FORWARDING OPERATION DATA RELATED TO THE PRESENT OPERATION OF A PLURALITY OF INVERTER UNITS TO A MONITORING UNIT
First Claim
1. A method of forwarding operation data related to a present operation of a plurality of inverter units to a monitoring unit, the inverter units feeding electric power from power generators into a power grid, the method comprising:
- connecting the inverter units and a plurality of intermediate data handling units to the monitoring unit in a communication network of a logical tree architecture, the tree architecture branching towards the inverter units, and several inverter units being connected to at least one intermediate unit;
forwarding operation data from each inverter unit to that intermediate data handling unit to which the inverter unit is connected;
in each intermediate unit connected between respective multiple inverter units from which the operation data are forwarded and the monitoring unit, merging operation data of a same type forwarded from the inverter units connected to the respective intermediate unit to reduce an associated data volume, andfrom each intermediate unit towards the monitoring unit, forwarding the merged operation data.
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Abstract
For forwarding operation data related to the present operation of a plurality of inverter units which feed electric power from power generators into a power grid to a monitoring unit, the inverter units and a plurality of intermediate data handling units are connected to the central monitoring unit in a communication network of logical tree architecture. The tree architecture branches towards the inverter units, and several inverter units are connected to each intermediate unit. The operation data from each inverter unit are forwarded to that intermediate unit to which the inverter unit is connected; and, in each intermediate unit connected between the inverter units from which the operation data are forwarded and the monitoring unit, operation data of the same type forwarded from the inverter units connected to the intermediate unit are merged to reduce their data volume, and only the merged operation data are forwarded towards the monitoring unit.
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Citations
24 Claims
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1. A method of forwarding operation data related to a present operation of a plurality of inverter units to a monitoring unit, the inverter units feeding electric power from power generators into a power grid, the method comprising:
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connecting the inverter units and a plurality of intermediate data handling units to the monitoring unit in a communication network of a logical tree architecture, the tree architecture branching towards the inverter units, and several inverter units being connected to at least one intermediate unit; forwarding operation data from each inverter unit to that intermediate data handling unit to which the inverter unit is connected; in each intermediate unit connected between respective multiple inverter units from which the operation data are forwarded and the monitoring unit, merging operation data of a same type forwarded from the inverter units connected to the respective intermediate unit to reduce an associated data volume, and from each intermediate unit towards the monitoring unit, forwarding the merged operation data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A data handling unit configured to forward operation data related to a present operation of a plurality of inverter units to a monitoring unit, the data handling unit comprising:
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an upward connection port configured to receive requests for values from an upper unit and for forwarding requested operation data to the upper unit, and a downward connection port configured to send requests for values to a plurality of lower units associated therewith and configured to receive the requested operation data from the lower units, wherein the data handling unit, upon receiving a generic request from the upper unit that does not request operation data available in the data handling unit, forwards the generic request to all of the plurality of lower units associated therewith, merges the operation data received in response to the generic request from the lower units to reduce an associated data volume, and forwards the merged operation data to the upper unit. - View Dependent Claims (19)
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20. A data protocol suitable for requesting and forwarding operation data related to the present operation of a plurality of inverter units by and to a monitoring unit, the inverter units feeding electric power from power generators into a power grid, the data protocol comprising:
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a generic request issued by the monitoring unit, the generic request being coded in a key code having a plurality of coding ranges each defining one aspect of the operation data in variable detail depending on an actual setting of the key code in the respective coding range, and the generic request indicating that every unit that is able to forward the requested operation data should do so; and and operation data forwarded by the inverter units in response to the generic request, the operation data having a format enabling a merge of operation data of the same type included in the operation data forwarded by the multitude of inverter units without changing the format. - View Dependent Claims (21, 22, 23, 24)
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Specification