On Nov 9, State Grid Jiyuan Power Supply Co (State Grid Jiyuan) arranged personnel to carry out concentrated patrols on key distribution lines in Wangwu town, the mountainous western area of Jiyuan in northwest Henan province. These lines span forest zones, rivers, valleys and wind gaps. The team eliminated potential hidden dangers and adopted targeted safety protection measures tailored to each line to ensure the safe operation of the power grid and reliable power supply amid cold waves.
As winter fast approaches, cold-wave weather conditions such as strong winds and icing occur frequently, posing new challenges to the safe operation of the power grid. Focusing on winter weather patterns and grid operation status, State Grid Jiyuan has strengthened management and control, fulfilled all of its responsibilities, earnestly carried out prevention and response work, and enhanced its power support capacity.
Combined with the power grid layout and local landforms, the company conducts thorough advance anticipation and risk prediction, and carries out careful power grid risk assessment. It conducts comprehensive inspections of windproof, rain and snow resistant facilities for transmission and distribution lines in light of actual conditions to remove potential safety hazards in a timely manner.
Given that its service area features many mountains and hills with complex terrain, the company analyzes equipment operation risks based on the distribution of power supply lines and refines safety control measures. It reinforces infrastructure such as conductor ties and pole stay wires of distribution lines at wind gaps, clears debris within power corridors, and implements preemptive technical treatment for equipment in areas prone to conductor galloping.
In accordance with weather conditions and peak power load characteristics, the company enforces the patrol system and arranges special inspections for key equipment, priority areas and critical lines. It leverages infrared temperature measurement and other methods to monitor the operating status of the power grid, so as to detect, report and handle risk and danger points at an early stage.
In addition, State Grid Jiyuan has refined the early warning release mechanism, cascading emergency measures down to substations and power distribution transformers. It verifies the feasibility and rigorous nature of emergency plans through practical drills. The company also strengthens the management of emergency supplies, conducts safety performance tests on emergency vehicles, repair materials and tools, and implements the systems of on-duty leadership, emergency duty and information reporting. It strives to improve the coordinated support capacity for responding to severe weather.
To boost the quality and efficiency of its cold wave response, the company has improved its emergency repair mechanism and set up emergency repair teams. Taking into account the geographical features of Jiyuan and emergency management requirements, it delivers solid safety and technical training to keep the teams ready for emergencies, ensuring prompt responses to unexpected incidents and safe operation of the power grid.
