JPS62107645A - Monitor signal transmission - Google Patents

Monitor signal transmission

Info

Publication number
JPS62107645A
JPS62107645A JP24689785A JP24689785A JPS62107645A JP S62107645 A JPS62107645 A JP S62107645A JP 24689785 A JP24689785 A JP 24689785A JP 24689785 A JP24689785 A JP 24689785A JP S62107645 A JPS62107645 A JP S62107645A
Authority
JP
Japan
Prior art keywords
low
line
frequency signal
grounding
signal
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.)
Pending
Application number
JP24689785A
Other languages
Japanese (ja)
Inventor
松野 辰治
野村 義夫
俊 木下
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.)
Toyo Communication Equipment Co Ltd
Original Assignee
Toyo Communication Equipment Co Ltd
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 Toyo Communication Equipment Co Ltd filed Critical Toyo Communication Equipment Co Ltd
Priority to JP24689785A priority Critical patent/JPS62107645A/en
Publication of JPS62107645A publication Critical patent/JPS62107645A/en
Pending legal-status Critical Current

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Landscapes

  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 (#猫との分野) 本発明は電路のe碌状況全監視して得られる警報信号の
伝送方法に関する。
DETAILED DESCRIPTION OF THE INVENTION (#Field of Cats) The present invention relates to a method of transmitting an alarm signal obtained by fully monitoring the e-stable status of an electric line.

(従来技術) 一般に高圧電気を受電し低圧の電気に変成する受電変圧
器の2次側低圧電路の絶縁状聾を活線状態のまま監視或
は受11i変圧器の異常温度上昇等の監視を行い、電気
事故全未然に防ぎ安全な電力供給を行うことが行われて
いる。一方。
(Prior art) In general, monitoring the insulation of the secondary low-voltage line of the receiving transformer, which receives high-voltage electricity and converting it into low-voltage electricity, while it is live, or monitoring abnormal temperature rises in the receiving 11i transformer. This is done to prevent any electrical accidents and provide a safe power supply. on the other hand.

いれらの監視装置は受′fLf圧器が設置されている受
電室に設けられるが、受電室には一役に人が常駐せず、
従って監視装置によって検出した結果に基〈警報信号等
を人が常駐する償□□□所或は統制所等へ伝送する必要
がある。
These monitoring devices are installed in the power receiving room where the receiver'fLf pressure regulator is installed, but no one is permanently stationed in the power receiving room.
Therefore, it is necessary to transmit an alarm signal or the like to a compensation center or control center where a person is permanently stationed based on the results detected by the monitoring device.

従来、この警報信号の伝送には9例えば上記変圧器の中
、電灯用変圧器(単相三線電路)の8g2種接地工事の
接地線を介して伝送すべき複数の警報信号にて変調され
た低周波信号全印加し、事務所に設置された受信器では
、上記単相三線電路の接地相と箪3種接地工事線間に誘
起する前記低周波信号を検出して復調し、vll倍信号
伝送されているが否か判定していた。
Conventionally, this alarm signal was transmitted by modulating multiple alarm signals to be transmitted through the grounding wire of the 8g type 2 grounding work of the lighting transformer (single-phase three-wire electrical circuit) in the above-mentioned transformer. All low frequency signals are applied, and a receiver installed in the office detects and demodulates the low frequency signal induced between the ground phase of the single-phase three-wire electric line and the 3rd grade ground construction line, and generates the vlll multiplied signal. It was determined whether the data was being transmitted or not.

(発明が解決しようとする問題点) しかしながら、上述の従来の警報信号伝送方法において
は警報信号にて変調された低周波信号の周波数として一
般に1〜1QKHz  程度の周波数が利用されている
。これは周波数が高くなるほど、を路と対地間の静電容
量により受信点において信号が減衰してしまい正しく信
号を受信できない場合があり、一方散10 Hz程度と
すると、第2塊接地線に印加する注入トランスが大きく
なり不経済となるためである。1〜10KHz  の低
周波信号を電灯用電路に第2種接地線を介して印加した
場合、を路から低周波信号が輻射され電灯用電路に接続
される負荷@器の中、特に上述した1〜l0KI−12
帯を含む音声帯域を扱う信号としたオーディオ機器、放
送機器、m話機器等へ、上記低周波信号が廻り込みこれ
らの負vr機器に雑音として混入するという問題があっ
た。
(Problems to be Solved by the Invention) However, in the conventional alarm signal transmission method described above, a frequency of about 1 to 1 QKHz is generally used as the frequency of the low frequency signal modulated by the alarm signal. This is because the higher the frequency, the more the signal is attenuated at the receiving point due to the capacitance between the ground and the ground, and the signal may not be received correctly. This is because the injection transformer to be used becomes large and uneconomical. When a low-frequency signal of 1 to 10 KHz is applied to a lighting circuit through a type 2 grounding wire, the low-frequency signal is radiated from the circuit. ~l0KI-12
There is a problem in that the low frequency signal goes around to audio equipment, broadcasting equipment, m-talk equipment, etc. that handle signals that handle audio bands including high frequency bands, and mixes into these negative VR equipment as noise.

