JP2663676B2 - Operation confirmation device for telemeter device for detecting field winding ground - Google Patents
Operation confirmation device for telemeter device for detecting field winding groundInfo
- Publication number
- JP2663676B2 JP2663676B2 JP9376890A JP9376890A JP2663676B2 JP 2663676 B2 JP2663676 B2 JP 2663676B2 JP 9376890 A JP9376890 A JP 9376890A JP 9376890 A JP9376890 A JP 9376890A JP 2663676 B2 JP2663676 B2 JP 2663676B2
- Authority
- JP
- Japan
- Prior art keywords
- field winding
- ground
- antenna
- voltage
- induction 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
Landscapes
- Synchronous Machinery (AREA)
Description
この発明は回転界磁型ブラシレス励磁方式同期機の回
転子に搭載される界磁巻線接地検出用テレメータ装置の
動作確認装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation confirmation device for a field winding ground detection telemeter device mounted on a rotor of a rotating field type brushless excitation type synchronous machine.
第２図は従来のブラシレス励磁方式同期機の界磁巻線
接地検出用テレメータ装置の結線図である。第２図にお
いて、交流励磁機１の電機子巻線２に誘起される交流電
圧は、整流器群３により直流電圧に変換され、ブラシレ
ス励磁方式同期機の回転界磁である界磁巻線４を励磁し
て対向する電機子4aに電圧を発生する。この界磁巻線４
の接地を検出する接地検出回路６は、回転子に搭載され
た直流電圧源7,検出抵抗８及び限流抵抗９とからなり、
この検出抵抗８に流れる電流値の大きさで界磁巻線４の
接地を検出する。界磁巻線４と大地電位５との間には常
に直流電圧源７が印加されている。界磁巻線４と直流電
圧源７との重畳電圧に対する電流閉路が出現し、接地電
流10が流れる。 この電流値に応じて検出抵抗８に電圧が発生し、検出
抵抗８の両端の発生電圧をFM送信回路11に入力させ、FM
送信回路11により搬送波が周波数変調され、送信アンテ
ナ12から電波として送信される。受信アンテナ13は、回
転界磁型同期機より離れた管理室にあり、ここで受信ア
ンテナ13で受信し、受信された信号は受信機14で復調さ
れ、元の電圧に復元された後、判定回路15により規定値
以上の電圧が生じていると判断されたときには受信機14
から警報を発する。 直流電圧源７は、図示されない固定した送信機から10
2K Hzの電波を回転子に取付けたピックアップに向かっ
て発信し、このピックアップに誘起された電圧を整流し
て電圧安定化回路により18Vに調整して供給し、一方電
子回路部品への電源は同じピックアップに誘起された電
圧を別の電圧安定化装置により5Vに変換して供給してい
る。従って第１図の界磁巻線接地検出用テレメータ装置
は、界磁巻線と軸間に常時印加する直流電圧源と、電子
回路部品へ供給する電源との２種の電源を必要とする。 第３図は他の従来例によるブラシレス励磁方式同期機
の界磁巻線接地検出用テレメータ装置の結線図である。
第３図は電源を１系統として小型化した界磁巻線接地検
出用テレメータ装置であり、検出抵抗８の両端に発生す
る電圧を入力させ定められた値に抑制した電圧を発生す
る電圧抑制回路16と、この電圧抑制回路16の出力で搬送
波を周波数変調して送信する送信機17とを設けた。第３
図の装置では界磁巻線が接地したとき流れる接地電流に
より検出抵抗８の両端に発生する電圧を送信機の作動電
圧とするので、送信機用電源を別に設ける必要がない。FIG. 2 is a connection diagram of a telemeter device for detecting the grounding of a field winding of a conventional brushless excitation type synchronous machine. In FIG. 2, an AC voltage induced in an armature winding 2 of an AC exciter 1 is converted into a DC voltage by a rectifier group 3 and is applied to a field winding 4 which is a rotating field of a brushless excitation type synchronous machine. It excites and generates a voltage at the armature 4a facing it. This field winding 4
The ground detection circuit 6 for detecting the ground of the DC voltage source 7, the detection resistor 8, and the current limiting resistor 9 mounted on the rotor,
The ground of the field winding 4 is detected based on the magnitude of the current flowing through the detection resistor 8. A DC voltage source 7 is always applied between the field winding 4 and the ground potential 5. A current closing circuit appears for the superimposed voltage between the field winding 4 and the DC voltage source 7, and the ground current 10 flows. A voltage is generated in the detection resistor 8 in accordance with the current value, and a voltage generated at both ends of the detection resistor 8 is input to the FM transmission circuit 11,
