.替換 J284741 九、發明說明： 【發明所屬之技術領域】 雷於t明係有關於—種使用音射原理的簡易型部分放 種麵音射錢親比㈣後所產 =:號傳送給單晶片，同時使用單晶片内部的 :欠數ί判斷的次數，以藉由計數部分放電的 備是否需要維修之使用音射原理的簡 易型部分放電檢測器的創新設計。 【先前技術】 按，目前台灣的產業界對電力品質的要求越來越 以担丄台電為了提高輸電效率，降低線路的阻抗，常 ^向輸電壓來傳輪電力，使得工薇使用的變壓器與 綾铋,緣開關(Gas lnsuiated Switchgear，⑽的絕 緣刚高的電氣應力。當絕緣材料發生絕 中^時’可能導致變壓器故障或爆炸而使電力 害，，對工廠安全與生產線效率造成無法預期的傷 猫所以工業界與各研究單位對電力設備的維護與故 預得的診斷技術越來越重視。 方、、而目刖已貫際應用於各電力設備之部分放電檢測 非ir分為部分放電檢測之電氣法、部分放電檢測之 、氮法’以下針對這兩種方式加以說明之。 L部分放電檢測之電氣法： 係將部分放電的脈波電流自檢測電路中檢出的 方决，此法容易進行定量之測試，並具有高的靈敏 ί^〇 ! >y 度；其檢測電路一般肴兩種:一是使用耦合電容， 一是使用羅式線圈： (1) 利用耦合電容的分壓與濾波的特性，將耦合電容 並接到電力設備的局壓側’利用分壓與滤波原 理，取出部分放電的脈波電流信號，此信號的頻 率分佈都在5 MHz以上，所以耦合電容後端的處 理電腦成本很高，一般應用在設備出廠時必經的 檢驗規範，無法應用於工業界線上（on line)檢 測。 (2) 線上（on line)檢測常使用羅式線圈。當部分放 電產生時，電力設備的接地線會有部分放電的脈 波電流流動，羅式線圈可從接地線感應此脈波電 流，然而此電流信號頻率分佈很高，約在數MHz 〜數十MHz，所以其後端的處理電腦成本更高， 更重要的是一般工業界接地問題複雜，各種干擾 信號常常淹沒部分放電信號，故此方式必須有設 計更完善的濾波器，或更複雜的軟體濾波處理， 當然相對成本更高。 2.部分放電檢測之非電氣法： 部分放電的非電檢測法，包括聲學、光學等方 (1)聲學檢測法： (a) 超音波麥克風：當部分放電源是在空氣中， 如電暈現象，此時部分放電產生的超音波藉 由空氣介質傳播，利用超音波麥克風很容易 找出放電源，但是如果部分放電源是在設備 的内部介質，如油浸式變壓器的絕緣油、模 鑄型變壓器的樹脂、氣體絕緣開關的SF6(六 氟化硫），這些介質都與空氣隔離，放電的音 波信號要由這些介質傳到空氣的機會微乎其 微，所以有關内部的放電就必須使用音射感 測器。 (b) 音射感測器：當内部的部分放電產生時，部 分放電是一種類似脈衝的現象，它會在介質 内部產生機械壓力波，此有如聲音放射狀態 的情形，可能是由於材料内部分子和鄰近結 構中的分子碰撞所產生的現象，形成一個音 源放射出音波，此音波會在設備内部四處傳 播，其傳播方式請參考第一圖，此時音波是 否會由設備内部的介質傳到空氣介質？這必 須考量兩種介質的音阻抗，一般空氣的音阻 抗與設備内部介質的音阻抗差距很大，所以 設備内部介質的音波不可能藉由空氣傳出， 所以使用超音波麥克風要量測内部的音源是 十分困難。 而音射法（Acoustic Emission Method) 則使用AE (音射）感測器（8 1 )緊貼在設 備（8 2 )表面，並利用ae感測器（8 1 ) 内的壓電材料將機械壓力波轉換成電的音射 信號，如第一圖所示，並經由前級放大器（8 3)放大音射信號，由音射法所得到的音波 信號其頻率分佈約在2〇 kHz〜80 kHz之間，比 起其他方法所須處理的頻率最低，所以在成 本上最具優勢。 (2) 視覺或光學檢測： 當電暈在電力設備形成時，利用放電造成設 備表面溫度上升的原理，可使用紅外線熱顯儀尋 找熱點；或利用尋找電暈造成氣體電離後放射之 光譜的特性，可使用紫外線放電檢測的設備進行 檢驗，此兩種方式所須設備的價格都在百萬以 上，而且它們都只能做表面電暈的檢測，對於内 部放電與被遮蔽處則是最大的盲點。 (3) 油中溶解氣體的分析法： 1284741 设f Μ，》日修(更}正替換员 τη ΛΊΤΠ-—ir~! ww··β»v»TI*VT1 iminmeiXi»^mrmf mmmmwmmma. 使用絕緣油的電氣設備，在某些情況下可以 用分析油中溶解氣體的成分和含量來檢測是否 存在部分放電。部分放電產生的氣體在油中的溶 解和累積是一個長時間的過程，可在一段時間内 進行多次取樣監測或連續監測，這種方法可在設 備不停電狀態下，取油樣品進行測量，其適用於 運行中的設備檢測，但是檢驗結果須經精密的化 • 學分析，無法立刻得知結果，而且分析設備十分 昂貴，必須定時校正，再者此方法只適用使用絕 緣油的電力設備，如氣體絕緣開關與模鑄型變壓 器就無法使用。 另外，目前一般部分放電檢測器的設計原理係如 第二圖所示，此部分放電檢測器之系統主機（9 1 ) 須要高速的CPU (中央處理單元）、大量的記憶體與硬 •碟，且其 A/D 轉換器（Analog/Digital) ( 9 2 ) —般 為多通道（multi-channel)的設計，所以A/D轉換器利 用分時工作（time sharing)的原理，將此通道的類比 信號轉換成大量的數位資料，送入主控電腦的記憶 體，記憶體的容量必須很大，此時CPU隨即做十分繁 重的分析與辨識工作，當分析與辨識工作完成，又必 須將大量資料回存硬碟，所以處理一個通道花費的時Replacement J284741 IX. Invention Description: [Technical field of invention] Ray Yut is related to the simple part of the use of the principle of sound emission, the sound of the face, the sound of the money, the ratio of the money (the fourth), the production of the number: The wafer, while using the internal number of the single wafer: the number of times of the judgment, is an innovative design of a simple partial discharge detector using the principle of sound emission by counting whether the partial discharge is in need of maintenance. [Prior Art] According to the current Taiwanese industry, the requirements for power quality are increasingly responsible for the power transmission of Taipower in order to improve the transmission efficiency, reduce the impedance of the line, and often transmit power to the voltage to make the transformers used by Gongwei.绫铋, the edge switch (Gas lnsuiated Switchgear, (10) the insulation of the high electrical stress. When the insulation material occurs in the middle of the ^ can cause transformer failure or explosion and power damage, unpredictable for plant safety and production line efficiency Injury of cats, the industry and various research units have paid more and more attention to the maintenance of electrical equipment and the diagnostic techniques that have been acquired. Fang, and have witnessed the partial discharge detection of various electrical equipment, non-ir is divided into partial discharges. The electrical method of detection, the partial discharge detection, and the nitrogen method are described below for the two methods. The electrical method of the L partial discharge detection is: the method of detecting the partial discharge pulse current from the detection circuit. The method is easy to perform quantitative testing, and has a high sensitivity & & >gt; y degrees; its detection circuit is generally two kinds of food: one is the use of coupling capacitors, one The use of the Luo coil: (1) using the coupling capacitor's voltage division and filtering characteristics, the coupling capacitor is connected to the pressure side of the power equipment 'utilizing the partial pressure and filtering principle, taking out the partial discharge pulse current signal, this The frequency distribution of the signal is above 5 MHz, so the processing computer at the back end of the coupling capacitor is very expensive, and it is generally applied to the inspection specifications that must pass the equipment when it leaves the factory. It cannot be applied to the on-line inspection. (2) Online ( On line detection often uses a Luo coil. When a partial discharge occurs, the ground line of the power equipment will have a partially discharged pulse current flowing, and the Luo coil can sense the pulse current from the ground line. However, the current signal frequency distribution Very high, about several MHz ~ tens of MHz, so the cost of the processing computer at the back end is higher, more importantly, the grounding problem of the general industrial industry is complicated, and various interference signals often flood part of the discharge signal, so this method must have a more complete design. Filters, or more complex software filtering, are of course more costly. 2. Non-electrical methods for partial discharge detection: partial discharge Electrical detection methods, including acoustics, optics, etc. (1) Acoustic detection method: (a) Ultrasonic microphone: When part of the power supply is in the air, such as corona, the partial discharge produces ultrasonic waves by air medium. Propagation, it is easy to find the power supply by using the ultrasonic microphone, but if the partial power supply is in the internal medium of the equipment, such as the oil of the oil-immersed transformer, the resin of the molded transformer, the gas-insulated switch SF6 (hexafluoride Sulfur), these media are isolated from the air, and the chances of the discharged acoustic signals being transmitted from these media to the air are minimal, so the internal discharge must use a phono sensor. (b) Acoustic sensor: when internal Partial discharge is a pulse-like phenomenon that generates mechanical pressure waves inside the medium. This is the case with sound radiation, which may be caused by collisions between molecules inside the material and molecules in adjacent structures. , forming a sound source to emit sound waves, the sound waves will spread around the device, please refer to the first figure for the propagation mode. Sonic whether the air will spread to the media by the media inside the device? This must consider the sound impedance of the two media. Generally, the sound impedance of the air is very different from the sound impedance of the internal medium of the device. Therefore, the sound wave of the medium inside the device cannot be transmitted by air, so the ultrasonic microphone is used