(問題全解決するための手段及び作用)本発明は、この
ような従来の方法の問題点を解決するためになされたも
ので、警報信号にてf−された低周波信号を電灯用変厘
器の第2種接地線に印加することを避け1代りに動力用
変圧器(3相3線電路)の第2種接地線に印加する手段
を用いて、上記負荷機器の接続される電灯用電路に上記
低周波信号が重畳されないようにし、もって負荷機器へ
前記低周波信号が廻り込むのを防止した監視信号伝送方
法を提供するものである。このように構成しかつ受信点
において動力′電路の接地相と工3種接地間に誘起する
低周波信号を検出、復〜肩すれば容易に信号伝送が可能
となり又、動力電路と電灯′電路が近接する場合であっ
ても動力電路に印加した低周波信号が電灯電路へ誘導す
る信号レベルは微少であるから上記の如き負荷機器への
影響ばはマ無視しうるものとなる。
(Means and operations for solving all the problems) The present invention was made to solve the problems of the conventional method as described above. By using means for applying voltage to the second type grounding wire of the power transformer (three-phase three-wire electric circuit) instead of applying it to the second kind grounding wire of the electric lamp to which the above-mentioned load equipment is connected. The present invention provides a monitoring signal transmission method that prevents the low frequency signal from being superimposed on the electric path, thereby preventing the low frequency signal from going around to load equipment. With this configuration, signal transmission is easily possible by detecting and reversing the low frequency signal induced between the ground phase of the power line and the class 3 engineering ground at the receiving point. Even if they are close to each other, the signal level at which the low frequency signal applied to the power line leads to the lighting line is so small that the effect on the load equipment as described above can be ignored.

(実施例) 以下本発明を図示した実施例に基いて詳細に説明する。(Example) The present invention will be described in detail below based on illustrated embodiments.

第1図は本発明の1実施例?示すブロック図である。同
図において、Tzは高圧電気5KVを三相三@(200
V)の動力用電路に変成する変圧器を示し、2次電路の
3は筆2種の接地工事の接地@10で接地点E2に接地
されている。
Is Fig. 1 an embodiment of the present invention? FIG. In the same figure, Tz is a three-phase three @ (200
The transformer transformed into the power line V) is shown, and the secondary line 3 is grounded to the grounding point E2 with the ground @10 of the second type of grounding work.

またTzは高圧電気5KV2単相三線(100/200
V)の電灯用電路に変成するための変圧器であす、変圧
器l112の2次電路5は第2種接地工事の接地線11
を介して接地点E2に接地されている。
In addition, Tz is high-voltage electricity 5KV2 single-phase three-wire (100/200
V) is a transformer for converting into a lighting circuit.The secondary circuit 5 of the transformer l112 is the grounding wire 11 of the second type grounding work.
It is grounded to the ground point E2 via.

変圧器T+ 、Tzの付近に接地され図示を省略した伺
等かの手段によって絶縁監視を行う監視装置9が発生す
る3報償号全事務室等に接地した警報信号受信装置20
に伝送する場合を示している。
The alarm signal receiving device 20 is grounded near the transformers T+ and Tz and is grounded in all offices, etc., where the monitoring device 9 which monitors insulation by some means (not shown) is generated.
This shows the case of transmission to .

先ず前記監視装置から出力される警報信号には正常、注
意、〜戒の3種類があるとし、「正常Jは絶縁状態が正
常であること音叉2「注意Jは絶縁劣化の兆候を示すも
のであり、かつ「警戒」は絶縁劣化し竜険な状態にある
ことを夫々を示すものとする。この実施例はこれら複数
の信号中のいずれか■つを伝送するもので、異常がない
ときは[正常Jの信号が常時又は間欠的に伝送されるも
のとする。送信部8は上記3種の信号に対し例えばそれ
ぞれ個有の周波数f1..f2及びf3の低周波全発生
し、これを接−地線10に結合せしめたトランス8を介
して接地線10に印加することにより動力電路に低周波
信号が重畳される。
First, it is assumed that there are three types of alarm signals output from the monitoring device: normal, caution, and warning. Yes, and "Warning" indicates that the insulation has deteriorated and is in a critical condition. In this embodiment, any one of these plurality of signals is transmitted, and when there is no abnormality, the normal J signal is transmitted constantly or intermittently. The transmitter 8 transmits, for example, respective unique frequencies f1 to the above three types of signals. .. The low frequency signals f2 and f3 are all generated and applied to the ground line 10 via the transformer 8 coupled to the ground line 10, thereby superimposing the low frequency signal on the power line.

