We represent manufacturers whose units optimise a site’s power supply to enable financial, energy and CO2 savings, simultaneously improving Power Factor, capacity (MD) and reducing maintenance.
Understanding Voltage Optimisation
What is voltage optimisation?
Voltage Optimisation is an electrical energy saving device which is installed in series with the mains electricity supply. The principle of Voltage Optimisation relies on the fact that electricity consumers are supplied with significantly higher voltages than necessary in order to compensate for losses elsewhere within the Grid.
On this basis around 90% of electricity consumers pay for and use more power than they need to due to the intrinsic over supply of voltage by the Grid.
The basic principle of all Voltage Optimisation equipment is to reduce the voltage level from that of the incoming supply, to a new optimised level allowing for energy reduction.
This voltage reduction can be anywhere between 5% – 15%.
How do I know if Voltage Optimisation is suitable for my business?
We will carry out a site survey for you. This will involve us placing a number of meters throughout the line to measure the flow of electricity within your site. These meters remain on site for between seven to ten days. We then download the data and present our proposal to you.
Our proposal will clearly outline the amount of savings that can be expected and a full breakdown of how they are achieved. The proposal will also detail the capital cost of the equipment and the return on investment (ROI).
We generally, only recommend this as a solution if the ROI is sub three years.
Optimisation and maximisation of resources
Power factor correction equipment can not only substantially reduce your electricity bills, it can also save in other ways. As well as saving you money on demand, it is also a very cost-effective way of increasing the capacity of your main cabling by up to 50%.
For example a 0.7 power factor (which is quite common), when properly corrected, will increase your main cable capacity by 30% and could decrease your relevant, electrical maintenance factors by a similar figure.
Compare your latest electricity bill against the same billing period for last year, any inexplicable increases of 10% – 20% or more per annum on your demand component may be due to low power factor. This may need power factor correction, or if power factor correction equipment already exists, it may need servicing, or it may need to be added to in size because your business has expanded and it may be severely over-extending its original-designed capacity.
Benefits of Voltage Optimisation for Business
By reducing power consumed electricity costs are reduced.
Financial Saving
Reduced electrical burden on cables and electrical components.
Extended equipment life
Provide additional capacity for other loads to be connected.
Increase load capacity
Lower carbon emissions and fossil fuel depletion by power stations.
Environmental benefit
Understanding Power Factor Correction
Power factor correction equipment can not only substantially reduce your electricity bills, it can also save in other ways. As well as saving you money on demand, it is also a very cost-effective way of increasing the capacity of your main cabling by up to 50%.
For example a 0.7 power factor (which is quite common), when properly corrected, will increase your main cable capacity by 30% and could decrease your relevant, electrical maintenance factors by a similar figure.
Compare your latest electricity bill against the same billing period for last year, any inexplicable increases of 10% – 20% or more per annum on your demand component may be due to low power factor. This may need power factor correction, or if power factor correction equipment already exists, it may need servicing, or it may need to be added to in size because your business has expanded and it may be severely over-extending its original-designed capacity
Transformers and induction motors
Transformers and induction motors are a prime cause of low power factor for many businesses. Poor power factor is an issue especially for businesses with large numbers of small fractional horsepower motors, those who purchase cheap or poorly made motors, and those having oversized, under-loaded motors.
Most small fractional horsepower motors have low power factors in the 50 to 60 percent range. As the rated horsepower of the motor increases, in general, the power factor of the motor at full load increases. Therefore, larger horsepower motors have better power factors than small horsepower motors if each motor is properly loaded.
Power factor correction capacitors
A poor power factor can be improved by adding power factor correction capacitors to the plant’s distribution system. Correction capacitors provide needed reactive power (kVAr) to the load. Therefore, the Electricity Supply Company is freed from having to supply it. Power factor correction capacitors reduce the total current supplied by the Electricity Supply Company to the load and as a result the distribution system capacity is increased.
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What is an energy management company and what does it do?An energy management company is a company in charge of providing services and solutions to improve energy efficiency and sustainability in buildings, industries or municipalities. Its goal is to optimise energy use and reduce costs through the implementation of technologies and measures that enable more efficient consumption. The activities and services that energy management companies can perform include: Energy audit: This consists of carrying out an exhaustive analysis of the energy installations and processes of a company or entity, in order to identify opportunities for improvement. Design and implementation of energy management systems: Responsible for developing and implementing a strategic plan for efficient energy management, setting clear objectives and targets and proposing measures and technologies to achieve them. Installation of measurement and monitoring systems: These systems allow real-time measurement of energy consumption and the detection of possible deviations or anomalies that may arise. Energy efficiency advice and consultancy: They guide companies on how to improve their energy efficiency and reduce their carbon footprint by adopting sustainable measures and technologies. Renewable energy implementation: Helping companies to integrate renewable energy sources into their processes, such as solar, wind or biomass, which helps to reduce their dependence on fossil fuels and reduce their greenhouse gas emissions. And much more
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Why is it important to work with an energy management consulting?Working with an energy management company can be beneficial for a company for several reasons: Cost reduction: An energy management company will analyse and optimise a company's energy use, which can result in a significant reduction in energy costs. Improved energy efficiency: The energy management company will help identify and correct possible inefficiencies in energy use, which in turn will help reduce consumption and costs. Compliance with regulations and standards: The energy management company is also responsible for ensuring that the company complies with regulations and standards related to energy use, avoiding potential fines and penalties. Reducing environmental impact: By improving energy efficiency and using renewable energy sources, the company can also reduce its environmental impact and contribute to sustainability.
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Why Digren Energy?Since 2012 we have been helping all business sectors and local authorities to save and manage their energy. Our approach is focused on reducing consumption, we achieve this through our personalised and continuous strategy over time, we do not limit ourselves to the first study, we will keep in touch with you to always offer you the best deal. As energy consulting firm, we work with companies to manage energy costs, ensuring the best energy solutions are found to reduce consumption.
Blocking reactors
In most cases it is necessary to reduce the effects of the harmonic currents. One way of reducing harmonic currents is to install an inductance (blocking reactor) in series with the capacitor. The blocking reactors protect the electrical installations and equipment but it does not eliminate the harmonics.
The reactor value should be calculated and designed in order to reduce the resonant frequency of the circuit to a value lower than that of the lowest harmonic in the system. A capacitor equipped with a filter reactor is protected from harmonics regardless of the layout of the network to which it is connected.
Except in some cases when switching in steps the inductance and capacitance values could add up to equal one of the harmonic frequencies in the system causing resonance.
Capacitor ratings
Power factor correction capacitors are rated in electrical units called “VAr”. One VAr is equivalent to one volt-ampere of reactive power. VAr is the unit of measurement for indicating just how much reactive power the capacitor will supply.