to measure the internal The sound source is very difficult. The Acoustic Emission Method uses an AE (sound) sensor (8 1 ) to adhere to the surface of the device (8 2 ) and uses the piezoelectric material inside the ae sensor (8 1 ) to mechanically The pressure wave is converted into an electric sound signal, as shown in the first figure, and the sound signal is amplified by a preamplifier (83). The frequency signal of the sound wave signal obtained by the sounding method is about 2 kHz to 80 kHz. Between kHz, the lowest frequency is required to be processed by other methods, so it is the most cost-effective. (2) Visual or optical inspection: When corona is formed in the power equipment, the principle of rising surface temperature of the equipment caused by the discharge can be used to find the hot spot using the infrared thermal display; or the characteristics of the spectrum of the radiation after the gas ionization is caused by finding the corona. It can be inspected using equipment for ultraviolet discharge detection. The price of equipment required for these two methods is more than one million, and they can only be used for surface corona detection. For internal discharge and shelter, it is the biggest blind spot. . (3) Analytical method for dissolved gases in oil: 1284741 Let f Μ, "日修 (more} replacement τη ΛΊΤΠ--ir~! ww··β»v»TI*VT1 iminmeiXi»^mrmf mmmmwmmma. Use insulation Oil electrical equipment, in some cases, can be used to analyze the composition and content of dissolved gases in the oil to detect the presence of partial discharge. The dissolution and accumulation of gas generated by partial discharge in oil is a long process, which can be in a period of time. Multiple sampling or continuous monitoring in time, this method can take oil samples for measurement when the equipment is not powered off. It is suitable for equipment testing in operation, but the inspection results must be analyzed by precision analysis. The result is known immediately, and the analysis equipment is very expensive and must be corrected regularly. In addition, this method is only applicable to electrical equipment using insulating oil, such as gas-insulated switches and molded-type transformers. In addition, currently partial discharge detectors are generally available. The design principle is as shown in the second figure. The system host (9 1 ) of this partial discharge detector requires a high-speed CPU (central processing unit) and a large amount of memory. With hard disk and its A/D converter (Analog/Digital) (9 2 ) is a multi-channel design, so the A/D converter uses the principle of time sharing. The analog signal of this channel is converted into a large amount of digital data and sent to the memory of the main control computer. The memory capacity must be large. At this time, the CPU performs very heavy analysis and identification work, and the analysis and identification work is completed. , you have to restore a large amount of data to the hard disk, so when processing a channel
日修(更〉正替換頁 1284741 間可能超過數分鐘，緊接著A/D轉換器切換下一個通 道，開始下一個分析與辨識工作。 然而’-般麵最基本的需求是尋找故障的設 備，至於分析_識工作應該是製造商與維修薇商的 工：，因此，分析與辨識工作對使用的廠商而言並沒It may take more than a few minutes between the replacement page 1284741, and then the A/D converter switches to the next channel to start the next analysis and identification work. However, the most basic requirement of the 'normal surface is to find the faulty device. As for the analysis, the work of literacy should be the work of the manufacturer and the repairer. Therefore, the analysis and identification work is not for the manufacturer used.
