The surveys, which are carried out by ABB or a member of its network of authorised value providers (AVPs), look at all the potential risks and the current level of harmonic distortion.
Harmonics surveys are one of many services offered as part of ABB’s 20+20 vision for improving customer outcomes in the water industry.
Caused by non-linear loads such as variable-speed drives and other rectifier technology, high harmonic currents and high harmonic voltage distortion can cause a wide range of problems, often causing disruption to business operations.
Stuart Foster, UK & IE water industry manager - drives & controls, ABB Limited, says: “Water companies can be particularly affected, as many sites are in rural locations with weak networks that are especially susceptible to harmonics. This means that for the water industry, harmonics can be a major factor in increasing maintenance bills.
“Our harmonics surveys are an excellent way for water companies to get a handle on the harmonics challenges they are facing and begin to manage them.”
Under Ofwat’s latest Asset Management Plan, AMP6, water companies are being encouraged to re-focus attention away from the traditional area of spending less on capital and towards a total expenditure, or TOTEX, approach. This places more emphasis on controlling operational and maintenance costs.
An initial site visit will involve: