. The present invention relates to a low-voltage customer uninterrupted high-voltage distribution line construction method for performing distribution line construction without interruption to a low-voltage customer using a vehicle.

[0002]

2. Description of the Related Art Conventionally, when performing high-voltage distribution line construction such as replacing an overhead high-voltage distribution line or replacing an overhead distribution device,
As an uninterruptible construction method in which low-voltage consumers are constructed without interruption, before a power cut in the construction section, a bypass cable and bypass equipment are used to provide an electrical detour in the construction section of the high-voltage distribution line. After supplying electric power to a customer from a detour, a bypass construction method in which power is cut in the construction section is widely adopted. FIG. 6 schematically shows the outline of the bypass method.
V, etc., 2 is a low voltage distribution line of 100V or 200V, 3 is a utility pole, 4 is a pole transformer for converting the voltage of the high voltage distribution line 1 to low voltage and connecting to the low voltage distribution line 2. The illustrated example is a case where the section between the AFs is a construction section of the high-voltage distribution line 1, and an electric detour is provided between the AFs of the high-voltage distribution line 1 by the high-voltage bypass cable 5 and the high-voltage bypass switch 6. Then, the high-voltage bypass cable 5 is connected via the construction transformer 7.
After connecting the low voltage distribution line 2 to the high voltage distribution line 1
Power outage. In the bypass method using the bypass cable 5, the bypass devices 6, 7 and the like as described above, by providing an electric detour, high-voltage distribution line construction can be performed without causing a power failure to a low-voltage customer. .

[0003] As another method of performing high-voltage distribution line construction without interruption to low-voltage consumers, a power supply vehicle equipped with a diesel generator using a diesel engine as a prime mover (a power supply vehicle equipped with a diesel generator). Some construction methods are used.
In this case, a power generator vehicle equipped with a diesel generator is placed in the construction section of the overhead distribution line, and the power of the diesel generator is supplied to the low-voltage distribution line so that the low-voltage customers do not have a power outage. Work on high voltage distribution lines.

[0004]

In the above-mentioned conventional bypass method, there is a problem that a large number of workers and work time are required for installing bypass cables and bypass devices, and workability is not good. In addition, there is always a safety problem, because the hot-line connection work between the bypass devices 6 and 7 and the high-voltage distribution line 1 before construction (before a power failure) is required. Further, in order to enable the hot-line connection work, it is necessary to cover the charged portion of the high-voltage overhead distribution line 1 with a protective device made of insulating rubber so that an electric shock accident does not occur, which is complicated. In some cases, hot-line connection work is performed using a hot-line operation stick (hot stick) that can provide electrical insulation. However, even with this method, a large amount of work time is required, and Is not good.

In the method using a power supply vehicle equipped with a diesel generator, a diesel engine using light oil is operated. Therefore, it is necessary to take measures to deal with noise and exhaust gas generated from the diesel engine. ,
There is a problem that a lot of cost is required for the measures. In addition, this conventional power supply vehicle requires a vehicle of 2 tons or more due to the size and weight of the diesel generator, and the overall shape and weight of the vehicle are large, making it difficult to enter narrow roads and maneuverable. Is also low.

Further, when it becomes necessary to directly supply electric power to individual consumers such as hospitals, stores, and ordinary households without a power distribution line, a power supply vehicle equipped with a diesel generator is also required. However, as described above, there is a problem that the power-supply vehicle equipped with a diesel generator is large and heavy and has low mobility.

The present invention has been made in view of the above circumstances, and when performing high-voltage distribution line construction without interruption to a low-voltage customer, there is a risk of an accident due to a live line connection operation such as a bypass method. And workability is good,
Low-voltage customer uninterrupted high-voltage distribution line construction that is free of problems such as noise and exhaust gas as the construction method using a power supply vehicle equipped with a diesel generator and that can be constructed even on narrow roads It is an object of the present invention to provide a method and a highly mobile power supply vehicle capable of directly and easily supplying electric power to low-voltage consumers without using a distribution line.

[0008]

According to a first aspect of the present invention, there is provided a power supply vehicle including a small gas turbine generator using a small gas turbine as a prime mover.

A power supply vehicle according to a second aspect of the present invention is the power supply vehicle according to the first aspect, wherein an adjustment unit for adjusting the output of the small gas turbine generator, a transformer for converting an output voltage from the adjustment unit, and the transformer And a power supply cable for supplying the voltage-converted power to the outside.

