Methods of injecting power or reducing usage to lower utility demand charges and improve power quality. The response to or management of spikes in power usage or demand, during an interval of utility metering such that from interval to interval power usage remains as close as possible to a consistent and clean power demand from the utility or grid.
Not to leave the grid during peak hours, but to flatten demand during peak hours.
Most of all Spikeshaving™ is about energy management, not producing energy.
To minimize demand charges first, then address energy cost (kWh) as makes sense.
Customers working with utilities to maximize savings by reducing cost and risk for utilities.
Algorithms and code to minimize demand charges = spikeshave™
Convert the top kW of demand charges to a kWh cost.
If there is a demand charge of $25 per kW in a 15 minute interval with a 12 month period before the demand charge drops off, then that 0.25 kWh cost $1200 per kWh ($25 x 12 months/.25 kWh) not including the energy charge, which is usually only a few cents.
A 250 Whr device can be build for less $250. If deployed at the right moment to inject enough power to cancel a kW of demand charge can net a 500% return on the first use. Of course this opportunity only comes once a year.
Challenge, when to deploy. Threshold could be when previous peak is met. If batteries are quick charge, there may be a few cycles in the day when the batteries are charged and discharged. When a lower threshold is met battery would start charging.
System will require analytics and AI to determine when extra power needs to be applied.
Addresses the cost of the equipment needed to provide power to a location. A utility must purchase all the generators, transformers and power lines to provide that power to the customer. Even though that level of power is needed only once a year. This equipment must be paid for. A utility will reward a customer for keeping a consistent use of power with lower demand charges.
kWh charges can be viewed as the cost of fuel. The utility only incurs these charges when a customer needs energy. When energy is provided by fossil fuels this is much of the cost of for a utility.
With wind and solar there is no fuel cost, all the cost is in the building of the plant. This means most of the utility bill will be demand charges of the cost of the equipment not kWh charges, if the utility passes on to their customers the characteristics of their costs. Then demand charges will go up, and kWh or energy cost go down. The energy is “free”, but the equipment to produce it is not.
In the life of a conventional fossil fuel plant, the fuel cost are much high than the cost of building the plant. This why most of the bill from the utility presently is for kWh or energy usage.
Voltage stabilization using synchronous generators or inverters.
By running rectifying chargers from one phase that has low usage to charge batteries, while using inverters to inject power from the batteries on high usage phases total power can be balanced between all three phases.
Battery stored power can temporary backup power as diesel or natural gas generators are brought online in an outage or time of high demand if needed.
Minimize Demand charges and energy usage.
Smartly inject power at the right time to minimize demand charges.
Reducing and Flattening kVA demand By analyzing:
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