The carrier is frequency-modulated by the transmission circuit 11 and transmitted as radio waves from the transmission antenna 12. The receiving antenna 13 is located in a control room remote from the rotating field type synchronous machine, where the signal is received by the receiving antenna 13 and the received signal is demodulated by the receiver 14 and restored to the original voltage. When the circuit 15 determines that a voltage higher than the specified value is generated, the receiver 14
Alert from. DC voltage source 7 is connected to a fixed transmitter (not shown) by 10
A 2K Hz radio wave is transmitted to the pickup mounted on the rotor, the voltage induced in the pickup is rectified and adjusted to 18V by the voltage stabilization circuit, and the power to the electronic circuit components is the same. The voltage induced in the pickup is converted to 5V by another voltage stabilizer and supplied. Therefore, the telemeter device for detecting the grounding of the field winding shown in FIG. 1 requires two types of power sources: a DC voltage source constantly applied between the field winding and the shaft, and a power source supplied to electronic circuit components. FIG. 3 is a connection diagram of a telemeter device for detecting the grounding of a field winding of a brushless excitation type synchronous machine according to another conventional example.
FIG. 3 shows a telemeter device for detecting the grounding of a field winding which is miniaturized by using a single power supply, and a voltage suppressing circuit for inputting a voltage generated at both ends of a detecting resistor 8 and generating a voltage suppressed to a predetermined value. 16 and a transmitter 17 for frequency-modulating and transmitting a carrier with the output of the voltage suppression circuit 16. Third
In the device shown in the figure, the voltage generated at both ends of the detection resistor 8 by the ground current flowing when the field winding is grounded is used as the operating voltage of the transmitter, so that there is no need to provide a separate transmitter power supply.
従来のテレメータ装置では、FM送信回路11または送信
機17に設定電圧以上の電源が投入されたときにのみ信号
を発信し、界磁巻線の接地を受信機側に告げる。しか
し、送信機に故障が発生したときにも信号は発信され
ず、界磁巻線の接地が送信機の故障かの区別が付かない
という問題があつた。 この発明は、界磁巻線接地検出用テレメータ装置の送
信機が正常であることを確認するための動作確認装置を
提供することを目的とする。In the conventional telemeter device, a signal is transmitted only when the power of the set voltage or more is applied to the FM transmission circuit 11 or the transmitter 17, and the grounding of the field winding is notified to the receiver side. However, no signal is transmitted when a failure occurs in the transmitter, and it is not possible to distinguish whether the grounding of the field winding is a failure of the transmitter. SUMMARY OF THE INVENTION It is an object of the present invention to provide an operation check device for checking that a transmitter of a telemeter device for detecting a field winding ground is normal.
