JPH058766Y2 - - Google Patents
Info
- Publication number
- JPH058766Y2 JPH058766Y2 JP2355387U JP2355387U JPH058766Y2 JP H058766 Y2 JPH058766 Y2 JP H058766Y2 JP 2355387 U JP2355387 U JP 2355387U JP 2355387 U JP2355387 U JP 2355387U JP H058766 Y2 JPH058766 Y2 JP H058766Y2
- Authority
- JP
- Japan
- Prior art keywords
- generator
- load
- distribution line
- power supply
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 6
- 230000001052 transient effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は配電線無停電工事用として常用電源に
代わり負荷に電力を供給する応急用電源供給装置
に関し、特に発電機投入時の過負荷による停電や
線路電圧の過渡変動を防ぐことができるよう改良
された配電線無停電工事用電源供給装置に関す
る。[Detailed description of the invention] (Field of industrial application) The present invention relates to an emergency power supply device for supplying power to loads in place of the regular power source for use in uninterruptible distribution line construction work, especially when overloaded when a generator is turned on. This invention relates to a power supply device for uninterruptible construction work on distribution lines that has been improved to prevent power outages and transient fluctuations in line voltage.
（従来の技術）
近時、配電線工事に際し、無停電で工事を行な
うことが強く要望されている。そこで一般に、配
電線工事中や、その負荷側に対して移動電源車に
よつて電力を供給し続け、停電を工事区間のみに
極限することが行われている。(Prior Art) Recently, there has been a strong demand for uninterrupted power distribution line construction. Therefore, in general, mobile power supply vehicles continue to supply power to the distribution line and its loads during construction, thereby limiting power outages to only the construction section.
このような工事に使用する従来の装置は、第３
図の単線接続図に示すように配電線１の途中に挿
入された柱上開閉器３の負荷側に発電機回路９を
接続し、発電機８を配電線電圧に同期投入した
後、柱上開閉器３を開路して負荷を応急用電源に
切換え、次に電源側の近い隣接の柱上開閉器２を
開放し、柱上開閉器２と３の間の工事を行なう。 Conventional equipment used for such construction works is
As shown in the single-line connection diagram in the figure, the generator circuit 9 is connected to the load side of the pole switch 3 inserted in the middle of the distribution line 1, and after the generator 8 is turned on in synchronization with the distribution line voltage, The switch 3 is opened to switch the load to the emergency power supply, then the adjacent pole switch 2 on the power supply side is opened, and construction work between the pole switches 2 and 3 is performed.
（考案が解決しようとする問題点）
上述した従来の配電線無停電工事用電源切換え
方法では、切換え直前の配電の負荷状態が確認で
きないため、発電機が負荷投入直後に過負荷とな
つて緊急遮断が発生して停電する恐れがある。万
一停電したとき、場合によつては負荷使用者に多
大の迷惑を与え、重大事故発生の可能性もあると
いう問題点がある。(Problem that the invention aims to solve) In the conventional power switching method for distribution line uninterruptible construction work described above, it is not possible to confirm the load status of the distribution immediately before switching, so the generator becomes overloaded immediately after the load is applied, resulting in an emergency situation. There is a risk of a blockage occurring and a power outage. In the event of a power outage, there is a problem in that it may cause great inconvenience to load users and may even cause a serious accident.
また、停電に致らなくとも、切換え前に負荷量
の確認ができないため、発電機出力を負荷量に見
合つた値まで上昇させて切換えることができず、
開閉操作による切換えで、電圧の過渡変動は免れ
ることができないなどの問題点がある。 Furthermore, even if a power outage does not occur, the load cannot be confirmed before switching, making it impossible to increase the generator output to a value commensurate with the load before switching.
There are problems such as the unavoidable voltage transient fluctuation due to switching by opening/closing operations.
