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network user equipment

A technology for network users and equipment, applied in AC network circuits, AC network voltage adjustment, power network operating system integration, etc., can solve problems such as the inability to reliably derive the direction of energy flow

Active Publication Date: 2020-06-09
SMA SOLAR TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this voltage regulation intervention, it is not possible to reliably derive the direction of energy flow from the instantaneous voltage

Method used

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Embodiment Construction

[0039] figure 1 The internal structure of the network user equipment 10 according to the present invention is shown. The network subscriber device 10 has a connection point 11 for connection to the power supply network. This connection can be realized on one-phase or three-phase. A device 13 is connected to the connection point 11 in order to determine the moment of zero crossing of the voltage of the supply network connected to the connection point 11 . Furthermore, the network subscriber device 10 has a receiving unit 12 which is able to receive, in particular, an external time signal as a radio signal. The time signal is passed to the device 13 where it is compared with the instant of the voltage zero crossing in order to determine the time offset between these two instants. The result of the comparison is passed on to the control unit 14 of the network subscriber device 10 , which is for its part connected via the connections 15 , 16 , 17 to the consumer 17 ′, the gener...

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Abstract

The invention relates to a network subscriber device (10) for a power supply network, the network subscriber device having a control unit (14) for controlling the power exchange between the network subscriber device (10) and the power supply network; Means (13) for determining a voltage zero crossing at a connection point (11) of said network subscriber equipment (10) to said supply network; and a receiving unit (12) for receiving a signal at a reference time. In this case, the control unit (14) is configured to determine a time offset between the instant of the voltage zero crossing determined by the device (13) and the received reference instant and controls the The power exchange.

Description

technical field [0001] The invention relates to a network user equipment for a power supply network. Background technique [0002] It is known that the stability of the supply network requires that the sum of the fed-in power corresponds to the sum of the extracted power. The operator of the supply network therefore controls the energy fed in or the power drawn in order to maintain this balance. If an imbalance occurs, the network frequency changes. If the extracted energy exceeds the fed energy, for example, the network frequency drops; if the fed energy exceeds the extracted energy, the network frequency increases. [0003] Since the proportion of distributedly produced energy in Germany is continuously increasing, the number of feeders to which the grid operator has direct access to control the feed-in power decreases. It is therefore a normative requirement for many distributed energy producers that they autonomously control the supplied power as a function of network...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/12
CPCH02J3/12H04W56/00H02J13/0001Y04S40/121Y04S10/52Y04S20/242Y02B70/30Y02E60/00H02J13/00009H02J2310/64H02J2310/14
Inventor A·法尔克
Owner SMA SOLAR TECH AG