有意義，也正因如此，—般廠商對於要支付分析與辨 識之費用的意願並不高。 而且在量測環境方面，一般被量測的設備分佈可 月匕很廣非集中在一特定的場戶斤，例如高科技廠房 内的模鑄型變壓器，其電力控制室的長與寬可能都在 數十公尺以上；又如台電變電所的GCB(氣體絕緣開關） 與GIL(氣體絕緣傳輸線）的分佈一定都超過數百公尺 以上的距離，此時如果仍使用傳統部分放電檢測儀 裔’單就信號線衰減的問題就無法克服，更不要提後 面分析與辨識的工作；此外，再就現場安全設施來考 量，例如高科技廠房内的模鑄型變壓器，每一顆變壓 器都有欄杆圍繞，造成檢測施行的困擾。 同時一般高壓設備都會有許多雜訊產生，所以類 比的信號線不可能太長，且數位資料傳輸線的抗干擾 要求必須十分嚴格。 綜合上面的分析，傳統部分放電檢測儀器如要符 10 1284741 • sMeaningful, and because of this, the general willingness to pay for the cost of analysis and identification is not high. Moreover, in terms of the measurement environment, the distribution of equipment that is generally measured can be widely distributed in a specific field, such as a molded-type transformer in a high-tech factory, and the length and width of the power control room may be More than tens of meters or more; for example, the distribution of GCB (gas insulated switch) and GIL (gas insulated transmission line) of Taipower Substation must exceed the distance of hundreds of meters or more, if the traditional partial discharge detector is still used. The problem of 'signal line attenuation' can't be overcome, let alone the analysis and identification work; in addition, consider the on-site safety facilities, such as molded-type transformers in high-tech factories, each transformer has Surrounded by railings, causing troubles in detection and implementation. At the same time, general high-voltage equipment will have a lot of noise generated, so analog signal lines can not be too long, and the anti-interference requirements of digital data transmission lines must be very strict. Based on the above analysis, the traditional partial discharge detection instrument is required to be 10 1284741 • s
合其要求，製造成本尤其為抗㈣干擾或 =必須使用光纖網路系統n彡lb糾 器與解碼 态0 【發明内容】 今’發明人即是鐘於習知部分放電檢測儀器所具 備之缺失，於是本著求好之精神及理念，並在多方巧 打研創出本發明’以提供—種可大幅降低成本、不 ♦ t要主控電腦即可形成單—的檢㈣統，同時可以達 到隨時監測的目的，而且，如需要作整廠的集中監測， 亦可利用單晶片的非同步串列傳輸的界面將計數值傳 至主控主機，可避免造成主機CPU的負擔。 本發明之使用音射原理的簡易型部分放電檢測器係由 以下技術達成： 其主要係在電力設備上設立一音射感測器，並在 g 其輸出端依序連設前級放大器與帶通濾波器，再於帶 通濾波器的輸出端設置一比較器，且將該比較器所產 生之方波傳送給單晶片，同時使用單晶片内部的計數 器以每秒為計數單位來計數部分放電的次數，並將計 數次數予以顯示，以藉由計數部分放電的次數來判斷 電力設備是否需要維修。 【實施方式】 而為令本發明所運用之技術手段能夠有更完整、 更请楚的揭露，茲詳細說明如下，並請一併參閱圖式 及圖號： 請參閱第三圖所示，其係本發明使用音射原理的簡 易型部分放電檢測器之示意圖，其主要係在電力設備（1 ) 上設立一音射感測器（2 )，以由音射感測器（2 )取 得電力設備（1 )所產生之音射信號，於音射感測器 (2 )的輸出端連設一前級放大器（3 )，以將音射信 號放大，並在前級放大器（3)之後設置一帶通濾波 器（4 )【Bandpass filter】，以濾、除高頻與低頻部分 的音射信號，再於帶通濾波器（4)的輸出端設置一 比較器（5 )，以將濾除高頻與低頻部分的音射信號轉 成方波信號，並將該比較器（5)所產生之方波信號 傳送給單晶片（6 )，該單晶片（6 )内部具有計數器， 供以每秒為計數單位來計數部分放電的次數，且計數 器的輸出端連接至顯示器（7 )，以將計數次數予以顯 示，俾藉由計數部分放電的次數來判斷電力設備（1 ) 是否需要維修。 據此，當部分放電發生時，由音射感測器（2) 【AE sensor】取得音射信號，經由前級放大器（3 ) 將音射信號放大與帶通濾波器（4)濾除高頻與低頻 部分的音射信號後，即可取得最佳的音射波形，接著， 將此音射波形經由比較器（5 )轉成方波信號，並將 該方波信號傳送給單晶片（6 )，利用單晶片（6 )内 部的計數器（counter)以每秒為計數單位來計數部分 J234741 命（月衫同修(更)正替換頁 放電的次數，並將所計數之次數輸出至顯示器（7) 顯示。 即當沒有部分放電產生，就沒有方波信號輸入， 計數器（counter)的計數值為零，此時顯示器（7 )顯 示放電次數為零，單晶片亮綠燈，表示設備沒有問題。 當有音射信號產生，但不是每秒都有或偶爾才有 時，則有可能由背景雜訊產生，或有其他開關切換造 • 成干擾，此時單晶片（6)亮黃燈，並以顯示器（7 ) 顯示其計數值，以提醒廠務人員的注意。 當有音射信號產生，而且有週期性，表示此電力 設備（1 )有部分放電產生，此時早晶片（6)免紅 燈，並以顯示器（7)顯示其計數值，此時廠務人員 應該要為此電力設備（1 )安排維修。 又，一般單晶片（6)都有非同步串列傳輸的界 ❿ 面，可將計數值傳至主控主機，若使用RS-485的通訊 協定，就可以利用一條信號線，完成一對多點雙向的 通訊，而且此通訊的距離可達數公里以上，藉以供作 整廠的集中監測時，可利用單晶片（6)的非同步串 列傳輸的界面將計數值傳至主控主機，由於其只傳送 計數值，故不會造成主控主機之中央處理單元【CPU】 的負擔。 13 J284741 炙年，月修(更)正替換頁 經由以上的實施說明可知本發明與習知相較具有 如下數項優點： 1.大幅降低成本—由於部分放電產生的音波信號頻 率不高，約20-80 kHz，因此可以使用一般的電子 電路元件來建構檢測器，且目前單晶片價格便宜， 種類多樣，技術純熟，工業界應用十分廣泛，故可 確實將檢測設備下降至十分普及的成本。 φ 2.不需要主控電腦，可以形成單一的檢測系統。 3. 可以達到隨時監測的目的。 4. 如需要作整廠的集中監測，可利用單晶片的非同步 ‘串列傳輸的界面將計數值傳至主控主機，由於只傳 送計數值，不會造成主機CPU的負擔。 綜上所述，本發明實施例確能達到所預期之使用 功效，又其所揭露之具體構造，不僅未曾見諸於同類 產品中，亦未曾公開於申請前，誠已完全符合專利法 之規定與要求，爰依法提出發明專利之申請，懇請惠 予審查，並賜准專利，則實感德便。 