1產品概述

1 Product Introduction

現階段，電力系統對于電能的質量提出越來越高的要求，不僅要確保供電穩定可靠，而且供電的安全性也是重要要求。電力系統中，金屬封閉開關設備得到廣泛應用，因此開關柜運行的是否穩定可靠是重中之重，電氣設備在運行的過程中由于受到高溫、電壓、振動以及其他化學作用，將會使得其絕緣性能降低，會產生局部放電現象，同時又會加速絕緣的惡化情況，會給電力系統造成較大的經濟損失。但是，由于開關柜內部空間狹小、零件繁多、結構復雜，絕緣距離小，因此比其它電力設備更容易出現絕緣問題，從而對設備安全運行帶來巨大隱患。

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.

高壓電氣設備的絕緣內部如氣泡間隙、雜質、尖刺等問題，在強電場作用下使得開關柜絕緣內部的電場分布不均勻，在產生問題的部位電場強度會增加，從而容易導致該部位發生未貫穿整個絕緣的放電，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.

局部放電一般不會引起開關柜內部絕緣的穿透性擊穿，但是卻會導致絕緣介質的局部損壞。若其長期存在，則會在一定條件下造成絕緣裝置電氣強度的破壞，造成開關柜內部絕緣擊穿。因而對于電氣設備而言，電氣設備發生局部放電現象是導致其絕緣老化或劣化甚至損壞從而引發設備損毀及電力系統事故的重要原因之一，同時局部放電也是設備絕緣完整性退化的標志。因此對電氣設備的局部放電進行監檢測是評估設備絕緣狀況的重要手段，也是發現設備潛伏性故障，實現故障預警，避免故障發生的有效措施之一。

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.

APD200高壓開關柜局部放電監測裝置通過檢測伴隨局部放電而產生的電磁波輻射并自動確定現場局部放電的實際檢測頻率，隨后將檢測的局部放電的放電量和放電次數等數據上傳至服務器。

The APD200 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型號說明

2 Type Introduction

3技術指標

3 Technical Features

4產品安裝及尺寸

4 Product installation and size

APD200高壓開關柜局部放電監測裝置采用導軌（DIN35mm）安裝方式，可安裝在開關柜二次儀表室；特高頻傳感器采用磁吸安裝方式，吸附在開關柜電纜室柜壁。產品詳細尺寸見圖，單位mm。

The APD200 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局放監測裝置

Figure 1.1 APD100 Partial Discharge Detector

圖1.2 APD200局放監測裝置

Figure 1.2 APD200 Partial Discharge Detector

圖1.3 特高頻局放傳感器

Figure 1.3 UHF Sensor