According to EVN’s Vice President Ngo Son Hai, Vietnam Electricity sets a target to reach a power loss rate of as low as 6.5% by the year 2020. This challenging target requires EVN and their subsidiaries to spend intensive efforts. To this end, EVN needs to learn from international experiences and best practices which are suitable for and applicable to the current situation in Vietnam.
International and domestic experts communicated their ideas on issues related on power loss reduction at the Workshop
Mr. Hou Yiming, an expert from the Institute of Electrical Engineering of China, stated that power loss is unavoidable during power transmission and distribution process. China has applied a lot of technical solutions in order to diminish power loss, including narrowing electricity supply area, removing transformers that suffer from excessive losses, substituting large section wire conductors, concurrently optimizing reactive power allocation in power grids.
Mr. Chao Shun Chen, an expert from the Taiwan Power Company presented that the Company had established and developed smart grids, comprising three types of grid architectures: closed loop (applicable to important loads), open loop and simple (applicable in rural areas). This scheme has enabled Taiwan to decline their power loss rate from 6.02% in 1990 down to 3.72% in 2015 – the country thus ranks second place in the world with regards to low power loss rate.
In addition, application of automation equipment in the power system has lowered the System Average Interruption Duration (SAIDI) from 1 hour to only 2 minutes. This technology is absolutely applicable to Vietnam, and Taiwan Power Company is willing to share their experiences with Vietnam in this regard.
In Vietnam, besides being devoted to securing sufficient electricity supply to the electricity demand annual growth of 11% for socio – economic development of the country and residential uses of the people, EVN has paid special attention to power loss rate declination in the power system. Via plenty of synchronous solutions, the power loss rate of the entire EVN has declined to 7.57% in 2016 from 10.15% in 2010 and it is targeted to achieve 7.47% this year.
A representative from Vietnam Electrical Engineering Association, the entity regularly cooperating with EVN in this area, Professor and Academic Tran Dinh Long, Vice Chairman of VEEA stated that the Workshop would help EVN and its subsidiaries gain a lot of valuable lessons and experiences so as to gain more achievements in power loss rate reduction, at the same time the power system of Vietnam would be elevated to be comparable to other advanced countries in the region.