Off Grid Energy System
Distributed Energy Storage
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DISTRIBUTED ENERGY STORAGE SYSTEMS (DESS)

 

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MCV has designed a 19” rack mounted 35kW/35kWh lithium-ion battery system with customized control mode functions via power electronics in a small footprint [24” (W) x 36” (D) x 62” (H)]. MCV DESS are scalable up to multi-MW size, capable of meeting various system demand requirements and are designed and fully integrated in the U.S.A.

MCV DESS utilizes advanced control functions hardware that can switch system operations in 25 microseconds, and make a round trip switch in just two cycles. Combining our high capacity cells with an advanced power converter system and software interface is helping us solve many of the unique problems facing electric utility providers today.

MCV Distributed Energy Storage Systems are in testing to prove our system can meet the following generation requirements:
 

 

1. Regulation response- Fluctuating power output up and down in response to control signals from a central system automatic generation control which senses frequency deviation in the system, variations in power flowing in and out on the transmission lines connecting to other power system control areas, then adjusts generator set-points to match generation and load while restoring frequency. Handled via software and a CAT5 internet connection in the main control unit;

2. Governor response- Primary autonomous response of the resource to system frequency on order to stabilize system frequency and match load dynamically;

3. Real-time dispatch or balancing energy- Regular minute by minute adjustment of generation set-points on to match load in an economic way. This adjusts hourly generation schedules to balance load;

4. Renewables balancing- To store renewable resources (such as wind) with fluctuating generation profiles making it difficult to schedule for generation and dispatch. Either large amounts of real-time dispatch energy must be used or requires storage to balance renewable fluctuations especially ramping effects;

5. Daily load shifting- Sharp load peaks raise the cost of energy, as least economical units (such as combustion turbines) are used at peak. Supplying this peak from storage allows the lowest cost of energy to meet peak demand.

6. Reserves, spinning and fast-start- Some generation units are always operated at below full capacity to provide a reserve against the loss of another unit or other large disturbance. This creates a serious economic impact at or close to peak-load conditions, as more units must be partially unloaded to provide reserves. Any generator not fully used causes an opportunity cost that must be met. Meeting these reserves from storage can lower these costs; and,

7. Emissions Improvement- Using conventional units to regulate service or smooth renewables creates an emissions impact. Substituting distributed energy storage for these purposes can help avoid degraded emissions performance.



Wind and solar (PV) power create peaks and troughs in generation output that can be smoothed by an MCV DESS, reducing ramp-rates for medium and large scale solar and wind power plants. Using this power to charge storage batteries ensures a stable level of power output by providing a quick-response to mitigate the effects of cloud cover or lack of wind that contribute to variable energy generation.
 

Community Energy Storage

MCV DESS are already playing a critical role in encouraging development of small commercial renewable energy solutions. In these cases, the main requirement is to shift the power generated during the middle of the day for solar energy, for example, to the peak demand times, mainly in the evening and night time.

An MCV DESS: 1. Can defer the need for utility upgrades;
2. Can be relocated (due to the small footprint) to increase system versatility;
3. When connected to a secondary transformer, can power several houses or small businesses near the load; and,
4. Located closer to the load, can reduce losses on the grid power system by providing continuous service.

During peak periods, power flow fluctuations and other disturbances are further stressing transmission and distribution grids. Increased penetration of renewable energy sources is a source of instability. MCV DESS provide dynamic, rapid support allowing utilities to better manage the introduction of intermittent renewable resources.

Distributed Energy Storage System Data Sheet

For more information, please contact us.