The present disclosure provides systems and methods for managing electrical energy generated by a renewable microgrid. One or more processors of a system may store priorities for one or more consumer loads; forecast an amount of available electrical energy for a time period; allocate a first electrical energy amount to a first consumer load to a first energy limit for the time period; determine more electrical energy is forecast to be available from the RES or the ESS for the time period; identify a second consumer load of the one or more consumer loads; allocate a second electrical energy amount to the second consumer load for the time period; and direct electrical energy from the RES or the ESS to the first and second consumer loads according to the allocations.

Provided herein are embodiments of a programmable microgrid control system that includes programming software tools capable of modeling, analyzing and monitoring power system especially AC, DC and hybrid microgrids. The monitoring feature of the software tool allows tools to communicate with a real system to acquire online data of power system assets such as conventional and renewable energy sources, transformers, and electrical loads.

An improved EMS (Energy Management System) of ESS (Energy Storage System)—connected photovoltaic power system is provided, where the economic efficiency of the microgrid power transaction is maximized by minimizing the amount paid to the power system as a result of optimal operation as to the energy supply and demand in the process of transacting power surplus/shortage with the power system, the responsiveness to passive resource energy forecasting of supply and demand is improved by resolving the uncertainty of solar power generation forecasting and load forecasting, the deterioration of the available storage capacity of ESS is minimized, and contribution to solving the nation's power supply shortage is made by the operation based on the detailed identification of energy storage status of ESS.

An EMS includes a control unit that controls a power generation facility and a power adjustment unit that adjusts an amount of supply of supply power. The control unit includes: a reverse power flow suppression process determination unit; a priority decision unit that decides a priority for adjusting an amount of power generated for the two power generation devices of the power generation facility on the basis of a predicted degree of fluctuation in load power; and a device control unit that controls the power generation facility such that the amount of power generated is adjusted in descending order of the priority decided by the priority decision unit when the reverse power flow suppression process determination unit determines to reduce the amount of power generated by the power generation facility.

Methods, systems, and devices for portable load balancing and source optimization are described herein. One portable load balancing and source optimization system, includes one or more electric generators that supply three phase electrical power, at least one sensor to sense whether the three phases have become unbalanced beyond a threshold amount, a set of contactors that enable the contacts of the three phases to be changed to adjust the balance of the three phases, and a controller to determine which reversible contactors of the set of contactors to change to adjust that balance of the three phases based on information from the sensor.

A method and apparatus is disclosed relating to smart Microgrids or off-grid solar systems with grid power integration supported by AC assisted off-grid power inverters that can (1) intelligently and selectively pull power from one or multiple DC sources including solar panels, wind generators, and batteries based on certain criteria; (2) invert DC power to AC power as generated AC power; (3) intelligently pull power from a connected AC source including grid AC, a gas generator, or a wind generator as input AC power; (4) combine the generated AC power with the input AC power; (5) supply the combined AC power, or the generated AC power, or the input AC power to an off-grid circuit to power various types of AC loads; (6) send no power to the connected AC source; (7) maximize DC power production; (8) minimize the consumption of input AC power; and (9) achieve good system performance under DC and AC power variations and load changes.

In one embodiment, a first electrical network includes one or more first electricity producing elements, and a first conductive path electrically couples at least some of those elements to an end user's electrical wiring, which is coupled by a second conductive path to one or more second electricity producing elements of a public utility electrical network. A switch coupled between the first conductive path and the end user's electrical wiring and between the second conductive path and the end user's electrical wiring electrically isolates the first electrical network from the public utility electrical network. Based on a determination of whether an amount of electricity used by the end user exceeds an amount of electricity the first electrical network is capable of providing to the end user, the switch either draws electricity only from the first electrical network or from both the first electrical network and the public utility electrical network.

The present invention relates to a system for controlling microgrid facilities. In particular, the microgrid control system provided is capable of controlling multiple facilities according to characteristics of the facilities in order to achieve economic efficiency, environmental friendliness, and continued operability. The microgrid control system for controlling the operations of the multiple power facilities is provided with: a power supply activation/suspension planning unit that has a prediction unit for predicting outputs or loads of power supply facilities or load facilities and a prediction unit for predicting prediction errors contained therein; and an economical load allocation unit that determines command values related to the distribution of loads to be borne by currently running power supply facilities.

A self-operated incinerator system is disclosed. The self-operated incinerator system comprises: an incinerator; a steam boiler configured to receive waste heat from the incinerator so as to produce steam; a turbine device configured to generate a turbine rotational force by receiving the steam produced by the steam boiler; a generator configured to generate power by using the turbine rotational force generated by the turbine device; and a storage battery configured to store the power generated by the generator and to use the power for starting or normally operating at least one from among the incinerator and the steam boiler.

A method for controlling a virtual generator including at least one renewable power source, an accumulation system including a power and/or energy reserve, an inverter and a control law, the virtual generator delivering an active P/reactive Q electrical power of voltage V and of current I to a microgrid, the voltage V and current I having a frequency f, the active P/reactive Q electrical power controlling, via droop control, the frequency f and the RMS voltage V.sub.rms of the voltage V, respectively, the method including control of the virtual generator via the control law for which it carries out an adjustment of the active P/reactive Q power delivered to the microgrid, the adjustment being capable of compensating for a variation in the active/reactive power consumed by the microgrid.