本考案の目的は、このような問題点を解決し、
発電機投入前に配電線の負荷量を計測し、これに
より発電機出力を適当な値として、負荷切換え時
に停電や電圧の過渡変動を生じないようにするこ
とができる配電線無停電工事用電源供給装置を提
供することにある。 The purpose of this invention is to solve these problems and
A power supply for uninterruptible construction work on distribution lines that measures the load on the distribution line before turning on the generator and adjusts the generator output to an appropriate value to prevent power outages and voltage transient fluctuations when switching loads. The purpose is to provide a supply device.
（問題点を解決するための手段）
前記の目的を達成するため、本考案による配電
線無停電工事用電源供給装置は、配電線電源の代
わりに負荷に電力を供給する発電機８を含む発電
機回路２０と、配電線１の活線開放部分、柱上開
閉器３に並列に接続され配電線１の負荷量を計測
する手段１１，１２，１３を有する並列回路１０
と、並列回路１０の一端を活線開放部分、柱上開
閉器３の前記電源側に接、断可能に接続する手段
４と、並列回路１０の他端と発電機回路２０の出
力端を接続した接続点６を活線開放部分、柱上開
閉器３の負荷に接、断可能に接続する手段５を備
えた構成とする。(Means for Solving the Problems) In order to achieve the above object, the power supply device for uninterruptible work on distribution lines according to the present invention uses a generator 8 that supplies power to loads instead of the distribution line power source. A parallel circuit 10 having means 11 , 12 , 13 connected in parallel to the machine circuit 20 , the live open part of the distribution line 1 , and the pole switch 3 and measuring the load amount of the distribution line 1
, a means 4 for connectably connecting one end of the parallel circuit 10 to the live wire open portion and the power supply side of the pole switch 3, and connecting the other end of the parallel circuit 10 to the output end of the generator circuit 20. The structure includes means 5 for connecting and disconnecting the connecting point 6 to the live line open portion and the load of the pole switch 3.
（実施例）
次に本考案の実施例について図面を参照して説
明する。(Example) Next, an example of the present invention will be described with reference to the drawings.
第１は、本考案による一実施例を示す複線接続
図である。 The first is a double-line connection diagram showing an embodiment of the present invention.
第２図は、動作説明のため、第１図の実施例を
簡略化して示した単線接続図である。 FIG. 2 is a simplified single-line connection diagram of the embodiment shown in FIG. 1 to explain the operation.
第１図において、配電線１の途中に設けられた
柱上開閉器２と３の間の工事を行なうとき、本実
施例装置を搭載した移動電源車を負荷に近い柱上
開閉器２の近くに配置し、断路器４，５の一端
を、それぞれ柱上開閉器３の電源側と負荷側に接
続して工事を行なう。 In Fig. 1, when performing construction work between pole switches 2 and 3 installed in the middle of distribution line 1, a mobile power supply vehicle equipped with the device of this embodiment is moved near pole switch 2 near the load. The construction work is carried out by connecting one end of the disconnectors 4 and 5 to the power supply side and the load side of the pole-mounted switch 3, respectively.
断路器４の他端は並列回路１０のしや断器７の
一端に接続され、しや断器７の他端は発電機回路
２０の出力端６と共に断路器５の他端に接続され
ている。 The other end of the disconnector 4 is connected to one end of the disconnector 7 of the parallel circuit 10, and the other end of the disconnector 7 is connected to the other end of the disconnector 5 together with the output end 6 of the generator circuit 20. There is.
また発電機８は、しや断器１７を介して発電機
回路の出力端６に接続されている。 Further, the generator 8 is connected to the output end 6 of the generator circuit via a breaker 17 .
そして、しや断器７の断路器４側に計器用変成
器PT1を介して電圧計１１が接続され、しや断器
７の断路器５側には計器用変流器CT1を介して電
流計１２が接続され、電力計１３は、計器用変成
器PT1と計器用変流器CT1に接続されている。 A voltmeter 11 is connected to the disconnector 4 side of the shield breaker 7 via a voltage transformer PT 1 , and a voltmeter 11 is connected to the disconnector 5 side of the shield breaker 7 via a voltage transformer CT 1 . An ammeter 12 is connected to the power meter 13, and a wattmeter 13 is connected to a voltage transformer PT 1 and a current transformer CT 1 .
