Abstract: A fixing structure of a connector 1 includes a housing 13 and a front holder 15. The front holder 15 includes a detection portion 151, a latching lock 152, and a restriction protrusion 153. The housing 13 includes an accommodation portion 1314, a restriction recessed portion 1315, and a latching portion 1316a. A restriction surface 1533 extending to cross a height direction Z is provided on the restriction protrusion 153, and a contact surface 1315a-1 configured to come into contact with the restriction surface 1533 and support the restriction protrusion 153 is provided on the restriction recessed portion 1315. When the latching lock 152 elastically deforms in the height direction Z, the restriction surface 1533 is in contact with the contact surface 1315a-1.

Abstract: A connector includes a housing with a latching lock and a lever latch section which is independent from the latching lock. A partner connector includes a partner housing with a lock section which is latchable by the latching lock. The lever is changeable between a non-latched state and a latched state, wherein when changing the lever from the non-latched state to the latched state, the lever connects the connector to the partner connector so as to cause the connector and the partner connector to approach each other in a forward-rearward direction. The connector is configured to be fixed to the partner connector by the lever being brought into the latched state and by the lock section being brought into a state in which the lock section is latched by the latching lock.

Abstract: According to an embodiment, a voltage fluctuation suppressing apparatus is provided with a power storage device connected to an electric power system, a basic control unit to control an output of the power storage device, a voltage detector to measure a voltage of a connection point to the electric power system, and an output control unit to divide a control amount to be outputted to the basic control unit into a reactive power command value and an active power command value and to output them. The output control unit is provided with a reactive power upper limit value calculation unit, a reactive power calculation/output unit, and an active power calculation/output unit.

Abstract: According to one embodiment, a system includes a battery to charge power and discharge a direct-current power to a converter, the converter supplying the converted power to a power system, detectors detecting a voltage at a point between the converter and power system, a current output from the converter and effective power from the voltage value and a current value detected, units computing an angular frequency of the voltage output from the converter, based on an effective power value and an output target value of effective power and an output voltage target value of the converter, based on a current value, a set voltage value and an angular frequency, and a controller controlling the converter according to the output voltage target value.

Abstract: According to one embodiment, a system includes modules to detect a node voltage and an output current of a converter, a detector to obtain an effective power value, a system condition detector to detect a power supply condition in the electric system or the operating conditions of devices included in the electric system and then output a first signal, a setting unit to switch a set value to a preset first or second value and then output the set value, a unit to calculate an angular frequency of an output voltage of the converter on the basis of an output of the detector, the value, and an output of the system condition detector, and a unit to calculate a target value of the converter.

Abstract: According to one embodiment, the photovoltaic system includes a memory configured to store power generator characteristics to be applied to the photovoltaic system, a calculation section configured to calculate an output target value to be output by the photovoltaic system using the power generator characteristics read from the memory, an operation target value, system data of a power system, and output data from the photovoltaic system to the power system, and a photovoltaic section configured to supply a corresponding power to the power system based on the output target value calculated by the calculation section.

Abstract: According to an embodiment, a voltage fluctuation suppressing apparatus is provided with a power storage device connected to an electric power system, a basic control unit to control an output of the power storage device, a voltage detector to measure a voltage of a connection point to the electric power system, and an output control unit to divide a control amount to be outputted to the basic control unit into a reactive power command value and an active power command value and to output them. The output control unit is provided with a reactive power upper limit value calculation unit, a reactive power calculation/output unit, and an active power calculation/output unit.

Abstract: A power supply system comprises: a second electric power converter that converts power discharged by electric power storage means to AC power and that converts charging power to the electric power storage means to DC power; a second current detector that detects the current that is output from the second electric power converter; an electric characteristic computation section that calculates the output current IGref and the electrical output torque Te of a virtual power generator, based on the voltage VT, angular frequency ? and voltage set value Vref of a first electric power converter and the second electric power converter, and their connection point (point a) with the power system; a rotor speed computation section.

Abstract: According to one embodiment, a system includes modules to detect a node voltage and an output current of a converter, a detector to obtain an effective power value, a system condition detector to detect a power supply condition in the electric system or the operating conditions of devices included in the electric system and then output a first signal, a setting unit to switch a set value to a preset first or second value and then output the set value, a unit to calculate an angular frequency of an output voltage of the converter on the basis of an output of the detector, the value, and an output of the system condition detector, and a unit to calculate a target value of the converter.

Abstract: According to one embodiment, a system includes a battery to charge power and discharge a direct-current power to a converter, the converter supplying the converted power to a power system, detectors detecting a voltage at a point between the converter and power system, a current output from the converter and effective power from the voltage value and a current value detected, units computing an angular frequency of the voltage output from the converter, based on an effective power value and an output target value of effective power and an output voltage target value of the converter, based on a current value, a set voltage value and an angular frequency, and a controller controlling the converter according to the output voltage target value.

Abstract: A system for controlling an electric device operation includes a plurality of electric devices managed by a consumer associated with a power system and a plurality of control devices for controlling an operation of the electric devices. The system includes an operation time calculation unit configured to calculate a start time of an operation of increasing or decreasing power received from the plurality of electric devices based on a control command for requesting an increase or decrease of power received from the power system such that the start time is different for each of the electric devices. Each of the control devices executes an operation of increasing or decreasing reception power at an operation start time different for each of the electric devices as a result of calculation of the calculation unit.

Abstract: According to one embodiment, the photovoltaic system includes a memory configured to store power generator characteristics to be applied to the photovoltaic system, a calculation section configured to calculate an output target value to be output by the photovoltaic system using the power generator characteristics read from the memory, an operation target value, system data of a power system, and output data from the photovoltaic system to the power system, and a photovoltaic section configured to supply a corresponding power to the power system based on the output target value calculated by the calculation section.

Abstract: A power adjustment apparatus includes a phase shifter including a stator having a stator winding and a rotor having a rotor winding, a winding terminal of one of the stator winding and the rotor winding being connected to a power-system bus, and a winding terminal of the other being connected to the power-system bus via an impedance load, a driver axially coupled to the rotor to drive the rotor, and a controller which gives the driver a command value to adjust the phase difference between the stator and the rotor to a desired value.

Abstract: A power adjustment apparatus includes a phase shifter including a stator having a stator winding and a rotor having a rotor winding, a winding terminal of one of the stator winding and the rotor winding being connected to a power-system bus, and a winding terminal of the other being connected to the power-system bus via an impedance load, a driver axially coupled to the rotor to drive the rotor, and a controller which gives the driver a command value to adjust the phase difference between the stator and the rotor to a desired value.

Abstract: A system for compensating a voltage fluctuation in a transmission line of a power system is such that a power detection circuit detects a voltage and power flow in the transmission line involving a voltage fluctuation to be compensated, a calculation circuit calculates an impedance compensation amount for adjusting a voltage on the transmission line on the basis of the voltage and power flow detected by the detection circuit and a control circuit controls an adjusting device on the power system on the basis of the impedance compensation amount calculated by the calculation circuit.