# State Grid Changzhou Power Secures Summer Electricity Safety With High-Temperature Overhaul Operations

- Link: https://www.thailand-business-news.com/pr-news/state-grid-changzhou-power-secures-summer-electricity-safety-with-high-temperature-overhaul-operations
- Published: 2026-07-22T15:56:00+07:00
- Author: PR Newswire

CHANGZHOU, China, July 22, 2026 /PRNewswire/ — As Changzhou enters the dog days 
of summer, the regional power grid has hit three record highs in peak electricity
demand. To guarantee reliable and safe power supply amid surging summer loads, State
Grid Changzhou Power Supply Company has launched targeted intensive maintenance 
operations, completing the replacement of insulating components for the 35kV first-
section busbar switchgear at the 110kV Ganxi Substation.

The maintenance project covered the removal of outdated insulating parts, precise
installation and fixation of new components, and comprehensive performance testing.
Featuring concentrated working procedures and stringent process coordination requirements,
the operation was strategically optimized to minimize power outage duration and 
ensure uninterrupted power service for end users during the high-demand summer season.

Prior to the on-site construction, the company’s Substation Maintenance Center completed
thorough on-site measurement, risk identification and process optimization. By streamlining
serial working procedures and refining node management for every construction link,
the team compressed the original 7-day workload into just 3 days, cutting the cumulative
power outage time for key users by over 90 hours. Throughout the operation, on-site
supervisors oversaw construction quality and safety in real time, adhering strictly
to operational standards and achieving zero safety violations, zero on-site accidents
and zero rework.

As core functional components of the 35kV busbar system, aging switchgear insulators
face gradual insulation performance degradation after long-term continuous operation,
posing potential hidden dangers to grid equipment safety. The one-time centralized
component replacement has thoroughly eliminated latent equipment risks. Compared
with traditional segmented maintenance modes, the optimized construction scheme 
effectively minimizes power supply disruptions and reduces operational impacts on
users through precise schedule compression and streamlined process connection.

Working amid scorching summer weather with high temperatures and poor ventilation
inside the switchgear room, the company implemented comprehensive heatstroke prevention
and cooling measures to safeguard frontline staff. On-site air conditioning was 
deployed to improve working conditions, while sufficient drinking water, heatstroke
prevention medicines and other supplies were fully prepared. The company also rationally
arranged working shifts and organized elite teams for overnight construction, ensuring
steady project progress while protecting employees’ health and safety.

In recent years, State Grid Changzhou Power Supply Company has continuously advanced
refined grid equipment management and strictly followed the work principle of "timely
and thorough maintenance". The company has widely promoted standardized operations
and process optimization for the maintenance of power equipment at 500kV and lower
voltage levels, steadily improving maintenance quality and operational efficiency.
In 2025, the company ranked among the top in Jiangsu Province in substation defect
elimination rate, with the number of substation equipment failures dropping by 40.48%
year-on-year.

Moving forward, State Grid Changzhou Power Supply Company will continue to consolidate
grid safety barriers via refined maintenance and standardized operational management.
The company will fully advance the peak summer power supply guarantee campaign, 
delivering stable and reliable power support for high-quality economic and social
development in Changzhou.

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