14 1284741In accordance with its requirements, the manufacturing cost is especially resistant to (four) interference or = must use the fiber-optic network system n 彡 纠 纠 与 解码 解码 【 【 【 【 【 【 【 【 【 【 ' ' ' ' ' ' ' ' ' 发明 发明 发明 发明 于 于 于 于 于 于 于Therefore, in the spirit and philosophy of seeking good, and in the multi-disciplinary research and development to create the invention 'to provide - a kind of inspection can greatly reduce the cost, not to master the computer can form a single - inspection (four) system, at the same time can reach The purpose of monitoring at any time, and, if centralized monitoring of the whole plant is required, the interface value can be transmitted to the master host by using the interface of the asynchronous serial serial transmission of the single chip, thereby avoiding the burden on the host CPU. The simple partial discharge detector using the principle of sound emission of the present invention is achieved by the following techniques: It mainly establishes a sounding sensor on the power device, and sequentially connects the preamplifier and the band at the output end of the device. Passing a filter, then setting a comparator at the output of the band pass filter, and transmitting the square wave generated by the comparator to the single chip, while counting the partial discharge in units of counters per second using a counter inside the single chip The number of times and the number of counts are displayed to determine whether the power device requires maintenance by counting the number of partial discharges. [Embodiment] In order to make the technical means applied by the present invention more complete and more detailed, the following is a detailed description, and please refer to the drawings and figure numbers together: Please refer to the third figure, A schematic diagram of a simple partial discharge detector using the principle of sound emission according to the present invention, which mainly establishes a sounding sensor (2) on the power device (1) to obtain power from the sounding sensor (2) The sound signal generated by the device (1) is connected to a preamplifier (3) at the output end of the sounding sensor (2) to amplify the sound signal and is set after the preamplifier (3) a bandpass filter (4) [Bandpass filter] to filter, remove the high frequency and low frequency part of the sound signal, and then set a comparator (5) at the output of the band pass filter (4) to filter out The amp signal of the high frequency and low frequency portions is converted into a square wave signal, and the square wave signal generated by the comparator (5) is transmitted to the single chip (6), and the single chip (6) has a counter inside for each The second is the count unit to count the number of partial discharges, and the output of the counter Connected to the display (7), the number of counts to be displayed, by counting the number of partial discharge serve to determine the power device (1) the need for maintenance. According to this, when partial discharge occurs, the sound signal is obtained by the AE sensor (2), and the sound signal is amplified by the preamplifier (3) and the band pass filter (4) is filtered out. After the vocal signal of the frequency and low frequency parts, the best sound wave waveform can be obtained, and then the sound wave waveform is converted into a square wave signal via the comparator (5), and the square wave signal is transmitted to the single chip ( 6), using the counter inside the single chip (6) to count part of the J234741 life in units of counts per second (the monthly dress repair (more) is replacing the number of page discharges, and output the counted number to the display (7) Display. That is, when there is no partial discharge, there is no square wave signal input, and the count