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Connectors For Modular Energy Storage

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Connectors For Modular Energy Storage
Connectors For Modular Energy Storage

Video: Connectors For Modular Energy Storage

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Video: JAE Battery Connectors for Energy Storage Overview (DW Series) 2023, February

A power supply based on renewable energies requires electrical storage capacity to compensate for voltage fluctuations in the network due to fluctuating generation from the sun and wind. Electricity storage systems increase flexibility: they reduce surpluses on the generation side and thus relieve the grid. On the load side, they help to reliably cover short-term demand peaks. In this way, a higher degree of utilization of the (decentralized) generation plants is achieved and the reliability of the network is increased.

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The storage systems are integrated into the intelligent network management ("Smart Grid") via a powerful communication infrastructure. They have a modular structure so that they can be flexibly adapted to different generation capacities and can be set up redundantly. In the event of failures, individual modules can be replaced without interrupting the operation of the overall system.

Interfaces for modular storage systems

Powerful storage systems usually consist of several storage cabinets that are arranged in a modular manner to form containers and contain drawer-shaped storage units inside. Harting connectors provide the necessary interfaces for the modular structure: They are easy to assemble and facilitate service - and thus help to limit downtimes.

The core of the solution is the Han Docking Frame in connection with the modular connector series Han-Modular. The docking frame ensures reliable and process-safe plug-in contacting of the storage units. The solution from the manufacturer Rittal is an example. The drawers in the storage cabinets are equipped with two Han 200 A modules for power transmission, supplemented by two Han megabit modules for data exchange. The Han Docking Frame is floating between the drawer and the power rail. It offers enough clearance (tolerance compensation) so that the pins on the drawers can be plugged onto the sockets of the Han-200-A module accurately and smoothly (guided insertion). The sockets are screwed directly onto the power rail on the rear wall of the cabinet,which reduces the wiring effort for the storage cabinet.


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Docking frame offers space for 2 to 6 modules

The Han Docking Frame is suitable as a standard for energy storage systems. In addition to the high-current module, there are 50 other suitable interfaces available from the Han-Modular range. The docking frame is available in versions with space for 2 to 6 modules. Depending on the requirements, the modules, integrated in a Han modular articulated frame, can be integrated into the drawer system of the storage unit. The modular program includes power modules up to 200 A, multi-pin signal modules, all known Ethernet interfaces and other robust communication interfaces.

Due to their modularity, battery storage systems are easily scalable. Using the Han Docking Frame increases the standardization of battery storage cabinet construction. Pre-assembled memory modules can be quickly assembled into storage cabinets, and the wiring effort is eliminated.

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Advantages when installing in the field

There are also advantages when installing in the field. Fixed wiring is still an often used alternative to the docking frame. It is very complex, especially for larger quantities. A modular battery storage usually achieves outputs between 1 MW and 3 MW. Around 80 drawers are required per 1 MWh of storage capacity. The plug-and-play solutions in connection with the Han Docking Frame make work considerably easier. And even after installation, the frame helps to save time: Replacing and maintaining the storage units is easier. Even employees who are not electrical specialists can easily replace the storage elements since no installation work is required.

Energy storage systems are a central element in the strategy to reduce and avoid CO 2 emissions. In addition, the trends towards modularization and decentralization can be observed in all sectors involved in energy generation. The technical and financial feasibility will be decisive for the market acceptance of the storage systems: The scalability of the systems based on suitable interfaces is therefore an important component for their commercialization.


Intelligent connectors - when components communicate

Communicate securely with the power generation and distribution system

Battery storage systems are linked to energy generation systems. In order to be as efficient as possible, they must communicate extensively with the other components of the energy generation and distribution system. Here, the Harting portfolio offers other components that can contribute to a holistic solution: Switches in conjunction with pre-assembled patch cables from Harting ensure external communication of the energy management system. Current sensors enable the monitoring of current quality on inverters, among other things. Printed circuit boards are used to control inverters and storage systems, which ensure communication with other components. For this connection of the internal brain of a battery storage system, for example, PCB connectors from the Har-Flexicon and Har-Flex series offer reliable options.(sh)

* Ingo Siebering is Industry Sergment Manager Energy in the Global Business Unit Electric at Harting

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