また、しや断器１７の発電機８側には計器用変
成器PT2を介して電圧計２１が接続され、しや断
器１７の断路器５側には計器用変流器CT2を介し
て電流計２２が接続され、電力計２３は、計器用
変成器PT2と計器用変流器CT2に接続されてい
る。 Further, a voltmeter 21 is connected to the generator 8 side of the shield breaker 17 via a voltage transformer PT 2 , and a voltage current transformer CT 2 is connected to the disconnect switch 5 side of the shield circuit breaker 17. An ammeter 22 is connected thereto, and a wattmeter 23 is connected to a potential transformer PT 2 and a potential current transformer CT 2 .
次に本実施例の使用方法について説明する。 Next, how to use this embodiment will be explained.
第２図に示すように配電線１の柱上開閉器２か
ら柱上開閉器３までの区間内の工事を行なうと
き、柱上開閉器３より負荷側を無停電にして電力
供給を続けるため、まず柱上開閉器３の電源側お
よび負荷側から柱上開閉器３を閉路のまま活線状
態で、点線で示す配線により電源車に引込み、柱
上開閉器３の電源側を断路器４に、負荷側を断路
器５に接続する。次に異相接続しないように検相
手順に従つて断路器４と５を投入する。 As shown in Figure 2, when construction is carried out within the section from pole switch 2 to pole switch 3 of distribution line 1, the load side from pole switch 3 is uninterrupted to continue power supply. First, the pole switch 3 is connected from the power supply side and the load side to the power supply vehicle with the wires shown in dotted lines in a live state with the pole switch 3 closed, and the power supply side of the pole switch 3 is connected to the disconnect switch 4. Then, connect the load side to the disconnector 5. Next, disconnectors 4 and 5 are turned on according to the phase detection procedure to prevent out-of-phase connections.
次にしや断器７を閉路し、続いて柱上開閉器３
を開路すると、負荷の電圧、電流、電力が表示さ
れる。そこでこの負荷量が交流発電機８の容量を
超えていないことを確認する。次にしや断器１７
を閉路して、発電機８を配電線１に同期投入した
後、発電機８の出力を逐次上昇させ、さきに計測
した負荷量近く到達させた後、しや断器７を開路
する。次に断路器４を開路し最後に柱上開閉器２
を開路する。 Next, the circuit breaker 7 is closed, and then the pole switch 3 is closed.
When opened, the voltage, current, and power of the load will be displayed. Therefore, it is confirmed that this load amount does not exceed the capacity of the alternator 8. Next, the disconnector 17
After closing the generator 8 and synchronously connecting the generator 8 to the distribution line 1, the output of the generator 8 is gradually increased until it reaches a load close to the previously measured load, and then the bow breaker 7 is opened. Next, disconnect switch 4 is opened, and finally pole switch 2 is opened.
Open the circuit.
なお工事終了後、復旧操作を行なう場合は、前
記操作を逆順序で行い、発電機８の出力を逓減し
てから切換えればよい。 If a restoration operation is to be performed after the construction is completed, the above operations may be performed in reverse order to gradually reduce the output of the generator 8 before switching.
（発明の効果）
以上説明したように、本考案は、配電線の活線
開放部分に並列に接続され、その配電線の負荷量
を計測する手段を有する並列回路を設け、この並
列回路の常用電源側および負荷側への接続を、
接、断の操作が容易にできるようにしたので、発
電機投入前の負荷量を知ることができる。そし
て、これに見合つた発電機出力に上昇させた後、
投入できる。(Effects of the Invention) As explained above, the present invention provides a parallel circuit that is connected in parallel to the live open part of the distribution line and has means for measuring the load on the distribution line, Connections to the power supply side and load side,
Since the connection and disconnection operations can be easily performed, it is possible to know the load amount before turning on the generator. After increasing the generator output to match this,
Can be invested.
