摘要:
Die Erfindung betrifft ein Steuermittel (4a', 4b', 5) für wenigstens einen elektrischen Verbraucher (3a, 3b) - mit einem Eingang zur Verbindung mit einem Wechselstromnetz (1),
wobei, dass das Steuermittel - einen Sensor zur Erfassung der Netzfrequenz einer am Eingang zur Verbindung mit dem Wechselstromnetz (1) anliegenden Spannung und/oder - einen Sensor zur Erfassung der Netzamplitude der am Eingang zur Verbindung mit dem Wechselstromnetz (1) anliegenden Spannung, - eine Steuereinheit zur Ermittlung einer Information über eine zukünftige Wirkleistungsaufnahme und/oder eine zukünftige Blindleistungsaufnahme des wenigstens einen elektrischen Verbrauchers aufweist, - wobei die Steuereinheit wenigstens eine Schnittstelle zur Bereitstellung der Information hat.
摘要:
The invention relates, inter alia, to a method for operating an energy distribution network (10) where the energy distribution is monitored by at least one control device. In order to optimise the operating state of said energy distribution network (10), modification actions are implemented with the aim of improving the operating state of said energy distribution network (10). According to the invention, prior to implementing a modification action, the control device verifies whether the amount of improvement in the operating state of the energy distribution network (10) outweighs the amount of wastage from the energy distribution network (10) caused by implementation of the modification action, and only implements said modification action when this is the case.
摘要:
We describe a modular adjustable power factor renewable energy inverter system. The system comprises a plurality of inverter modules having a switched capacitor across its ac power output, a power measurement system coupled to a communication interface, and a power factor controller to control switching of the capacitor. A system controller receives power data from each inverter module, sums the net level of ac power from each inverter, determines a number of said capacitors to switch based on the sum, and sends control data to an appropriate number of the inverter modules to switch the determined number of capacitors into/out of said parallel connection across their respective ac power outputs.
摘要:
A photovoltaic system includes solar cells and photovoltaic inverters configured to convert direct current generated by the solar cells to alternating current. Grid voltage at the point of interconnection (POI) of the photovoltaic system and the power grid is measured and compared to a setpoint. A control signal is generated based on the measured grid voltage. The control signal is provided to the photovoltaic inverters. The control signal is adjusted to cause the photovoltaic inverters to generate or absorb reactive power to respond to transient grid voltage changes.
摘要:
A method and system for use in controlling an electric network are provided. The system includes an Integrated Volt-VAr Control (IVVC) component configured to determine optimization parameters for slow dynamics electromechanical devices and fast dynamics DER devices coupled to the network. The slow dynamics devices are controlled by a present state of the electric network and a voltage rise table that is adaptively updated in real-time using a command output, or a power flow-based complete optimization routine that generates optimal setpoints for the traditional controllable assets and for at least some of the fast dynamics DER devices. The fast dynamics devices are controlled locally using a control algorithm that uses a reactive power contribution based on IVVC settings, based on photo-voltaic (PV) plant active power variations, based on power factor, or based on a voltage of the local electric network.