JPS60160604A - Shunt reactor - Google Patents

Abstract

PURPOSE:To easily install a shunt reactor in the side of substation for power distribution through alleviation of power transmission loss and without increase of installation space by providing a main winding and a secondary winding for power transformation having a winding ratio corresponding to a distribution voltage for such main winding. CONSTITUTION:The titled 3-phase shunt reactor provides the main windings 16a-16c to an iron core leg 15 having a gap 14 of iron core 13, further adds the secondary windings 17a-17c for distribution voltage and sets the winding ratio in order to drop the voltage to 3.3-22kV from 66-154kV. A reactive power is reduced by setting the phase delay component of shunt reactor TrR corresponding to the phase lead component of a power capacitor 9 and it can be replaced with a transformer at the power substation 3 for power distribution by the effect of transformation. The power distribution facilities for shunt reactor including the power distribution elements such as a line breaker P and a circuit breaker Q, etc. can be abbreviated by providing the shunt reactor TrR which also operates as the transformer in place of the conventional transformer and thereby the facilities can be as much simplified and moreover expansion of the field and premises of power substation 3 for power distribution is no longer required.

Description

【発明の詳細な説明】 この発明は分路リアクトルに関するものである。[Detailed description of the invention] This invention relates to a shunt reactor.

現在の電力系統を第１図に示している。すなわち、Ａは
２２０〜５００に■の超々高圧系統、■は２２０〜５０
０ＫＶ／６６〜１５４ＫＶの１次変電所、２は６６〜１
’５４に■送電線、３は６６〜１５４ＫＶ／６．６〜２
２ＫＶ配電用変電所、４は６．６〜２２ＫＶ配電線、５
は６．６〜２２ＫＶ受電需要家、６は６．６〜２２ＫＶ
／１００〜４００Ｖ柱上変圧器、７は電灯需要家である
。The current power system is shown in Figure 1. In other words, A is 220-500 and ■ ultra-super high voltage system, ■ is 220-500
0KV/66~154KV primary substation, 2 is 66~1
'54 ■Power line, 3 is 66-154KV/6.6-2
2KV distribution substation, 4 is 6.6-22KV distribution line, 5
is 6.6-22KV power receiving consumer, 6 is 6.6-22KV
/100-400V pole transformer, 7 is an electric light consumer.

このような電力系統において、従来第２図のように並列
コンデンサ８以外に、需要家５，７に設置された電力用
コンデンサ９が多く、しかも深夜になって負荷が少なく
なった場合でも電力用コンデンサ９が切離されるケース
が少ないため、進相骨の突き上げが多くなるという問題
がある。そこでこれを補償するため１次変電所１に分路
リアクトル１０を設置して超々高圧系統Ａへ流入する無
効電力が少なくなるようにしている。In such power systems, conventionally, as shown in Fig. 2, in addition to the parallel capacitor 8, there are many power capacitors 9 installed at consumers 5 and 7, and even when the load decreases late at night, the power capacitors 9 Since there are few cases in which the capacitor 9 is disconnected, there is a problem in that the phase-accelerating bone is often pushed up. Therefore, in order to compensate for this, a shunt reactor 10 is installed in the primary substation 1 to reduce the amount of reactive power flowing into the ultra-super high voltage system A.

ところで、このような分路リアクトル１０は、１次変電
所１側に設置するよりも第２図の破線および第３図のよ
うに配電用変電所３側に分路リアクトル１１．１２を設
置する方が送２電線２に流れる無効電力が少ないため、
送電損失の軽減上有利である。しかし、配電用変電所３
に設置する場合、分路リアクトル１１．１２の容量が５
〜２０ＭＶＡと比較的小容量となり、１次変電所ｌで使
用されている２０〜１２０ＭＶＡの大容量のものに比較
して容量当りの費用が高価になる。また配電用変電所３
内にスペースや開閉装置用の用地が新たに必要となる。By the way, rather than installing such a shunt reactor 10 on the primary substation 1 side, the shunt reactor 11.12 is installed on the distribution substation 3 side as shown by the broken line in FIG. 2 and in FIG. 3. Since less reactive power flows to the transmission line 2,
This is advantageous in reducing power transmission losses. However, distribution substation 3
If the capacity of shunt reactor 11.12 is 5.
It has a relatively small capacity of ~20 MVA, and the cost per capacity is higher than the large capacity of 20 to 120 MVA used in the primary substation I. Also, distribution substation 3
Additional space and land for the switchgear will be required within the building.

とくに分路リアクトルを置く必要があるのはケーブル系
の多い人口密度の高い都心部分であるため、なおさら変
電所用地の確保が困難な場所である。したがって配電用
変電所３への設置が困難であり、現在の電力系統では配
電用変電所３に分路リアクトル１１．’１２が設置され
ることはほとんどない。In particular, it is necessary to install shunt reactors in densely populated urban areas with many cable systems, making it even more difficult to secure land for substations. Therefore, it is difficult to install the shunt reactor 11 in the distribution substation 3 in the current power system. '12 is rarely installed.

したがって、この発明の目的は、送電損失の軽減を図り
、設置スペースを増大しないで配電用変電所側に容易に
設置することができる分路リアクトルを提供することで
ある。Therefore, an object of the present invention is to provide a shunt reactor that reduces power transmission loss and can be easily installed at a power distribution substation without increasing installation space.

