Transmission lines and substations in the power network insulators hold up the current insulation barrier, but because the insulators are contaminated, surface buildup and thus the "dirt flash" has become a problem that can not be ignored.
Contamination and surface buildup of insulators have led to the problem of "dirt flash", which cannot be ignored.
The formation of tarnish flash is actually a combination of pollutants and meteorological conditions, and has a great deal to do with the external environment in which the insulator is located. In industrial intensive areas, factory emissions of sulfur dioxide, nitrogen oxides and other acidic gases combined with dust, in the insulator surface will form extremely conductive chemical deposits; in the coastal areas of the salt spray, sodium chloride crystals with the humid air attached to the natural electrolyte solution is no different; and in the north of the rain less, dusty, fine thick sand particles will not only reduce the insulating properties directly, but also will adsorb the Moisture in the air to form a conductive channel. Once the local fog, rainfall or condensation dew gas brings wet environment, these pollutants will be quickly activated, the original insulation insulator surface into a conductive path, in the normal operating voltage triggered by a violent flashover discharge.
In the face of pollution flash problem, the power industry is building up a comprehensive three-dimensional defense system. At the level of physical protection, regular manual cleaning is like giving insulators a "bath", mechanically removing surface pollutants. Technical monitoring, Shenzhen Dingxin Intelligent Technology Co., Ltd. launched a dirty online monitoring system (Transmission Line Insulator Obscurity Online MonitoringDX-WPS100-WH type), specially developed for the detection of anti-fouling flash of the electric power system, through the real-time on-line monitoring of salt density, gray density, temperature, humidity and other parameters, the density of the measurement range up to 0 ~ 1mg/cm2, real-time insulator health status capture; once detected anomalies, the insulator can be used to detect the health status of the insulator. Once an abnormality is detected, the system will immediately issue a warning message to remind the operation and maintenance personnel to fight for valuable disposal time.
The outstanding functions of the on-line dirt monitoring system make it an important link in the construction of the whole-process anti-fouling flash system of "monitoring-warning-governance", which effectively guards the stability of all the lights.