上記目的は、回転界磁型ブラシレス励磁方式同期機の
回転子に搭載された直流電圧源，検出抵抗及び源流抵抗
からなる接地検出回路と、前記同期機の外部に固定され
た誘導電源送信アンテナと、前記同期機の回転子に搭載
され前記誘導電源送信アンテナの送信電波を受信する誘
導電源受信アンテナと、この受信アンテナの出力を整流
して前記直流電圧源に定められた電源を供給する整流及
び電圧安定化装置とを備え、界磁巻線接地を非接触で検
出する界磁巻線接地検出用テレメータ装置において、前
記誘導電源受信アンテナに接続された周波数弁別器と、
この周波数弁別器の出力を入力させかつ前記界磁巻線に
結線された短絡路と大地間に直列に接続された継電器と
からなり、前記直流電圧源に供給する誘導電源とは異な
る定められた周波数の電波を前記誘導電源送信アンテナ
から発信して前記継電器を作動させ、前記テレメータ装
置の動作確認をすることによつて達成される。The object is to provide a ground detection circuit including a DC voltage source, a detection resistor, and a source resistance mounted on a rotor of a rotating field type brushless excitation type synchronous machine, and an induction power transmitting antenna fixed outside the synchronous machine. An induction power receiving antenna mounted on a rotor of the synchronous machine and receiving a transmission radio wave of the induction power transmission antenna, a rectifier for rectifying an output of the reception antenna and supplying a power supply determined to the DC voltage source; With a voltage stabilizing device, in a field winding ground detection telemeter device that detects the field winding ground in a non-contact manner, a frequency discriminator connected to the induction power receiving antenna,
The output of this frequency discriminator is input and consists of a short-circuit path connected to the field winding and a relay connected in series between the ground, and is different from the induction power supply to be supplied to the DC voltage source. This is achieved by transmitting a radio wave of a frequency from the induction power transmitting antenna to operate the relay and confirming the operation of the telemeter device.
この発明によれば、直流電圧源に供給する誘導電源と
は異なる定められた周波数の電波を誘導電源送信アンテ
ナから発信して周波数弁別器でこの電波を弁別し、短絡
路と大地間に接続された継電器を作動させ、この継電器
によつて界磁巻線と大地間を短絡することにより人為的
に接地させ、検出抵抗の両端に電圧を発生させることに
より接地検出信号を発生させて送信機の動作を確認でき
る。According to the present invention, a radio wave having a predetermined frequency different from that of the induction power supply to be supplied to the DC voltage source is transmitted from the induction power transmission antenna, the radio wave is discriminated by the frequency discriminator, and the radio wave is connected between the short circuit and the ground. The relay is actuated, and the relay is short-circuited between the field winding and the ground to be artificially grounded, and a voltage is generated at both ends of the detection resistor to generate a ground detection signal, thereby generating a ground detection signal. Operation can be confirmed.
以下図面に基づいてこの発明の実施例を説明する。第
１図はこの発明の実施例による動作確認装置を備えた界
磁巻線接地検出用テレメータ装置の結線図である。第１
図において第２図及び第３図と同じ部位は同じ番号を付
している。第１図において、交流励磁機１の電機子巻線
２に誘起される交流電圧は、整流器群３により直流電圧
に変換され、ブラシレス励磁方式同期機の回転界磁であ
る界磁巻線４を励磁して、対向する電機子4aに電圧を発
生する。この界磁巻線４の接地を検出する接地検出回路
６は、回転子に搭載された直流電圧源7,検出抵抗８及び
限流抵抗９とからなる。 直流電圧源７は固定した誘導電源送信アンテナ18から
102K Hzの電波を、回転子に取付けた回転しているピッ
クアップに向かって発信し、このピックアップに誘起さ
れた電圧を整流及び電圧安定化装置20により18Vに調整
して供給している。界磁巻線４に接地が生じると、界磁
電圧と直流電圧源７との重畳電圧に対する電流閉路が出
現し、接地電流が流れる。接地電流により検出抵抗８の
両端に発生する電圧を入力させ、定められた値に抑制し
た電圧を電圧抑制回路16から発生させ、この電圧抑制回
路16の出力を送信機17に入力させ搬送波を周波数変調し
て送信アンテナ12から送信する。この送信された電波を
受信アンテナ13で受信し、受信された信号を受信機14で
復調し、元の電圧に復元された後、判定回路15により規
定値と比較され、規定値以上の電圧が生じていると判断
されたときは、受信機14から警報を出す。 この発明による動作確認装置は、誘導電源受信アンテ
ナ19に接続された周波数弁別器21と、この周波数弁別器
21の出力を入力させてかつ界磁巻線４に結線された短絡
路22と大地電位５との間に直列に接続された継電器23と
を設けた。整流及び電圧安定化装置20と周波数弁別器21
とは、誘導電源送信アンテナに対し並列に接続されてい
る。 テレメータ装置の動作を確認するときは、直流電圧源
７に供給する誘導電源とは異なる定められた周波数の電
波を誘導電源送信アンテナ18から発信し、この定められ
た周波数を周波数弁別器21で弁別して継電器23を作動さ
せ、人為的に接地を発生させ、検出抵抗８の両端に電圧
を発生させ、送信アンテナ12から接地発生を告げる信号
を意図的に出させて送信機17の健全性をチエックする。
この動作確認は定期的に行う。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a connection diagram of a field winding ground detection telemeter device provided with an operation check device according to an embodiment of the present invention. First
