Partial discharge detection is a crucial task in the safe operation of the power system. As the core equipment in this process, the role of partial discharge detectors cannot be ignored. This article will delve into the working principle, application fields, and important role of partial discharge detectors in ensuring the safety of power equipment.
1. Working principle of partial discharge detector
The partial discharge detector utilizes advanced electronic and digital signal processing technology to capture and measure weak signals generated by partial discharge in power equipment. These weak signals are often overlooked by conventional electrical testing, but they are crucial for the long-term healthy operation of power equipment. By analyzing these signals, the partial discharge detector can accurately determine the insulation condition of the equipment and predict potential fault risks.
2. Application fields of partial discharge detectors
① Transformers: Transformers are the core equipment in the power system, and their insulation condition directly affects the stable operation of the power system. Partial discharge detectors can detect early insulation defects in transformers, avoiding power outages caused by equipment failures.
② Cable: During long-term operation, cables are susceptible to environmental factors and mechanical stress, leading to cracks or damage to the insulation layer. Partial discharge detectors can promptly detect these potential fault points and prevent accidents from escalating.
③ Switch cabinet: The insulation materials in the switch cabinet are prone to deterioration in harsh environments such as high temperature and humidity, leading to partial discharge. The partial discharge detector can monitor the insulation condition of the switchgear in real time, ensuring the normal operation of the equipment.
④ Lightning arrester: The performance of lightning arrester is of great significance for ensuring the safety of the power system. Partial discharge detectors can monitor the insulation performance of lightning arresters and prevent lightning accidents caused by lightning arrester failures.
3. The Important Role of Partial Discharge Detectors in Ensuring the Safety of Power Equipment
① Preventive maintenance: The application of partial discharge detectors has achieved preventive maintenance of power equipment. By regularly conducting partial discharge testing on equipment, potential insulation defects can be detected in a timely manner, avoiding equipment failures during operation. This not only reduces the maintenance cost of equipment, but also improves the stability of the power system.
② Fault warning: The partial discharge detector has real-time monitoring and warning functions. When there is abnormal partial discharge in the equipment, the detector will immediately issue an alarm to remind the operation and maintenance personnel to handle it in a timely manner. This effectively avoids accidents and ensures the safe operation of the power system.
③ Evaluating insulation life: Partial discharge is one of the important indicators of insulation material aging. By monitoring the partial discharge situation of equipment for a long time, the insulation life of the equipment can be evaluated, providing decision-making basis for equipment replacement or maintenance.
④ Improving power supply reliability: In today's increasingly growing demand for power supply, the stable operation of power equipment is crucial for ensuring power supply reliability. The application of partial discharge detectors helps to reduce equipment failure rates, thereby improving power supply reliability and meeting the needs of social production and people's lives.
Summary: As an important detection tool in the power system, partial discharge detectors play a crucial role in ensuring the safety of power equipment. By regularly using partial discharge detectors for testing, potential insulation defects can be detected and resolved in a timely manner, improving the operational efficiency and stability of power equipment, and providing strong guarantees for the safe and reliable operation of the power system.
The product, with portable structure and embedded signal receiving and data processing module, has multiple analysis modes and can conveniently measure the UHF signals and the ultrasonic signals generated by the partial discharge of the electric equipment. Compared with similar products, this product has convenient operation and strong function.Besides the embedded ultrasonic sensor, the host machine of the product is also configured with an external sensor interface for connecting UHF sensor, TEV sensor and external ultrasonic sensor thereto. The uniform interface is adopted for convenient and simple operation.This product widely used in theater testing of power systems, including insulation status testing of high-voltage switchgear, ring-network cabinets, voltage/current transformers, transformers (including dry-type transformers), GIS, overhead lines, cables, and other equipment.
Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com
