JPH01260368A - Loss measuring circuit for reactor - Google Patents

Loss measuring circuit for reactor

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Publication number
JPH01260368A
JPH01260368A JP8827188A JP8827188A JPH01260368A JP H01260368 A JPH01260368 A JP H01260368A JP 8827188 A JP8827188 A JP 8827188A JP 8827188 A JP8827188 A JP 8827188A JP H01260368 A JPH01260368 A JP H01260368A
Authority
JP
Japan
Prior art keywords
sample
reactor
voltage side
bridge circuit
circuit
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.)
Granted
Application number
JP8827188A
Other languages
Japanese (ja)
Other versions
JP2653823B2 (en
Inventor
Fuji Ogami
大上 富士
Yoshiaki Tachibana
立花 好章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8827188A priority Critical patent/JP2653823B2/en
Publication of JPH01260368A publication Critical patent/JPH01260368A/en
Application granted granted Critical
Publication of JP2653823B2 publication Critical patent/JP2653823B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Measurement Of Resistance Or Impedance (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE:To obtain a highly practical loss measuring circuit with a handy construction, by arranging two arms on the high voltage side of a bridge circuit to be made up of a sample as reactor and an accessory thereof. CONSTITUTION:Two arms on the high voltage side of a bridge circuit are made up of a self inductance portion 9 and a resistance portion 10 of a sample 1 as reactor and an electrostatic capacitance 11 and a resistance portion 12 of an accessory 1a thereof connected in parallel thereto. Two arms on the low voltage side of the bridge circuit are made up of a current transformer 3 and a mutual reactor 4 connected between the sample 1 and the ground, and a variable capacitor 5 and a variable resistor 6 connected together in parallel between the accessory 1a and the ground. An electric galvanometer 7 is connected between the two arms on the low voltage side of the bridge circuit and an AC power source 8 between the high voltage side and the ground. Thus, a highly practical loss measuring circuit can be obtained with a handy construction.

Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 この発明は、リアクトルの損失測定回路、特にリアクト
ルとしての試料およびその付属品を用いた損失測定回路
に関するものである。 〔従来の技術〕 第2図は従来の損失測定回路の一例を示す回路図であり
、図において(1)は図示のブリッジ回路の高電圧側の
2辺の内の1辺を構成するリアクトルとしての試料、(
9L(1o、)はこの試料(1)のそれぞし自己インダ
クタンス分および抵抗器、(2)はブリッジ回路の高゛
亀圧側の他の1辺を構成する無損失れだ変流器、(4)
はこの変流器(6)の2次側に接続された相互リアクト
ルであって、変流器(6)と共にブリッジ回路の低電圧
側の2辺中の1辺を構成する。 (5) 、 (6)は無損失高電圧コンデンサ(2)と
大地の間で互いに並列に接続されたそれぞれ可変コンデ
ンサ、可変抵抗器であって、ブリッジ回路の低電圧側の
他の1辺を構成する。(7)はブリッジ回路の低電圧側
の2辺すなわち相互リアクトル(4)の2次側と可変コ
ンデンサ(5)および可変抵抗器(6)の並列回路との
間に接続された検流計、(8)はブリッジ回路の高電圧
側と大地の間に接続された交流電源である。 従来の損失測定回路は上述したように構成され、交流電
源(8)からブリッジ回路へ電圧が印加されると、低電
圧側の2辺すなわち相互リアク)/I/(4102次側
と可変コンデンサ価)または可変抵抗器(6)とにそれ
ぞれ電圧e2と81とが発生する。それらの値は次式の
ように算出される。 ここで (E = Ep sinωt、ここでEpはEのピーク
値) CN:無損失高電圧コンデンサ(2)の静電容量04:
可変コンデンサ(5)の静電容量R4,二可変抵抗器(
6)の抵抗値 M:相互リアクトル(4)の相互インダクタンスn;変
流器(6)のOT比 IJx:試料(1)の自己インダクタンスRx:試料(
1)の抵抗値 検流計(7)が零の値となるように、すなわち、二。 と二2 が等しくなるように可変コンデンサ(5)と可
変抵抗器(6)を調整する。この状態がブリッジ回路の
平衡状態で、 ;=;2(3) の条件式が成立する点である。式tl) 、 (21お
よび(3)より試料(1)の定数Lx  および−の値
が次式で算出される。 式(4) 、 (slより試料(1)の総合インピーダ
ンス(zx)は次式で表わされる。 zx=lπJT罵ア・・・…・(6) 一方、試料(1)の損失(P工8)は ここで ■=試料(1)の電流 E:印加電圧(mta+の実効値の絶対値で表されるの
で、試料(1)の損失を算出できることになる。 〔発明が解決しようとする課題〕 従来の損失測定回路では、ブリッジ回路に無損失高電圧
コンデンサを使用しなげればならず、500 KVや1
000 KV級の試料になると損失測定回路の構成に絶
縁距離及びスペースの確保が必要となり、また損失測定
回路の構成が複雑になるなどの問題点があった。 この発明は、上述したような問題点を解決するためにな
されたもので、無損失高電圧コンデンサ等の高圧部分を
含まず、低電圧部分のみで構成し
[Industrial Application Field] The present invention relates to a loss measuring circuit for a reactor, and particularly to a loss measuring circuit using a sample as a reactor and its accessories. [Prior Art] Fig. 2 is a circuit diagram showing an example of a conventional loss measurement circuit. A sample of (
9L (1o,) is the self-inductance and resistor of this sample (1), (2) is the lossless current transformer that constitutes the other side on the high voltage side of the bridge circuit, ( 4)
is a mutual reactor connected to the secondary side of this current transformer (6), and together with the current transformer (6) constitutes one of the two sides on the low voltage side of the bridge circuit. (5) and (6) are a variable capacitor and a variable resistor, respectively, which are connected in parallel between the lossless high voltage capacitor (2) and the ground, and the other side of the low voltage side of the bridge circuit is Configure. (7) is a galvanometer connected between the two sides on the low voltage side of the bridge circuit, that is, the secondary side of the mutual reactor (4) and the parallel circuit of the variable capacitor (5) and the variable resistor (6); (8) is an AC power supply connected between the high voltage side of the bridge circuit and the ground. The conventional loss measurement circuit is configured as described above, and when voltage is applied from the AC power supply (8) to the bridge circuit, the two sides on the low voltage side, that is, mutual react)/I/(410 secondary side and variable capacitor value) ) or the variable resistor (6), voltages e2 and 81 are generated, respectively. These values are calculated as shown below. Here (E = Ep sinωt, where Ep is the peak value of E) CN: Capacitance of lossless high voltage capacitor (2) 04:
Capacitance R4 of variable capacitor (5), two variable resistors (
6) resistance value M: mutual inductance n of mutual reactor (4); OT ratio IJx of current transformer (6): self-inductance Rx of sample (1): sample (
1) so that the resistance value galvanometer (7) has a value of zero, that is, 2. Adjust the variable capacitor (5) and variable resistor (6) so that and 22 are equal. This state is the equilibrium state of the bridge circuit, and is the point at which the conditional expression ;=;2(3) holds true. From equations (tl), (21 and (3), the values of constants Lx and - for sample (1) are calculated using the following equations. From equations (4) and (sl), the total impedance (zx) of sample (1) is calculated as follows: It is expressed by the formula: zx = lπ Since it is expressed as the absolute value of the value, it is possible to calculate the loss of sample (1). [Problem to be solved by the invention] In the conventional loss measurement circuit, it is necessary to use a lossless high voltage capacitor in the bridge circuit. Must be 500 KV or 1
For samples of 000 KV class, it is necessary to ensure insulation distance and space in the configuration of the loss measurement circuit, and there are problems such as the configuration of the loss measurement circuit becomes complicated. This invention was made to solve the above-mentioned problems, and does not include high-voltage parts such as lossless high-voltage capacitors, but consists only of low-voltage parts.

【も試料の損失を測定できる損失測定回路を得ることを目的とする。 〔課題を解決するための手段〕[The purpose is also to obtain a loss measurement circuit that can measure the loss of a sample. [Means to solve the problem]

