Yichang main network transmission line 200 days "zero trip"

At 0:00 on July 21, 2011, Yichang 220KV transmission line in the main network achieved the first 200-day “zero trip” record in history, with 1950 days of safety records, 100% complete line equipment availability, 100% equipment availability, ensuring The safe and stable operation of the main network in Yichang once again set a new record.

Located at the head of Hubei Power Grid, Yichang Power Grid is an important channel for the transmission of West China Power Grid to the east and west of China. It mainly undertakes the task of power transmission of large hydropower plants and local small hydropower stations such as Gezhouba, Geheyan, Qingjiang and Gaobazhou. Up to now, the maximum maintenance radius of the transmission center has reached more than 180 kilometers, and it is responsible for maintaining the main city network of 35KV to 220KV, and cable line meter 115. The total length of the line is 1733.988KM and the tower is 5118 bases.

Since the beginning of this year, the Yichang Power Transmission Center has formulated the “building a national first-class transmission center” target plan, strengthened the research on the challenges that challenge the “double zero” goal, solidly carried out the pioneering competitive activities, and closely focused on the company’s safety production targets and work deployment. We will fully implement the year-round safety activities of the State Grid Corporation's "two grasps and one construction" security risk management and provincial company's "safety first, life supreme" theme, focusing on the prevention of personal injury and accidents, with "three grasps and two controls, three defenses." "Two governance" is the main line, to strengthen the daily operation and maintenance of transmission lines, and carry out the work of peak summer and old line transformation to ensure the safe and stable operation of the transmission line equipment under its jurisdiction.

In order to achieve a 200-day “Zero Trip” record, Yichang Transmission People's footsteps cover 62 key lines under the jurisdiction of fire prevention and anti-breakout. The hidden troubles and defects are found. 260 hidden danger points have been discovered and registered, and the publicity materials for the line have been issued. In 3,256 copies, 5102 messages were sent as warm reminders, and the requirements for the “Nine to Nine Contests” campaign to be the first to be truly contested were reflected in practical work.

Up to now, the rate of critical and serious defect elimination in the transmission center has reached 100%, combined with the newly-added fish ponds in the circuit protection area (the section where the distance from the conductor to the fish pond is less than 30 meters) for various types of signs and warning signs. Cleansing, updating and supplementing were carried out in a timely manner. At the same time, the image of the newly installed warning sign should be left behind and archived so that the health rate can reach 100%. Strengthen the periodical test of safety tools and live working tools. The cycle test rate is 100%, the safety tool is 100%. The pass rate of all kinds of work tickets is 100%, which guarantees 220kV transmission line 200 on the main network. The successful implementation of the "zero trip" goal.