With the continuous development of the power system, the scale and complexity of the distribution network are increasing, and the early warning and location of faults have become an important part of ensuring the stable operation of the power system. As an emerging technical means in recent years, the distribution network traveling wave fault warning and positioning device plays an increasingly important role in the operation and inspection work. In this article, Shenzhen Dingxin Smart Technology will introduce the basic principle, technical characteristics and application cases of the distribution network traveling wave type fault warning and positioning device, and show its magician-like charm in the operation and inspection of transmission lines.
First, the rationale.
Based on the principle of traveling waves, the distribution network traveling wave fault warning and location device realizes rapid early warning and accurate location of faults by capturing transient traveling wave signals in the distribution network. When a fault occurs in the distribution network, a transient traveling wave signal will be generated, and the device can accurately judge the nature and location of the fault by collecting these signals and analyzing and calculating them.
Second, technical characteristics.
1.Rapid response: The distribution network traveling wave fault warning and positioning device has a very fast response speed, which can complete the fault warning and positioning in milliseconds, and gain valuable time for the operation and inspection personnel.
2.High-precision positioning: The device adopts advanced signal processing technology and algorithm, which can realize the accurate positioning of the fault location, and the error range is within the meter level.
3.Intelligent judgment: The device has an intelligent fault type identification function, which can automatically judge the nature of the fault, such as single-phase grounding, phase-to-phase short circuit, etc.
4.Remote monitoring: Through the integration with the dispatching system, the remote monitoring of the distribution network is realized, which is convenient for the operation and inspection personnel to grasp the operation status of the power grid in a timely manner.
5.Strong compatibility: The device has good compatibility and can adapt to various types of distribution networks, without the need for large-scale modification of existing equipment.
3. Application cases.
Case 1: Last year, a city in Yunnan Province had a single-phase grounding fault during the peak summer electricity consumption. Through the rapid response and accurate positioning of the distribution network traveling wave fault warning and positioning device, the operation and inspection personnel quickly determined the fault location and dealt with it in time, effectively avoiding possible power outages.
Case 2: Also at the end of 23, in the power distribution system of a village and town in Zhejiang, a phase-to-phase short circuit fault occurred. Because the device has an intelligent judgment function, the nature of the fault is accurately judged in a short time, which provides an important decision-making basis for the operation and inspection personnel. Through the remote monitoring function of the device, the operation and inspection personnel can grasp the operation status of the power grid in real time, and find and deal with potential faults in time.