BEIJING, Sept. 27 (Xinhua) -- Lianyungang Port in Lianyungang City, east China's Jiangsu Province has transmitted 10.453 million kWh of electricity in accumulation to various types of vessels through high-voltage shore power systems, with the "Harmony Yungang" passenger ship recently finishing receiving shore power at the port, according to State Grid Lianyungang Power Supply Company.
Lianyungang Port and State Grid Lianyungang Power Supply Company jointly developed the first set of high-voltage shore power system for ships in China in October 2010, aiming to give a boost to the port's green development.
The shore power system consists of a dock-side power supply system and transformers installed on ships. An easy press of the button on board can realize automatic ship-shore electric grid connection, automatic energy load transfer, and automatic disconnection with generator to ensure on-board services with stable electricity.
As of now, Lianyungang Port has built 16 sets of such high-voltage shore power systems, which have reduced air pollutant emissions by about 8,749.1 tonnes, equivalent to saving about 3,292.7 tonnes of standard coal.
The use of the systems has changed the history when docked ships could only use auxiliary engines such as diesel generators to generate electricity for some loading and unloading operations as well as refrigeration, air conditioning, heating, communication, lighting, etc. on board, and demonstrated higher cost-effectiveness. Taking a standard cargo ship as an example, for the ship to dock at Lianyungang Port throughout the year, its auxiliary engines usually consume about 250 tonnes of light fuel oil that requires a cost of about 2.05 million yuan (292,109 U.S. dollars). With the operation of shore power systems, about 1.35 million yuan (192,364 U.S. dollars) of fuel expenditure can be saved annually.
(Edited by Su Dan with Xinhua Silk Road, sudan@xinhua.org)
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