Method for establishing a wireless communication system in a high-voltage power converter station and a high-voltage power converter station
A method for establishing a wireless communication system in a high-voltage power converter station is provided. The high-voltage power converter station includes a plurality of power devices. The wireless communication system includes a plurality of wireless communication devices, some of which are associated with a power device such that a power device and a wireless communication device together form a wireless power electronic module. The high-voltage power converter station further comprises at least one wireless networking device for providing a communication interface between the plurality of wireless communication devices and a controller configured to control the power devices. The controller determines at least one communication path providing a signal quality above a threshold based on indications of signal quality for a plurality of channels established either between a wireless networking device and a wireless power electronic module or between a wireless communication device and a wireless power electronic module.
1 . A method for establishing a wireless communication system in a high-voltage power converter station including a plurality of power devices, wherein the wireless communication system includes a plurality of wireless communication devices, some of which being associated with a power device such that a power device and a wireless communication device together form a wireless power electronic module, and at least one wireless networking device for providing a communication interface between the plurality of wireless communication devices and a controller configured to control said power devices, the method comprising:
obtaining, at the controller, an indication of signal quality for each one of a plurality of first channels, wherein a first channel corresponds to a communication path between one of said at least one wireless networking device and a wireless communication device of the plurality of wireless communication devices using one of a plurality of radio beam directions;
obtaining, at the controller, an indication of signal quality for each one of a plurality of second channels, wherein a second channel corresponds to a communication path between a wireless communication device and a wireless power electronic module of the plurality of wireless power electronic modules using one of a plurality of radio beam directions; and
determining, by the controller, for every wireless power electronic module, at least one communication path from the controller to the wireless power electronic module based on the indications of signal quality obtained for the plurality of first channels and the plurality of second channels, wherein the determined communication path provides a signal quality above a threshold.
2 . The method of claim 1 , wherein the controller is configured to communicate with a wireless power electronic module along at least two communication paths providing the two highest signal qualities.
3 . The method of claim 1 , wherein the controller is configured to prioritize the determined communication paths with respect to signal quality.
4 . The method of claim 1 , wherein information about the at least one determined communication path is transmitted to said at least one wireless networking device and the wireless communication devices.
5 . The method of claim 1 , wherein the controller is configured to, during operation, communicate with a wireless power module along a communication path providing the highest signal quality, and to switch, upon determination that said communication path is inactive if a status message is not received from the wireless power module within a predetermined time period, to a communication path providing the second highest signal quality.
6 . The method according to claim 1 , wherein obtaining an indication of signal quality for a first channel of the plurality of first channels includes:
transmitting a first sounding message from the wireless networking device to the wireless communication device,
receiving, at the wireless networking device, a message from the wireless communication device in response to the first sounding message, and
transmitting, from the wireless networking device to the controller, information about signal quality of the first channel based on the message received in response to the first sounding message.
7 . The method of claim 1 , wherein obtaining an indication of signal quality for a second channel of the plurality of second channels includes:
forwarding, from the wireless communication device to the wireless power electronic module, a second sounding message received at the wireless communication device from a wireless networking device of said at least one wireless networking device,
receiving, at the communication device, a message from the wireless power electronic module in response to the second sounding message, and
transmitting, from the wireless communication device to the controller via the wireless networking device, information about signal quality of the second channel based on the message received in response to the second sounding message.
8 . The method of claim 1 , wherein a wireless networking device and a wireless communication device each includes an antenna element for directing their respective radio beams and wherein a radio beam direction is established for obtaining an indication of quality of a first channel by a setting of the antenna element of the wireless networking device and a setting of the antenna element of the wireless communication device.
9 . The method of claim 1 , wherein each one of the plurality of wireless communication devices includes an antenna element for directing their respective radio beams and wherein a radio beam direction is established for obtaining an indication of quality of a second channel by a setting of the antenna element of the wireless communication device and a setting of the antenna element of the wireless communication device of the wireless power electronic module.
10 . The method of claim 8 , wherein a radio beam direction is established by beamforming or by manual setting of the respective antenna elements.
11 . The method of claim 1 , wherein the plurality of first channels includes all communication paths between every one of said at least one wireless networking device and every one of the plurality of wireless communication devices.
12 . The method of claim 1 , wherein the at least one determined communication path between the controller and a wireless power electronic module includes at least one of (i) a direct communication path between a wireless networking device and said wireless power electronic module and (ii) a communication path including a wireless communication device acting as a relay between a wireless networking device and said wireless power electronic module.
13 . The method of claim 1 , wherein the controller is configured to determine that a wireless power electronic module is faulty if it is determined that there is no communication path from the controller to said wireless power electronic module that provides a signal quality above the threshold.
14 . The method of claim 1 , wherein the controller is configured to communicate a respective communication frequency to every wireless networking device and to every wireless power electronic module, and wherein every wireless networking device and every wireless power electronic module is configured to communicate at their respective communication frequency.
15 . A high-voltage power converter station comprising:
a plurality of power devices;
a plurality of wireless communication devices, some of which being associated with a power device such that a power device and a wireless communication device together form a wireless power electronic module,
at least one wireless networking device for providing a communication interface between the plurality of wireless communication devices and a controller configured to control said power devices,
wherein the controller is configured to:
obtain an indication of signal quality for each one of a plurality of first channels, wherein a first channel corresponds to a communication path between one of said at least one wireless networking device and a wireless communication device of the plurality of wireless communication devices using one of a plurality of radio beam directions;
obtain an indication of signal quality for each one of a plurality of second channels, wherein a second channel corresponds to a communication path between a wireless communication device and a wireless power electronic module of the plurality of wireless power electronic modules using one of a plurality of radio beam directions; and
determine, for every wireless power electronic module, at least one communication path from the controller to the wireless power electronic module based on the indications of signal quality obtained for the plurality of first channels and the plurality of second channels, wherein the determined communication path provides a signal quality above a threshold.
16 . The converter station of claim 15 , wherein wireless communication within the power converter station corresponds to communication at frequencies from 3 GHz to 300 GHz or from 0.1 THz to 10 THz.
17 . The method of claim 2 , wherein the controller is configured to prioritize the determined communication paths with respect to signal quality.
18 . The method of claim 2 , wherein information about the at least one determined communication path is transmitted to said at least one wireless networking device and the wireless communication devices.
19 . The method of claim 3 , wherein information about the at least one determined communication path is transmitted to said at least one wireless networking device and the wireless communication devices.
20 . The method of claim 1 , wherein wireless communication within the power converter station corresponds to communication at frequencies from 3 GHz to 300 GHz or from 0.1 THz to 10 THz.