この発明に係るリアクトルの損失測定回路は、ブリッジ
回路の高電圧側の2辺を試料およびその付属品で構成し
たものである。 〔作 用〕 この発明においては、資料の2辺中靜゛−容蓋部の定数
は低電圧部と同様に既知とし、ブリッジのバランス条件
より資料の他の1辺であるリアクトルの定数な算出し、
更に、それを基にリアクト〃の損失を計算する。 〔実施例〕 第1図はこの発明の一実施例を示す回路図であり、(1
)及び(5)〜(10〕はsl図について説明したもの
と全く同じである。【1a】は試料(1)と並列に接続
されたその付属品例えばプツシフグであって、ブリッジ
回路の高電圧側の他の1辺を構成する。 u+tt(t2)は付属品(1a)のそれぞれ静電容量
、抵抗器である。 上述したように構成された損失測定回路においては、従
来回路の場曾と全く同様に電圧印加後、可変コンデンサ
(5)と可変抵抗器(6)を調整して検流計(7)が零
になるようにする。この時の’e1. 鶴、Lx。 Rx、zX、Plsの値は、従来回路の場合と同様の考
え方で、次のように導かれる。 81 = θ2elll#*@$6@’  (31Zx
=f石)Tππツー −−−−e  (6)上記式(7
)より試料(1)のリアクトルの損失が算定できること
になる。 〔発明の効果〕 この発明は、以上説明した通り、ブリッジ回路の高電圧
側を試料およびその付属品で構成したので、構成が簡単
で、安価であり、また実用性の高い損失測定回路が得ら
れるとい5効来を奏する。
The reactor loss measuring circuit according to the present invention is constructed by forming two sides of a bridge circuit on the high voltage side with a sample and its accessories. [Function] In this invention, the constants of the two sides of the material are known, like the low voltage part, and the constants of the reactor, which is the other side of the material, are calculated from the balance condition of the bridge. death,
Furthermore, the loss of React is calculated based on this. [Embodiment] FIG. 1 is a circuit diagram showing an embodiment of the present invention.
) and (5) to (10) are exactly the same as those explained for the sl diagram. [1a] is an accessory connected in parallel with the sample (1), such as a push puffer, and is connected to the high voltage of the bridge circuit. u+tt(t2) are the capacitance and resistor of accessory (1a), respectively.In the loss measurement circuit configured as described above, the loss measuring circuit is different from the conventional circuit. After applying voltage in exactly the same way, adjust the variable capacitor (5) and variable resistor (6) so that the galvanometer (7) becomes zero. At this time, 'e1. Tsuru, Lx. Rx, zX , Pls is derived as follows using the same concept as in the case of the conventional circuit: 81 = θ2ell#*@$6@' (31Zx
=f stone)Tππtwo -----e (6) Above formula (7
), the reactor loss of sample (1) can be calculated. [Effects of the Invention] As explained above, in this invention, the high voltage side of the bridge circuit is constructed of the sample and its accessories, so a loss measuring circuit that is simple in construction, inexpensive, and highly practical can be obtained. It has 5 effects when used.

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

第1図はこの発明の一実施例を示す回路図、第2図を工
従米の損失測定回路を示す回路図である。 図において、<1)は試料、(1aJは試料の付属品、
(9Jは試料の自己インダクタンス分、(10)は試料
の抵抗分、(11〕は付属品の静電容量、(12)は付
属品の抵抗分である。 なお、各図中、同一符号は同一または相当部分を示す。 12−付属品川島杭分 手続補正書 昭和63年10月21日
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a loss measuring circuit of the present invention. In the figure, <1) is the sample, (1aJ is the sample accessory,
(9J is the self-inductance of the sample, (10) is the resistance of the sample, (11) is the capacitance of accessories, and (12) is the resistance of accessories. In each figure, the same symbols are Indicates the same or equivalent part. 12 - Attachment Kawashima Kui minutes procedural amendment document October 21, 1988

Claims (1)

【特許請求の範囲】[Claims] ブリッジ回路によるリアクトルの損失測定回路において
、前記ブリッジ回路の高電圧側の2辺をそれぞれリアク
トルとしての試料およびその付属品で構成したことを特
徴とするリアクトルの損失測定回路。
1. A reactor loss measuring circuit using a bridge circuit, characterized in that two sides on the high voltage side of the bridge circuit are each configured with a sample as a reactor and its accessories.
JP8827188A 1988-04-12 1988-04-12 Reactor loss measurement circuit Expired - Lifetime JP2653823B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8827188A JP2653823B2 (en) 1988-04-12 1988-04-12 Reactor loss measurement circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8827188A JP2653823B2 (en) 1988-04-12 1988-04-12 Reactor loss measurement circuit

Publications (2)

Publication Number Publication Date
JPH01260368A true JPH01260368A (en) 1989-10-17
JP2653823B2 JP2653823B2 (en) 1997-09-17

Family

ID=13938232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8827188A Expired - Lifetime JP2653823B2 (en) 1988-04-12 1988-04-12 Reactor loss measurement circuit

Country Status (1)

Country Link
JP (1) JP2653823B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019027811A (en) * 2017-07-26 2019-02-21 川崎重工業株式会社 Device and method for reactor loss measurement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019027811A (en) * 2017-07-26 2019-02-21 川崎重工業株式会社 Device and method for reactor loss measurement

Also Published As

Publication number Publication date
JP2653823B2 (en) 1997-09-17

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