一方、f#1記−報償号受信装置15においては動力電
路の接地相3と第3種接地工事の接地線14(−役大地
でもよい)との間に誘起する前述の低周波信号をコンデ
ンサ13を介して受信回路の15に導出する。この受信
回路15けその入力インピーダンスが高いものとしこれ
を接続する′6路への影響を与えないようにすると共に
前記電路3全介して検出する周波数f1.f=及びf3
の有無に対応して「正常」、「注意」、「警戒」の夫々
3つの警報信号(P)全出力する如くしたものである。
On the other hand, in the compensation signal receiving device 15 described in f#1, the above-mentioned low frequency signal induced between the ground phase 3 of the power line and the grounding wire 14 of the third type grounding work (- ground may also be used) is transferred to the capacitor. 13 to the receiving circuit 15. The input impedance of this receiving circuit 15 is high so that it does not affect the line '6 connecting it, and the frequency f1. f=and f3
All three alarm signals (P) of ``normal'', ``caution'', and ``warning'' are output in response to the presence or absence of the alarm.

なおコツプ/すCはこの′電路をメガ−等で絶縁検査す
るときの便全考えた直流阻止用部品である。電灯電路4
.6に接続された線路30.40は受信]回路に供給す
る電源(100V)である。
Incidentally, the tip/screw is a direct current blocking component designed to be useful when inspecting the insulation of this electrical circuit with a megger or the like. Electric light circuit 4
.. Lines 30 and 40 connected to 6 are power supplies (100 V) that supply the receiving circuit.

(発明の効果) 上記構成の如くすることによl:1.71!灯電路には
低周波信号が印加されないため、電灯電路(ACloo
V)に接続されるオーディオ機器等への低周波信号の廻
り込みがなくなり、オーディオ機器等への障害音さける
ことができるため。
(Effect of the invention) By having the above configuration, l:1.71! Since no low frequency signals are applied to the light line, the light line (ACloo
This is because low-frequency signals do not go around to the audio equipment, etc. connected to the V), and noise that interferes with the audio equipment, etc. can be avoided.

安定な警報信号を実現する上で効果をもたらすものであ
る。
This is effective in realizing a stable alarm signal.

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

at図は本発明の一実施例を示すブロック図T1・・・
・・・・・・動力用受電変圧器(3相3線)。 ′1゛2・・・・・・・・電灯用受電変圧器(単相3線
)。 1.2,4.5・・・・・・・非接地電路、  3,6
・・・・・・・・・接地電路、   10.11・・・
・・・・・・駆2種接地工事接地線、  9・・・・・
・・・・監視装置、  8・・・・・・・・−送信部、
  20 ・・・・・・・受信装置、  15・・・・
・・・・・受信回路。 第 / 回
The at diagram is a block diagram T1 showing an embodiment of the present invention.
...Power receiving transformer (3-phase, 3-wire). '1゛2......Power receiving transformer for electric lights (single phase 3 wire). 1.2, 4.5... Ungrounded electrical circuit, 3, 6
......Grounding circuit, 10.11...
・・・・・・Driving class 2 grounding work grounding wire, 9・・・・・・
... Monitoring device, 8 ......- Transmission section,
20...Receiving device, 15...
...Reception circuit. th/time

Claims (1)

【特許請求の範囲】[Claims] 高圧の電気を低圧の電気に変成する動力用変圧器の第2
種接地工事の接地線を介して動力用低圧2次電路に、絶
縁監視装置等から得る伝送すべき警報信号等で変調した
低周波信号を印加すると共に、前記電路の延長上におい
て前記第2種接地工事のなされている低圧電路の接地電
路と大地との間に誘起する前記低周波信号を検出して復
調して前記伝送された警報信号を導出することによって
、高圧の電気を低圧の電気に変成する電灯用変圧器の2
次側電路に負荷接続される機器に上記低周波信号が廻り
込んで障害を起こすことのないようにしたことを特徴と
する監視信号伝送方法。
The second power transformer transforms high-voltage electricity into low-voltage electricity.
A low-frequency signal modulated by an alarm signal to be transmitted obtained from an insulation monitoring device, etc. is applied to the power low-voltage secondary power line through the grounding wire of the type 2 grounding work, and the second type By detecting and demodulating the low-frequency signal induced between the earth and the grounding line of a low-voltage line that has been grounded, high-voltage electricity is converted to low-voltage electricity. Transforming electric light transformer 2
A method for transmitting a supervisory signal, characterized in that the low-frequency signal does not enter equipment connected to the next-side electric circuit as a load and cause trouble.
JP24689785A 1985-11-01 1985-11-01 Monitor signal transmission Pending JPS62107645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24689785A JPS62107645A (en) 1985-11-01 1985-11-01 Monitor signal transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24689785A JPS62107645A (en) 1985-11-01 1985-11-01 Monitor signal transmission

Publications (1)

Publication Number Publication Date
JPS62107645A true JPS62107645A (en) 1987-05-19

Family

ID=17155366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24689785A Pending JPS62107645A (en) 1985-11-01 1985-11-01 Monitor signal transmission

Country Status (1)

Country Link
JP (1) JPS62107645A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176415A (en) * 1984-02-20 1985-09-10 東洋通信機株式会社 Alarm signal transmitting method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176415A (en) * 1984-02-20 1985-09-10 東洋通信機株式会社 Alarm signal transmitting method

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