この発明の一実施例を第４図ないし第６図に示す。すな
わち、この３相用分路リアクトルは、鉄心１３のギヤン
グ１４を有する鉄心脚１５に主巻線１６ａ〜１６ｃを設
け、さらに配電電圧用２次巻線１７ａ−１７ｃを付加し
、巻数比を６６〜１５４に■／３．３〜２２ＫＶに降圧
されるようにしたものである。第５図はこの分路リアク
トルＴｒＲの等価回路であり、分路リアクトルＴｒＲの
遅相分を電力用コンデンサ９の進相分に対応させること
により無効電力を低減し、また変圧作用により配電用変
電所３における変圧器に代用するごとができることとな
る。An embodiment of this invention is shown in FIGS. 4 to 6. That is, in this three-phase shunt reactor, main windings 16a to 16c are provided on the core leg 15 having the gearing 14 of the core 13, and secondary windings 17a to 17c for power distribution voltage are further added, and the turns ratio is 66. -154, the voltage is stepped down to /3.3-22KV. FIG. 5 shows an equivalent circuit of this shunt reactor TrR, which reduces reactive power by making the lagging phase component of the shunt reactor TrR correspond to the leading phase component of the power capacitor 9, and also transforms the distribution substation through the transformer action. This means that it can be used in place of the transformer at point 3.

このように、変圧作用を兼ねた分路リアクトルＴｒＲを
第６図のように従来の変圧器に代えて設置することによ
り、第３図との比較からも明らかなように断路器Ｐ、シ
ゃ断器Ｑ等の電路要素を含む分路リアクトル用配電設備
が省略されるため設備が簡素になり、また配電用変電所
３の用地や建物等を新に増大することがなく、従来の配
電用変圧器とほぼ同一の用地、および機器コストのもの
で配電用変電所３において遅相無効電力を供給すること
が可能になる。したがって系統全体での合理的な無効電
力のバランスがとれ、送電線での送電損失の軽減を図る
ことができる。In this way, by installing the shunt reactor TrR that also functions as a transformer in place of the conventional transformer as shown in Figure 6, the disconnector P and the Because the distribution equipment for the shunt reactor, including circuit elements such as the disconnector Q, is omitted, the equipment is simplified, and there is no need to add new land or buildings for the distribution substation 3, making it possible to replace the existing distribution equipment. It becomes possible to supply delayed phase reactive power at the distribution substation 3 using almost the same site and equipment cost as a transformer. Therefore, it is possible to achieve a reasonable balance of reactive power in the entire system, and to reduce power transmission losses on power transmission lines.

第７図は単相用分路リアクトル、第８図は３相用分路リ
アクトルの他の実施例で主巻線１６′。FIG. 7 shows a single-phase shunt reactor, and FIG. 8 shows another embodiment of a three-phase shunt reactor, with the main winding 16'.

１６’ａ”１６’ｃに複数のタップ１８を設けてタップ
Ｉ８を切換えるようにした負荷電圧調整器１９を有する
ものである。Ｎは中性点、２０ば負荷である。A plurality of taps 18 are provided at 16'a'' and 16'c, and a load voltage regulator 19 is provided to switch the tap I8.N is a neutral point, and 20 is a load.

以上のように、この発明の分路リアクトルは、配電電圧
用２次巻線を設けたため、従来に比してスペースを増大
することなく配電用変電所に設置することができ、しか
も配電用変電所の設備を簡素化でき、さらに送電損失を
軽減することができるという効果がある。As described above, since the shunt reactor of the present invention is provided with a secondary winding for distribution voltage, it can be installed in a distribution substation without increasing the space compared to the conventional one. This has the effect of simplifying local equipment and further reducing power transmission losses.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は現在の電力系統図、第２図はその一部を示す詳
細系統図、第３図はその配電用変電所における系統図、
第４図はこの発明の一実施例の分路リアクトルの断面図
、第５図はその等価回路図、第６図は配電用変電所にお
ける系統図、第７図は他の実施例の単相用分路リアクト
ルの回路説明図、第８図はさらに他の実施例における３
相用分路リアクトルの回路説明図である。 １６’　、ｌ　６　ａ〜ｌ　６　ｃ、　１６’ａ　〜１
６’ｃ　−・・主巻線、１７．１７ａ〜１７ｃ・・・２
次巻線、１９・・・電圧稠整器 第４図 第５図 第６図 第７図 第８図Figure 1 is the current power system diagram, Figure 2 is a detailed diagram showing part of it, Figure 3 is the diagram of the distribution substation,
Fig. 4 is a sectional view of a shunt reactor according to an embodiment of the present invention, Fig. 5 is an equivalent circuit diagram thereof, Fig. 6 is a system diagram in a distribution substation, and Fig. 7 is a single-phase reactor of another embodiment. FIG. 8 is a circuit explanatory diagram of a shunt reactor for use in another embodiment.
It is a circuit explanatory diagram of a phase shunt reactor. 16', l6a~l6c, 16'a~1
6'c - Main winding, 17.17a to 17c...2
Next winding, 19... Voltage regulator Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8

Claims (1)

【特許請求の範囲】 ＋１１　主巻線と、この主巻線に対して配電電圧に相当
する巻数比をもつ変圧用２次巻線とを備えた分路リアク
トル。 （２）　前記主巻線は、負荷時の電圧調整器を有する特
許請求の範囲第（１１項記載の分路リアクトル。[Claims] +11 A shunt reactor comprising a main winding and a secondary transformer winding having a turns ratio corresponding to the distribution voltage with respect to the main winding. (2) The shunt reactor according to claim 11, wherein the main winding has a voltage regulator during load.