Recently, the National Commission for Standardization of Live Working Standardization Committee, the State Grid and South Network and other units of experts on the China Southern Power Grid Co., Ltd. key science and technology project "10 kV distribution network uninterruptible power operation key technologies" achievements were identified and pointed out that the project innovation Prominent sexual, with significant economic and social benefits, expanding 10 kV distribution network uninterruptible power supply technology application scope and depth, the results have better prospects for the promotion and application of its technical level reached the international advanced level.
It is reported that, in order to improve the reliability of power supply, Yunnan Power Grid Co., Ltd. live branch operations from 2012 to study the integrated application of live operations and bypass operation technology, without interrupting the user power supply under the premise of the 10 kV distribution network equipment power outage Maintenance methods, techniques and equipment for maintenance. The project mainly studies on live working of high-altitude area of ​​10 kV distribution network and transfer of high and low voltage loads without power supply, which provides technical support for uninterrupted operation of distribution network and improvement of power supply reliability. The project has applied for 8 invention patents, 1 authorized, 8 utility model patents authorized, 1 software copyright authorized, 11 papers published, 1 national standard compilation, 7 enterprise standards of South Network, and 1 teaching material.
At present, the live branch has applied this achievement to the power supply bureaus such as Kunming, Lijiang, Diqing, Yuxi and other power supply bureaus, realizing more power supply at different elevations, different electrical connections, different environments and climatic conditions On-site application, demonstration, its feasibility and suitability. In 2015, Yunnan Power Grid Company carried out 9,660 live overhaul operations of distribution network in total. The distribution network charged operation reduced the number of households with power supply of 1.536 million and the power supply of 62.9401 million kilowatt hours. Rate of 0.08 percentage points to reduce the user average blackout time of 6.62 hours.
This year, Yunnan Power Grid Corporation plans to 10 kV distribution network non-stop operation of key technical achievements in the province's power supply units to promote the use of. Internally, it actively expands the range of uninterruptible power supply operation in distribution network and adds corresponding technical support to improve the reliability of power supply; externally, it guarantees the continuous power supply to customers and improves the power service.
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