A third aspect of the present invention relates to a method for constructing a high-voltage distribution line without interruption by a low-voltage customer using the power supply vehicle according to the first or second aspect, wherein the high-voltage distribution line is constructed in such a manner that the construction section is cut off. Place the power vehicle in the construction section, then
The tip of the power supply cable extending from the power supply vehicle is electrically connected to the overhead low-voltage distribution line in the construction section, and then the low-voltage power is supplied from the power supply vehicle to the overhead low-voltage distribution line, and the high-voltage distribution in the construction section is supplied. It is characterized in that the electric wire is cut off.

[0011]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 is a power supply vehicle 11 equipped with a small gas turbine, which is a power supply vehicle according to an embodiment of the present invention.
FIG. 2 is a side view of FIG.

The small-sized gas turbine mounted power supply vehicle 11
A small truck 12 having a load of about 750 kg, a small gas turbine generator 13 using, for example, a small gas turbine having an output of about 30 kW as a prime mover of a generator, a fuel tank 14 for supplying fuel to the small gas turbine, An adjusting unit 1 having a converter and an inverter for adjusting the waveform of the output of the small gas turbine generator 13 and the like.
5 and a first transformer 17 for converting the output voltage from the adjusting unit 15 to 100V and a second transformer 18 for converting the output voltage to 200V. Further, a power supply switch 19 for switching between the voltages of 100 V and 200 V from both transformers 17 and 18 is provided, and a power supply cable 20 is connected to this. These power generation facilities are covered with a cover 23 as shown in FIG. As the fuel for the small gas turbine, various fuels such as kerosene, light oil, and natural gas can be used.

FIG. 3 is a view showing a state in which a low-voltage customer uninterrupted high-voltage distribution line construction method is carried out by using the above-described power supply vehicle 11 equipped with a small gas turbine, and FIG. 4 schematically shows the entire construction section. FIG. In these figures, 1 is a high-voltage distribution line of, for example, 6600V, 2 is 100V and 200V.
V is a low-voltage distribution line, 3 is a utility pole, and 4 is a pole transformer that converts the voltage of the high-voltage distribution line 1 to low voltage and connects to the low-voltage distribution line 2. In the illustrated example, this is an overhead high-voltage distribution line construction in which a section between AFs of the high-voltage distribution line 1 is a power outage construction section.

The working procedure will be described with reference to FIGS.
As shown in (1), first, the small-sized gas turbine-mounted power supply vehicle 11 is arranged in a construction section of an overhead distribution line. Next, the distal end of the power supply cable 20 extending from the small gas turbine-mounted power supply vehicle 11 is electrically connected to the low-voltage distribution line 2 in the construction section. The connection with this low-voltage distribution line 2
The conductor is exposed by peeling off the insulating coating of the power supply cable 20 and the end of the power supply cable 20 is connected to the exposed portion by the clamp 21. Can be easily and safely performed. Next, the small gas turbine generator 13 is operated to supply power of 100 V or 200 V to the low-voltage distribution line 2, and then the switch 22 is turned off to open the low-voltage distribution line 2 from the high-voltage distribution line 1. Next, the AF section of the high-voltage distribution line 1 is cut off (indicated by a cross), and the power is cut off in the AF section. Thus, high-voltage distribution line construction can be performed without interruption to low-voltage consumers, with the section between AFs of the high-voltage distribution line 1 as a power failure construction section. Although not described in detail, using the instantaneous switching device, the power supply from the small gas turbine-equipped power supply vehicle 11 to the low-voltage distribution line 2 and the operation of releasing the low-voltage distribution line 2 from the high-voltage distribution line 1 are simultaneously performed. You can do it too.

The above-mentioned power supply vehicle 1 mounted on a small gas turbine.
According to the construction method 1, compared with the conventional bypass construction method,
Since the hot-line connection work of the high-voltage distribution line 1 is not required, there is no risk of an accident accompanying the hot-line connection operation of the high-voltage distribution line 1.

Further, as compared with the conventional construction method using a diesel generator, the gas turbine has no piston reciprocating motion as in the diesel engine and has few mechanical contact parts, so that the noise is significantly reduced. Therefore, nighttime construction can be performed without any problem. Moreover, relief since the fuel is completely burned to be introduced into the gas turbine, with an efficient, its NO _X in the exhaust gas (nitrogen oxide) is significantly reduced compared with the case of the Diesel engine, the air pollution problem it can. In addition, the gas turbine is compatible with various fuels such as kerosene, light oil, and natural gas, and is more preferable than a diesel engine. For example, a small gas turbine with an output of about 30 kW is sufficiently small and lightweight, and even if the entire system necessary to generate low-voltage 200 V electricity is mounted on a vehicle, the vehicle will still be 750 kg as described above.
This is possible with a light truck loaded. Therefore, the vehicle can enter and be arranged on a narrow road, and the mobility can be significantly improved. The output of the small gas turbine is not limited to about 30 kW, but may be an output of, for example, 10 kW to 100 kW.

