局部放電監(jiān)測裝置

1產(chǎn)品概述

1 Product Introduction

現(xiàn)階段，電力系統(tǒng)對(duì)于電能的質(zhì)量提出越來越高的要求，不僅要確保供電穩(wěn)定可靠，而且供電的安全性也是重要要求。電力系統(tǒng)中，金屬封閉開關(guān)設(shè)備得到廣泛應(yīng)用，因此開關(guān)柜運(yùn)行的是否穩(wěn)定可靠是重中之重，電氣設(shè)備在運(yùn)行的過程中由于受到高溫、電壓、振動(dòng)以及其他化學(xué)作用，將會(huì)使得其絕緣性能降低，會(huì)產(chǎn)生局部放電現(xiàn)象，同時(shí)又會(huì)加速絕緣的惡化情況，會(huì)給電力系統(tǒng)造成較大的經(jīng)濟(jì)損失。但是，由于開關(guān)柜內(nèi)部空間狹小、零件繁多、結(jié)構(gòu)復(fù)雜，絕緣距離小，因此比其它電力設(shè)備更容易出現(xiàn)絕緣問題，從而對(duì)設(shè)備安全運(yùn)行帶來巨大隱患。

At present, the power system has increasingly high requirements for the quality of electricity, not only to ensure stable and reliable power supply, but also to ensure the safety of power supply. In the power system, metal enclosed switchgear is widely used, so the stability and reliability of the switchgear operation is of utmost importance. Electrical equipment, due to high temperature, voltage, vibration, and other chemical effects during operation, will have a reduced insulation performance, resulting in partial discharge and accelerating the deterioration of insulation, causing significant economic losses to the power system. However, due to the narrow internal space, numerous components, complex structure, and small insulation distance of the switchgear, it is more prone to insulation defects than other power equipment, which poses a huge hidden danger to the safe operation of the equipment.

高壓電氣設(shè)備的絕緣內(nèi)部如氣泡間隙、雜質(zhì)、尖刺等問題，在強(qiáng)電場作用下使得開關(guān)柜絕緣內(nèi)部的電場分布不均勻，在產(chǎn)生問題的部位電場強(qiáng)度會(huì)增加，從而容易導(dǎo)致該部位發(fā)生未貫穿整個(gè)絕緣的放電，即局部放電。

Defects such as bubble gaps, impurities, and spikes in the insulation of high-voltage electrical equipment can cause uneven distribution of electric field inside the switchgear insulation under the action of strong electric fields. The electric field strength at the defect area will increase, which can easily lead to partial discharge that does not penetrate the entire insulation, that is, partial discharge.

局部放電一般不會(huì)引起開關(guān)柜內(nèi)部絕緣的穿透性擊穿，但是卻會(huì)導(dǎo)致絕緣介質(zhì)的局部損壞。若其長期存在，則會(huì)在一定條件下造成絕緣裝置電氣強(qiáng)度的破壞，造成開關(guān)柜內(nèi)部絕緣擊穿。因而對(duì)于電氣設(shè)備而言，電氣設(shè)備發(fā)生局部放電現(xiàn)象是導(dǎo)致其絕緣老化或劣化甚至損壞從而引發(fā)設(shè)備損毀及電力系統(tǒng)事故的重要原因之一，同時(shí)局部放電也是設(shè)備絕緣完整性退化的標(biāo)志。因此對(duì)電氣設(shè)備的局部放電進(jìn)行監(jiān)檢測是評(píng)估設(shè)備絕緣狀況的重要手段，也是發(fā)現(xiàn)設(shè)備潛伏性故障，實(shí)現(xiàn)故障預(yù)警，避免故障發(fā)生的有效措施之一。

Partial discharge generally does not cause penetrating breakdown of the insulation inside the switchgear, but it can lead to local damage to the insulation medium. If it exists for a long time, it will cause damage to the electrical strength of the insulation device under certain conditions, ultimately leading to insulation breakdown inside the switchgear. Therefore, for electrical equipment, the occurrence of partial discharge is one of the important reasons for insulation aging, deterioration, and even damage, leading to equipment damage and power system accidents. At the same time, partial discharge is also a sign of equipment insulation integrity degradation. Therefore, monitoring and detecting partial discharge of electrical equipment is an important means to evaluate the insulation status of equipment, and is also one of the effective measures to detect potential faults in equipment, ultimately achieve fault warning, and avoid the occurrence of faults.

APD100局部放電監(jiān)測裝置通過檢測伴隨局部放電而產(chǎn)生的電磁波輻射并自動(dòng)確定現(xiàn)場局部放電的實(shí)際檢測頻率，隨后將檢測的局部放電的放電量和放電次數(shù)等數(shù)據(jù)上傳至服務(wù)器。

The APD100 high-voltage switchgear partial discharge monitoring device detects the electromagnetic wave radiation generated along with partial discharge and automatically determines the actual detection frequency of on-site partial discharge. Then, data such as the amount of discharge and the number of discharges of the detected partial discharge are then uploaded to the server.

2型號(hào)說明

2 Type Introduction

3技術(shù)指標(biāo)

3 Technical Features

4產(chǎn)品安裝及尺寸

4 Product installation and size

APD100局部放電監(jiān)測裝置采用導(dǎo)軌（DIN35mm）安裝方式，可安裝在開關(guān)柜二次儀表室；特高頻傳感器采用磁吸安裝方式，吸附在開關(guān)柜電纜室柜壁。產(chǎn)品詳細(xì)尺寸見圖，單位mm。

The APD100 UHF partial discharge detector adopts a guide rail (DIN35mm) installation method and can be installed in the secondary instrument room of the switchgear; The UHF sensor adopts a magnetic suction installation method and is adsorbed on the wall of the switchgear cable room. The detailed dimensions of the product are shown in millimeters.

圖1.1 APD100局放監(jiān)測裝置

Figure 1.1 APD100 Partial Discharge Detector

圖1.2 APD200局放監(jiān)測裝置

Figure 1.2 APD200 Partial Discharge Detector

圖1.3 特高頻局放傳感器

Figure 1.3 UHF Sensor