このように発電機投入直前の配電線負荷量を確
認しないで、単なる推定により投入した場合、現
実の負荷が発電機容量を超えていれば過負荷しや
断となり停電となる。 In this way, if the power generator is turned on simply by estimation without checking the distribution line load immediately before turning on the power generator, if the actual load exceeds the generator capacity, the power will be overloaded and cut off, resulting in a power outage.
したがつて、本実施例装置を使用することによ
り停電が避けられ、操作者も自信をもつて発電機
の投入が行なえるという効果がある。 Therefore, by using the device of this embodiment, power outages can be avoided and the operator can turn on the generator with confidence.
また、発電機投入時に、負荷量に見合つた出力
まで上昇させてから投入するので、常用電源と応
急電源の電源切換え時に従来のような電圧の過渡
変動が起こる恐れがない。 Furthermore, when the generator is turned on, the output is increased to an amount commensurate with the amount of load before being turned on, so there is no risk of voltage transient fluctuations occurring when switching between the regular power source and the emergency power source, as in the case of the conventional power source.
また復旧操作の場合は発電機出力を逓減してか
ら切換ることができるので電源に急激な負荷変動
を与えないので済むという効果もある。 Furthermore, in the case of restoration operations, the generator output can be gradually reduced before switching, which has the effect of not subjecting the power supply to sudden load fluctuations.
第１図は、本考案による配電線無停電工事用電
源供給装置の一実施例を示す複線接続図である。
第２図は、第１図の実施例の単線接続図である。
第３図は、従来の配電線無停電工事用電源供給装
置の例を示す単線接続図である。
１……配電線、２，３……柱上開閉器、４，５
……断路器、６……発電機回路出力端、７，１７
……しや断器、８……発電機、１０……並列回
路、１１、２１……電圧計、１２，２２……電流
計、１３，２３……電力計、２０……発電機回
路。
FIG. 1 is a double-line connection diagram showing an embodiment of the power supply device for uninterruptible construction work on distribution lines according to the present invention.
FIG. 2 is a single line connection diagram of the embodiment of FIG. 1.
FIG. 3 is a single-line connection diagram showing an example of a conventional power supply device for uninterruptible power distribution line work. 1... Distribution line, 2, 3... Pole switch, 4, 5
... Disconnector, 6 ... Generator circuit output end, 7, 17
...Shiya circuit breaker, 8 ... Generator, 10 ... Parallel circuit, 11, 21 ... Voltmeter, 12, 22 ... Ammeter, 13, 23 ... Wattmeter, 20 ... Generator circuit.
Claims (1)
電源の代わりに負荷に電力を供給する発電機を含
む発電機回路と、前記配電線の活線開放部分に並
列に接続され前記配電線の負荷量を計測する手段
を有する並列回路と、前記並列回路の一端を前記
活線開放部分の前記電源側に接、断可能に接続す
る手段と、前記並列回路の他端と前記発電機回路
の出力端を接続した接続点を前記活線開放部分の
負荷側に接、断可能に接続する手段を備えたこと
を特徴とする配電線無停電工事用電源供給装置。 When performing uninterruptible work on a distribution line, a generator circuit including a generator that supplies power to a load instead of the power source of the distribution line, and a load of the distribution line that is connected in parallel to a live open part of the distribution line. a parallel circuit having a means for measuring the quantity; a means for connectably connecting one end of the parallel circuit to the power supply side of the open live wire portion; and the other end of the parallel circuit and the output of the generator circuit. A power supply device for uninterruptible work on a distribution line, characterized in that it is provided with means for connecting and disconnecting a connection point with its ends connected to the load side of the live wire open portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2355387U JPH058766Y2 (en) | 1987-02-20 | 1987-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2355387U JPH058766Y2 (en) | 1987-02-20 | 1987-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63131551U JPS63131551U (en) | 1988-08-29 |
| JPH058766Y2 true JPH058766Y2 (en) | 1993-03-04 |
Family
ID=30821962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2355387U Expired - Lifetime JPH058766Y2 (en) | 1987-02-20 | 1987-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH058766Y2 (en) |
-
1987
- 1987-02-20 JP JP2355387U patent/JPH058766Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63131551U (en) | 1988-08-29 |
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