An electrical substation for a wind farm is configured to raise or to lower the voltage of the electricity generated by wind turbines of the wind farm in order to ensure the transmission thereof to an electricity distribution network. It includes n modules, n being an integer at least equal to 2, these modules being identical in terms of shape and exterior dimensions. Each module encloses at least one electrical transformer configured to raise or to lower the voltage, these modules being linked to one another so as to be able to deliver to the network an overall electrical power equal to the sum of the powers of each transformer.

Electrical power distribution system for supplying a set of fixed-frequency loads and a set of variable-frequency loads, includes a set of at least one fixed-frequency AC voltage generator and a set of at least one variable-frequency AC voltage generator, a DC distribution network supplying the variable-frequency loads by means of inverter stages, a first set of rectifier stages connected between the fixed-frequency generators and the distribution network, and a second set of rectifier stages connected between the variable-frequency generators and the DC distribution network. The first set of rectifier stages includes bidirectional rectifiers capable of providing a bidirectional transfer of power and protection means against fault currents connected between the bidirectional rectifiers and the distribution network.

A power control apparatus has a switch configured to interrupt power supply from a system power when the switch has detected a drop of voltage from the system power below a threshold, a first power controller configured to receive a voltage drop signal supplied from the switch unit, a first power storage unit connected to the first power controller, a second power controller configured to receive a discharge start signal supplied from the first power controller, a second power storage unit connected to the second power controller, and a rotary machine generator that receives an operation control signal supplied from the second power controller or the second power storage unit.

A control method for dynamically controlling active and reactive power capability of a wind farm includes obtaining one or more real-time operating parameters of each of the wind turbines. The method also includes obtaining one or more system limits of each of the wind turbines. Further, the method includes measuring at least one real-time wind condition at each of the wind turbines. Moreover, the method includes continuously calculating an overall maximum active power capability and an overall maximum reactive power capability for each of the wind turbines as a function of the real-time operating parameters, the system limits, and/or the real-time wind condition. Further, the method includes generating a generator capability curve for each of the wind turbines using the overall maximum active and reactive power capabilities and communicating the generator capability curves to a farm-level controller of the wind farm that can use the curves to maximize the instantaneous power output of the wind farm.

A method for optimizing reactive power generation of an electrical power system includes generating, via a plurality of cluster-level controllers, a cluster-level reactive power command for each cluster of electrical power subsystems based on a system-level reactive power command. The method also includes determining, via the cluster-level controllers, a subsystem-level reactive power command for each of the electrical power subsystems based on the cluster-level reactive power command. Further, the method includes evaluating, via a plurality of subsystem-level controllers, reactive power capability of a plurality of reactive power sources within each of the electrical power subsystems. Moreover, the method includes generating, via each of the subsystem-level controllers, an actual reactive power for each of the electrical power subsystems based on the evaluation by allocating a portion of the subsystem-level reactive power command to each of the plurality of reactive power sources.

A system for variable speed drives using generators adjusting the motor frequency having a plurality of main generators 1, 2, 3 and 4 as the means of adjusting a plurality of AC motors frequency, a processor is provided that opens a main bus tie breaker in a power system to create two separate power systems, power source A and power source B, wherein power source a is powered by a generator 1 and a generator 2. and power source b is powered by a generator 3 and a generator 4, wherein the generators 1-4 are configured to operate on a droop curve wherein the output frequency of the generator is slightly reduced as the load increases.

This power generation apparatus, power generation system, and power generation method advantageously control distributed power sources as a whole. A power generation apparatus includes a power generator that generates power to supply to a load and includes a controller that controls output of power generated by the power generator. The controller controls, when the total output of power generated by the power generation apparatus and other power generation apparatuses connected thereto exceeds the power consumption of the load, to adjust output of power generated by the power generation apparatus and the other power generation apparatuses based on at least one of information indicating the power generation efficiency and information indicating the degree of degradation of the power generation apparatus and the other power generation apparatuses.

A power supply assembly is disclosed comprising a power supply unit adapted to provide power to a user's device in accordance with power requirements of the user's device, a power connection control unit and an AC controllable switch, configured to connect and disconnect AC power source from the power supply unit in response to respective control provided by the power connection control unit, wherein the power connection control unit and the AC controllable switch are configured to maintain one of two states without consuming electrical power, wherein the two states of the power connection control unit are set state adapted to switch on the AC controllable switch and unset state adapted to switch off the AC controllable switch and wherein when the power supply assembly is in its unset state it is completely disconnected from the AC power source.

A system for monitoring and optimizing fuel consumption by a genset at an oil rig is described. Gensets require large amounts of fuel to initiate and to maintain in a standby, idling position. The system accesses data in a drill plan to determine the present and future power requirements and initiates gensets if needed; otherwise gensets can be shut down. Excess power can be stored in a power storage unit such as a capacitor, battery, or a liquid air energy storage unit.

A system and method for controlling an operation of devices in a power distribution network. The method determines that there is a power loss in the network as a result of a fault and one or more teams is not receiving power and performs a switching process in switching devices to prevent fault current from flowing to the fault. The method initiates a power restoration process to control the open and closed status of switching devices to isolate the fault and performs the power restoration process by the leader device in a division that the fault is occurring that includes opening and closing switching devices so that power is provided to all of the teams except the team that the fault is in. The method reconfigures the divisions based on which switching devices are now open and selects new leader devices based on the reconfiguration of the divisions.