In the embodiment, the high-voltage distribution line is an overhead distribution line, but the present invention can be applied to a case where the high-voltage distribution line is an underground distribution line. That is, the present invention can be applied to a case where a low-voltage distribution line is drawn from an underground high-voltage distribution line and installed.

In the above-described embodiment, the small-sized gas turbine-mounted power supply vehicle 11 is used for high-voltage distribution line construction. However, the small-sized gas turbine-mounted power supply vehicle 11 has no relation to the distribution line construction. Can be used for low voltage power supply. For example, as shown in FIG. 5, the power supply cable 20 of the small-sized gas turbine-equipped power supply vehicle 11 is connected to a hospital, a store, a general home, or the like in which a power failure has occurred, and low-voltage power is directly supplied without using a distribution line. be able to.

The power supply vehicle of the present invention is a power supply vehicle mounted on a small gas turbine equipped with a small gas turbine generator using a small gas turbine as a prime mover, and has the following various effects. In the case of using the method for constructing a high-voltage distribution line without interruption by a low-voltage customer as claimed in claim 3, since the hot-line connection work of the high-voltage distribution line is not required as compared with the conventional bypass method, the live line of the high-voltage distribution line is not required. This eliminates the risk of accidents associated with connection work, and improves safety. Compared with the conventional method using a diesel generator, the gas turbine does not have a piston reciprocating motion like a diesel engine and has few mechanical contact parts, so that noise is significantly reduced. Therefore, nighttime construction can be performed without any problem. Since the fuel is completely burned to be introduced into the gas turbine, with an efficient, NO _X (nitrogen oxides) in the exhaust gas is significantly less than in the case of Diesel engines, it can reduce the air pollution problem. Gas turbines are compatible with various fuels such as kerosene, light oil, and natural gas, and have more options and are more convenient than diesel engines that use almost only light oil. For example, a small gas turbine with an output of about 30 kW is sufficiently small and light, and can use a small truck with a load of about 750 kg, so that it can enter narrow roads,
Mobility is significantly increased. The power supply vehicle of the present invention is not limited to the case where it is used for distribution line construction, and can supply low-voltage power directly and easily to a hospital, a store, a general household, or the like that has lost power. It exerts its effect greatly. Hot water supply and heating can be performed using the exhaust gas of the small gas turbine.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a power supply vehicle according to an embodiment of the present invention.

FIG. 2 is a side view of the power supply vehicle of FIG.

FIG. 3 is a diagram showing a situation where an overhead high-voltage distribution line is constructed by the low-voltage consumer uninterrupted high-voltage distribution line construction method using the power supply vehicle.

FIG. 4 is a diagram schematically showing the entire construction section of the overhead high-voltage distribution line construction in FIG. 3;

FIG. 5 is a diagram showing an embodiment in which the power supply vehicle of the present invention is used for supplying power to a hospital or the like.

FIG. 6 shows a conventional example, and is a view schematically showing an entire construction section of an overhead high-voltage distribution line construction by a bypass method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High-voltage distribution line 2 Low-voltage distribution line 11 Power supply vehicle (small gas turbine mounted power supply vehicle) 12 Light truck 13 Small gas turbine generator 15 Adjustment unit 20 Power supply cable 21 Clamp

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masayuki Furukawa 1-5-1 Kiba, Koto-ku, Tokyo Fujikura Co., Ltd. F-term (reference) 5G015 FA10 GA17

Claims (3)

[Claims] 1. A power supply vehicle having a small gas turbine generator using a small gas turbine as a prime mover mounted on a vehicle. 2. An adjusting unit for adjusting an output of the small gas turbine generator, a transformer for converting an output voltage from the adjusting unit, and a power supply for supplying the power converted by the transformer to the outside. The power supply vehicle according to claim 1, wherein the power supply cable and the power supply cable are mounted on the vehicle. 3. A power supply vehicle according to claim 1 or 2, wherein the high-voltage distribution line is constructed by suspending the power in the construction section, and the power supply vehicle according to claim 1 is arranged in the construction section, and then a leading end of a power supply cable extending from the power supply vehicle is connected to the power supply vehicle. A low-voltage demand that is electrically connected to the overhead low-voltage distribution line in the construction section, and then supplies low-voltage power from the power supply vehicle to the overhead low-voltage distribution line and stops the high-voltage distribution line in the construction section. High-voltage distribution line construction method of uninterrupted house.