局部放电监测装置

1产品概述

1 Product Introduction

现阶段，电力系统对于电能的质量提出越来越高的要求，不仅要确保供电稳定可靠，而且供电的安全性也是重要要求。电力系统中，金属封闭开关设备得到广泛应用，因此开关柜运行的是否稳定可靠是重中之重，电气设备在运行的过程中由于受到高温、电压、振动以及其他化学作用，将会使得其绝缘性能降低，会产生局部放电现象，同时又会加速绝缘的恶化情况，会给电力系统造成较大的经济损失。但是，由于开关柜内部空间狭小、零件繁多、结构复杂，绝缘距离小，因此比其它电力设备更容易出现绝缘问题，从而对设备安全运行带来巨大隐患。

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.

高压电气设备的绝缘内部如气泡间隙、杂质、尖刺等问题，在强电场作用下使得开关柜绝缘内部的电场分布不均匀，在产生问题的部位电场强度会增加，从而容易导致该部位发生未贯穿整个绝缘的放电，即局部放电。

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.

局部放电一般不会引起开关柜内部绝缘的穿透性击穿，但是却会导致绝缘介质的局部损坏。若其长期存在，则会在一定条件下造成绝缘装置电气强度的破坏，造成开关柜内部绝缘击穿。因而对于电气设备而言，电气设备发生局部放电现象是导致其绝缘老化或劣化甚至损坏从而引发设备损毁及电力系统事故的重要原因之一，同时局部放电也是设备绝缘完整性退化的标志。因此对电气设备的局部放电进行监检测是评估设备绝缘状况的重要手段，也是发现设备潜伏性故障，实现故障预警，避免故障发生的有效措施之一。

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局部放电监测装置通过检测伴随局部放电而产生的电磁波辐射并自动确定现场局部放电的实际检测频率，随后将检测的局部放电的放电量和放电次数等数据上传至服务器。

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型号说明

2 Type Introduction

3技术指标

3 Technical Features

4产品安装及尺寸

4 Product installation and size

APD100局部放电监测装置采用导轨（DIN35mm）安装方式，可安装在开关柜二次仪表室；特高频传感器采用磁吸安装方式，吸附在开关柜电缆室柜壁。产品详细尺寸见图，单位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.

图1.1 APD100局放监测装置

Figure 1.1 APD100 Partial Discharge Detector

图1.2 APD200局放监测装置

Figure 1.2 APD200 Partial Discharge Detector

图1.3 特高频局放传感器

Figure 1.3 UHF Sensor