BKW has filed a patent for an installation that supplies electricity to a subordinate network area. The installation includes a high-voltage storage battery, a conditioning device, a high-voltage distributor, and a synchronization controller. The conditioning device can be controlled based on measurement signals received from a measuring probe, allowing for a seamless switch from isolated operation to integrated operation without interrupting the electricity supply in the subordinate network area. GlobalData’s report on BKW gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on BKW, intelligent HVACs was a key innovation area identified from patents. BKW's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Installation for supplying electricity to a subordinate network area
A recently filed patent (Publication Number: US20230198266A1) describes an installation for supplying electricity to a subordinate network area. The installation includes a first connection to a superordinate network area, which can be selectively established and disconnected using a disconnecting switch. It also features a second connection to the subordinate network area, a high-voltage storage battery with charging electronics, and a first conditioning device with an inverter to condition electrical energy from the battery.
The installation further includes a high-voltage distributor that exchanges electrical energy, a synchronization controller that receives measuring signals from a measuring probe in the superordinate network area, and a controller for controlling the disconnecting switch, high-voltage distributor, and first conditioning device. The first conditioning device is designed to be controlled based on the measurement signals received from the measuring probe. This allows for a seamless switch from isolated operation, where the first connection is disconnected, to integrated operation, where the first connection is established, without interrupting the supply in the subordinate network area. During the switchover, the voltage, frequency, and three phases in the subordinate network area are adapted to match the superordinate network area by the first conditioning device.
The patent also mentions that in integrated operation, the high-voltage storage battery can be selectively charged with energy from a fuel-powered device, the superordinate network area, or the subordinate network area. Additionally, the high-voltage storage battery can deliver energy as required to support the subordinate network area in both isolated and integrated operation. In integrated operation, the battery can also deliver energy to the subordinate and/or superordinate network area to lower its charge level.
The installation includes control devices for controlling generators and loads in the subordinate network area. These control devices have input interfaces to receive power availability data and output interfaces to transmit control data. The patent also describes the use of power line communication signals and real-time generation and consumption data in the control devices.
The patent further discusses the inclusion of a fuel-powered device, such as a genset, for generating electrical energy. This device can be connected to a local fuel storage facility and conditioned by a second conditioning device. The installation may also include a supply module, control module, and power conditioning modules.
The patent concludes with a method for supplying power to a subordinate network area using a mobile backup power system. The method involves connecting the backup power system to the superordinate and subordinate network areas, providing energy from the high-voltage storage battery in isolated operation, matching the voltage, frequency, and phases in the subordinate network area to the superordinate network area based on measurement signals, and restoring the connection between the two network areas.
Overall, this patent describes an installation and method for supplying electricity to a subordinate network area, allowing for seamless switching between isolated and integrated operation and utilizing a high-voltage storage battery and control devices for efficient power management.