山西长治：政企联手开展分布式光伏电压越限治理

Core Viewpoint - The Shanxi Province Changzhi City Energy Bureau has issued a notification to enhance the safety management of distributed photovoltaic (PV) grid connections, providing policy support for the effective integration of distributed PV systems into the power grid [1][2]. Group 1: Policy and Regulatory Framework - The notification outlines that new distributed PV projects must meet the conditions of being "observable, measurable, adjustable, and controllable" [2]. - Existing grid-connected entities are required to strictly adhere to operational regulations, and inverter equipment must have at least one data interface for monitoring purposes [2]. - If the power quality does not meet standards after improvement measures, the distributed power source must disconnect from the grid until compliance is achieved [2]. Group 2: Implementation Measures - The State Grid Changzhi Power Supply Company has implemented measures to address voltage limit issues, including "centralized collection and voltage boosting" and low-voltage collection transformations [1]. - A real-time monitoring program for power quality has been installed in the centralized device at the distribution transformer station, which operates on a logic of "data collection—intelligent decision-making—instruction issuance—effect feedback" [2]. - The program sets voltage thresholds and automatically issues control commands to maintain voltage within standard ranges, enhancing the reliability of distributed PV systems [2]. Group 3: Market Trends and Growth - Distributed PV systems have gained popularity due to their advantages of low investment, small land requirements, and quick deployment, with over 5,300 new grid-connected distributed PV households and a capacity of 437,300 kW added in Changzhi City in the first 11 months of this year [1]. - The new grid-connected capacity of distributed PV has increased by 18.89% compared to the total for the entire year of 2024 [1]. - As the scale of distributed PV integration grows, voltage limit issues are expected to become more prominent, necessitating collaborative governance between government and enterprises to ensure efficient and reliable utilization [2].