In the figure, the same parts as those in FIGS. 2 and 3 are denoted by the same reference numerals. In FIG. 1, an AC voltage induced in an armature winding 2 of an AC exciter 1 is converted by a rectifier group 3 into a DC voltage, and is applied to a field winding 4 which is a rotating field of a brushless excitation type synchronous machine. It excites and generates a voltage on the armature 4a facing it. The ground detection circuit 6 for detecting the ground of the field winding 4 includes a DC voltage source 7, a detection resistor 8, and a current limiting resistor 9 mounted on the rotor. DC voltage source 7 is from a fixed induction power transmission antenna 18
A 102 KHz radio wave is transmitted toward a rotating pickup mounted on the rotor, and the voltage induced in the pickup is adjusted to 18 V by the rectifier and voltage stabilizing device 20 and supplied. When the field winding 4 is grounded, a current closing circuit for a superimposed voltage of the field voltage and the DC voltage source 7 appears, and a ground current flows. A voltage generated at both ends of the detection resistor 8 due to the ground current is input, a voltage suppressed to a predetermined value is generated from the voltage suppression circuit 16, an output of the voltage suppression circuit 16 is input to the transmitter 17, and the carrier is changed in frequency. The signal is modulated and transmitted from the transmission antenna 12. The transmitted radio wave is received by the receiving antenna 13, the received signal is demodulated by the receiver 14, and is restored to the original voltage.Then, the judgment circuit 15 compares the signal with a specified value. When it is determined that the error has occurred, the receiver 14 issues an alarm. An operation check device according to the present invention includes a frequency discriminator 21 connected to an induction power receiving antenna 19, and a frequency discriminator
A relay 23 is connected in series between a short circuit 22 connected to the field winding 4 and an earth potential 5 to which an output of the field winding 4 is input. Rectifier and voltage stabilizer 20 and frequency discriminator 21
Is connected in parallel to the induction power transmission antenna. When confirming the operation of the telemeter device, a radio wave having a predetermined frequency different from that of the induction power supplied to the DC voltage source 7 is transmitted from the induction power transmission antenna 18, and the predetermined frequency is discriminated by the frequency discriminator 21. Separately, the relay 23 is operated to artificially generate a ground, a voltage is generated at both ends of the detection resistor 8, and a signal indicating the occurrence of the ground is intentionally output from the transmitting antenna 12 to check the soundness of the transmitter 17. I do.
This operation check is performed periodically.
この発明によれは、外部から供給する誘導電源の周波
数とは別な定められた周波数の電波を発信させて、回転
子上に取付けた継電器を動作させ、界磁巻線と大地電位
とを人為的に短絡させ、接地検出信号を発信させて送信
機が健全に動作していることを確認する。従ってこの動
作確認装置によって接地検出信号が発信されないとき
は、送信機の故障と判断して送信機を修理するので、界
磁巻線接地検出用テレメータ装置を常に正常の状態に保
持することができる。According to the present invention, a radio wave having a predetermined frequency different from the frequency of the induction power supply supplied from the outside is transmitted, the relay mounted on the rotor is operated, and the field winding and the ground potential are artificially changed. Short-circuit and transmit the ground detection signal to confirm that the transmitter is operating properly. Therefore, when the grounding detection signal is not transmitted by the operation check device, the transmitter is determined to be faulty and the transmitter is repaired, so that the telemeter device for field winding grounding detection can always be kept in a normal state. .