value of the counter is zero. At this time, the display (7) shows that the number of discharges is zero, and the single chip is lit green, indicating that the device has no problem. When a vocal signal is generated, but not every second or occasionally, it may be generated by background noise, or other switching may cause interference. At this time, the single chip (6) lights up yellow. And display it with the display (7) The value is used to remind the attention of the factory personnel. When there is a phono signal generated and there is periodicity, it means that the power equipment (1) has a partial discharge generated, at this time the early wafer (6) is free of red light and is displayed by the display (7) ) Display the count value, at this time the factory personnel should arrange maintenance for this power equipment (1). In addition, the general single chip (6) has the interface of asynchronous serial transmission, which can pass the count value to the main Control host, if you use RS-485 communication protocol, you can use one signal line to complete one-to-many two-way communication, and the distance of this communication can reach several kilometers or more, so that it can be used for centralized monitoring of the whole plant. The interface of the asynchronous serial transmission of the single chip (6) transmits the count value to the master host. Since it only transmits the count value, it does not cause the burden of the central processing unit [CPU] of the master host. 13 J284741 炙Year, month repair (more) replacement page According to the above implementation description, the present invention has several advantages as compared with the conventional ones: 1. Significantly reduce the cost - the frequency of the sound wave signal due to partial discharge is not high, about 20-80 kHz, Therefore, general electronic circuit components can be used to construct the detector, and currently the single chip is inexpensive, diverse, skilled, and widely used in the industry, so the detection equipment can be reduced to a very popular cost. The main control computer can form a single detection system. 3. It can achieve the purpose of monitoring at any time. 4. If you need centralized monitoring of the whole plant, you can use the single-chip asynchronous 'serial transmission interface to transfer the count value to the main The control host, because only the count value is transmitted, does not cause a burden on the host CPU. In summary, the embodiment of the present invention can achieve the expected use efficiency, and the specific structure disclosed therein has not only been seen in similar products. However, it has not been disclosed before the application. Cheng has fully complied with the requirements and requirements of the Patent Law. He has filed an application for an invention patent in accordance with the law, and he is pleased to review it and grant a patent. 14 1284741
【圖式簡單說明】 第一圖··音波傳播方式示意圖 第二圓··習知部分放電檢測儀器示意圖 第三圖：本發明之部分放電檢測器示意圖 【主要元件符號說明】 (1) 電力設備 (2 ) 音射感測器 (3) 前級放大器 (4 ) 帶通濾波器 (5) 比較器 (6 ) 早晶片 (T) 顯不斋 (8 1 ) AE感測器 (8 2)設備 (8 3)前級放大器 (9 1 )系統主機 (9 2 ) A/D轉換器[Simple diagram of the diagram] The first diagram · The schematic diagram of the sound wave propagation mode The second circle · The schematic diagram of the partial discharge detection instrument of the prior art The third diagram: The schematic diagram of the partial discharge detector of the present invention [Description of the main components] (1) Power equipment (2) Acoustic sensor (3) Preamplifier (4) Bandpass filter (5) Comparator (6) Early wafer (T) Explicit (8 1 ) AE sensor (8 2) device (8 3) Preamplifier (9 1) System Host (9 2 ) A/D Converter
1515