Maximum energy savings due to Variable Speed Drive with a SINAMICS PERFECT HARMONY GH180 CONVERTER

Maximum energy savings on Marchwood power plant 

Maximum energy savings due to Variable Speed Drive with a SINAMICS PERFECT HARMONY GH180 CONVERTER

Manufacture of electric components and equipment for wind power plants

Marchwood Power Ltd

Completion: 2017

Marchwood Power Ltd

Southampton, United Kingdom

Customer Situation / Objectives

A number of ongoing reliability issues associated to the pumps, motors and gearboxes of the main cooling water system posed a significant risk to the commercial operation of the Marchwood gas-fired combined cycle power plant.The aim was to improve the control and reliability of the gas-fired combined cycle power station.

Solution/Service Description

Marchwood is a 840MW CCGT power station owned by Marchwood Power Ltd, a 50:50 joint venture between SSE and ESB international. All of the electricity at the plant is sold under contract to SSE. Marchwood began operating in December 2009 and is one of the most efficient gas-fired power stations in the UK.

Installation of three 2.5 MW SINAMICS PERFECT HARMONY GH180 Drives

Installation of three 10-pole 2.1 MW SIMOTICS HV Motors

Removal of the existing motors and gearboxes

Installation and commissioning on-site

Integration into the existing DCS control system

Customer Benefit

Energy savings of 150,000 pounds per year

CO2  reduction has also been predicted to drop by 2,100 tonnes over the next year, leading to additional cost savings.

IDS-Solution (all from a single source)

Location / Project Description

Marchwood is a 840MW CCGT power station owned by Marchwood Power Ltd, a 50:50 joint venture between SSE and ESB international. All of the electricity at the plant is sold under contract to SSE. Marchwood began operating in December 2009 and is one of the most efficient gas-fired power stations in the UK.