第１図はこの発明の実施例による動作確認装置を備えた
界磁巻線接地検出用テレメータ装置の結線図、第２図は
従来例による界磁巻線接地検出用テレメータ装置の結線
図、第３図は他の従来例による界磁巻線接地検出用テレ
メータ装置の結線図である。 4:界磁巻線、5:大地電位、6:接地検出回路、7:直流電圧
源、8:検出抵抗、9:限流抵抗、10:接地電流、12:送信ア
ンテナ、13:受信アンテナ、14:受信機、15:判定回路、1
6:電圧抑制回路、17:送信機、18:誘導電源送信アンテ
ナ、19:誘導電源受信アンテナ、20:整流及び電圧安定化
装置、21:周波数弁別器、22:短絡路、23:継電器。FIG. 1 is a connection diagram of a field winding ground detection telemeter device provided with an operation check device according to an embodiment of the present invention, FIG. 2 is a connection diagram of a conventional field winding ground detection telemeter device, and FIG. FIG. 3 is a connection diagram of another conventional telemeter device for detecting the grounding of a field winding. 4: field winding, 5: ground potential, 6: ground detection circuit, 7: DC voltage source, 8: detection resistance, 9: current limiting resistance, 10: ground current, 12: transmission antenna, 13: reception antenna, 14: Receiver, 15: Judgment circuit, 1
6: voltage suppression circuit, 17: transmitter, 18: induction power transmission antenna, 19: induction power reception antenna, 20: rectification and voltage stabilizer, 21: frequency discriminator, 22: short circuit, 23: relay.
Claims (1)
転子に搭載された直流電圧源，検出抵抗及び限流抵抗か
らなる接地検出回路と、前記同期機の外部に固定された
誘導電源送信アンテナと、前記同期機の回転子に搭載さ
れ前記誘導電源送信アンテナからの送信電波を受信する
誘導電源受信アンテナと、この受信アンテナの出力を整
流して前記直流電圧源に定められた電源を供給する整流
及び電圧安定化装置とを備え、界磁巻線の接地を非接触
で検出する界磁巻線接地検出用テレメータ装置におい
て、前記誘導電源受信アンテナに接続された周波数弁別
器と、この周波数弁別器の出力を入力させかつ前記界磁
巻線に結線された短絡路と大地間に直列に接続された継
電器とからなり、前記直流電圧源に供給する誘導電源と
は異なる定められた周波数の電波を前記誘導電源送信ア
ンテナから発信して前記継電器を作動させ、前記テレメ
ータ装置の動作確認をすることを特徴とする界磁巻線接
地検出用テレメータ装置の動作確認装置。1. A ground detection circuit comprising a DC voltage source, a detection resistor, and a current limiting resistor mounted on a rotor of a rotating field type brushless excitation type synchronous machine, and an induction power transmission fixed outside the synchronous machine. An antenna, an induction power receiving antenna mounted on a rotor of the synchronous machine for receiving a transmission radio wave from the induction power transmission antenna, and rectifying an output of the reception antenna to supply a predetermined power to the DC voltage source A field discriminator connected to the inductive power receiving antenna, comprising: a frequency discriminator connected to the induction power receiving antenna; The output of the discriminator is input and comprises a short-circuit path connected to the field winding and a relay connected in series between the ground and a specified power supply different from the induction power supply supplied to the DC voltage source. And transmitting a radio wave wave number from said inductive power supply transmission antenna actuates the relay, the operation check device of the telemeter field winding ground detector telemeter system, which comprises an operation confirmation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9376890A JP2663676B2 (en) | 1990-04-09 | 1990-04-09 | Operation confirmation device for telemeter device for detecting field winding ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9376890A JP2663676B2 (en) | 1990-04-09 | 1990-04-09 | Operation confirmation device for telemeter device for detecting field winding ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03293952A JPH03293952A (en) | 1991-12-25 |
| JP2663676B2 true JP2663676B2 (en) | 1997-10-15 |
Family
ID=14091608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9376890A Expired - Lifetime JP2663676B2 (en) | 1990-04-09 | 1990-04-09 | Operation confirmation device for telemeter device for detecting field winding ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2663676B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61127580U (en) * | 1985-01-30 | 1986-08-11 | ||
| JPH0284279U (en) * | 1988-12-16 | 1990-06-29 |
-
1990
- 1990-04-09 JP JP9376890A patent/JP2663676B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03293952A (en) | 1991-12-25 |
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