Key functions:
- Power outage prevention
- Active mitigation of harmonic distortions
- Voltage sag mitigation
- Voltage stabilization
- Power factor improvement
- Flicker mitigation
- Load balancing
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Merus Uninterrupted Power Quality (UPQ) is an innovative concept, combining the functionalities of a UPS and an active harmonic filter into a single robust solution. UPQ protects mission critical processes from supply interruptions and voltage sags while maintaining supply voltage quality by compensating harmonic currents and the reactive power fluctuations of non-linear loads.
Merus UPQ has two operation modes. In secured supply conditions, it operates in power quality mode, performing active filtering of harmonic distortions as well as load balancing and flicker mitigation. When it detects a voltage sag or power outage in the supply network, it shifts to power protection mode to protect against critical loads. Merus UPQ is available from low up to medium voltage levels. Merus Power can supply a complete turnkey solution.
Merus UPQ has two operation modes: power quality mode and power protection mode.
In the event of power outages or voltage sags, the Merus UPQ activates power protection mode. During this mode, real active power and real reactive power are provided to the loads, ensuring complete immunity to the mission critical processes from utility power interruptions, voltage sags and swells. This guarantees maximum system availability and reliability for mission critical processes.
After the fault is cleared, Merus UPQ returns to its normal power quality operation mode, where it actively filters harmonic distortions up to 50th order, mitigates flicker, balances loads, improves power factor and controls voltage.
Compared to conventional power protection technologies, Merus UPQ solution gives you lowest operational costs. Lifetime operational costs are defined by UPQ power quality operation mode, as utility power connection is mostly available. In this operation mode the UPQ is shunt connected with the load giving higher efficiency. Therefore it offers lowest operational costs compared to any other power protection device like conventional UPS or rotary UPS which are connected in series.
UPQ’s superior efficiency can be seen directly in your electricity bill
In an example case, where the need is 1500kW maximum power protection with 80% average loading and the cost of electricity is 0,10€ per kWh, UPQ saves 37 480 € per year, compared to conventional UPS systems.
Ultra capacitors (UC) are utilized as a default energy storage in UPQ due to their superior power density, cycle life and life time. As a default, UPQ ultra capacitor energy storage offers full charge cycle life of 10 years with more than 500 000 operations at an average ambient temperature of +25C. When the ultra capacitor energy storage reaches the end of designed life cycle, specified nominal energy may no longer be reached at full, but the device does not become obsolete. The ultra capacitor cycle life and life time are defined by depth of discharges, voltage stress and ambient temperature. By request it is possible to design an energy storage solution which can meet a cycle life of more than 1 000 000 operations at average ambient temperature of +25C within 15 years.
Unlike conventional UPS systems, Merus UPQ does not limit the short circuit current. Therefore Ik’(S) equals Ik’(L). This unique feature enables Direct On Line (DOL) motor starting and is further improved by UPQ’s real time reactive power compensation. Since the short circuit current is not limited, also the selectivity of the fuse protection downstream from the UPQ’s main bus operates like in the systems connected directly to the grid.
Merus UPQ is built on modern power electronics technology, ensuring extremely fast and effective response to power outages, voltage sags and a number of other power quality disturbances. Such dynamic real time response ensures uninterrupted power for business processes. During power quality mode, it filters harmonic distortions and improves power factor in less than 1 millisecond. In an event of a power outage or a voltage sag, switching to power protection mode takes place in less than 1.8 milliseconds. Such dynamic performance ensures maximum uptime and system availability for crucial business processes.
Conventional solutions in the market offer incomplete protection, which is often limited to either supply side or load side challenges. Merus UPQ is a comprehensive and effective protection package from both, supply as well as load side disturbances. It brings complete benefits of several products e.g. UPS, power conditioners and active harmonic filters in a single robust solution.
Full scalability is achieved through modularity in both power electronic units as well as in selection of energy storage capacity and media. An application to well demonstrate UPQ’s modularity is a common bus power system which is fed by parallel running redundant transformers. Such system can be protected by UPQ system equipped with dual static switch system. Freedom of customization from choosing different UPQ power module, static switch and energy storage capacity, gives engineering consultants and plant owner opportunity to optimize the investment cost according to the desired protection time, cost of lost production and environmental considerations.
Entire facility protection with flexibility of connecting Merus UPQ at any voltage level: Merus UPQ provides superior connectivity options, unlike any other solution. It could be easily connected at any voltage level up to 38.5kV. Such flexibility allows designing of an economically viable power protection solution, utilizing the most cost optimized energy storage media for entire production processes. This excellent feature keeps production downtime to the minimum in your facility.
Merus UPQ comes by default with Ultra Capacitors (UC)/Super Capacitors which provides excellent protection for short-term interruptions. However, Merus UPQ solution can be tailored for applications requiring power protection for extended periods of time. UPQ Solution can be designed for applications requiring power back up of minutes with the use of Lithium-Titanate (LTO) Batteries as energy storage media. However, if the power protection is needed for even longer period of time, Lithium-Ion (Li-Ion) batteries will be an ideal energy storage media.
Sophisticated touch screen panel provides advanced monitoring options, both on-site and off-site. Remote monitoring is possible through Ethernet, which keeps you updated through the reporting functionality. Modern monitoring and reporting functions feed the user with relevant information and has the option to be integrated to other SCADA systems via smart communication features.
