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Optimal Utilization of the Charging Infrastructure

Software Insights

Advantages of the WAGO Application Load Management

Dynamic Load Management for EV Charging

The drive to reduce our carbon footprint has caused many consumers and fleet owners to purchase electric vehicles. To increase the utilization rate of these vehicles, more charging stations are being built at the workplace and in commonly visited locations. The need to balance facility loads from local electric utilities and other power sources is a key to making EV Charging reliable and profitable.

WAGO’s Dynamic Load Management provides intelligent control of your charging stations by avoiding the risk of grid overloads and expensive peaks. It also ensures grid stability, even if multiple charging stations are in use along with normal operating systems.

Maximizing Charging Infrastructure Utilization

Demand- and Supply-side Management:

WAGO’s Dynamic Load Management can help reduce costs for both demand- and supply-side energy management. They can either be implemented independently or in parallel with each other. Both approaches reduce the energy demand at the grid connection point, allowing for peak shaving.

Demand-Side Management: The goal is to decrease demand by reducing energy consumption to prevent usage spikes and using WAGO’s Dynamic Load Management system can dramatically limit the power allocated to EV charging based on the number of vehicles and the time of day.

Supply-Side Management: With WAGO’s Dynamic Load Management, configure the system to utilize local power sources (i.e. photovoltaic systems, battery storage, etc.) during peak hours to reduce high-demand electricity charges from the utility company

A Look at the Software

Intuitive meter configuration via drop-down menu

Clear display of the charging park and status messages of the charging points – also available as a list view

Settings for all relevant electrical parameters of the charging station in an input screen

Convenient selection from a drop-down menu of pre-integrated charging stations and wallboxes and connection parameters; the OCPP forwarding settings can be selected individually for each charging point.

Advantages of WAGO Dynamic Load Management

AC/DC charging parks

For small, medium or large charging parks
1 to 225 charging points per controller
Combination of fast loaders, charging stations and wallboxes
Power of integrated charging stations: 11 kW to 350 kW
Mixed parks: combining AC chargers and DC chargers

Individual control

Control per charging point, charging group or overall park
Merge charging points into charging groups
Individual adaptation to the electrical infrastructure, taking into account the connection power
Prioritization of different charging points and groups

Integration of inverters for PV and storage systems

Consideration of renewable energies and storage systems
Support for the Sunspec protocol
Increase performance availability through PV and storage integration
Excess PV charging and charging from 100% self-generated energy possible

Our Products in Use

Energy Measurement Technology

Energy monitoring forms the basis for increasing the efficiency of your energy distribution and processes. Our harmonized energy measurement products save you much effort and expense for energy data collection. Energy meters are suitable for billing-relevant measuring points.

Power Supplies

WAGO’s efficient power supplies always deliver a constant supply voltage – whether for simple applications or automation with greater power requirements. WAGO offers uninterruptible power supplies (UPS), buffer modules, redundancy modules and a wide range of electronic circuit breakers (ECBs) as a complete system for seamless upgrades.

Switches

WAGO’s range of switches ensures the scalability of your ETHERNET network infrastructure, while providing outstanding electrical and mechanical performance. These rugged switches are designed for industrial use and are fully compliant with IEEE 802.3, IEEE 802.3u and IEEE 802.3ab.

FAQ – Questions and Answers about E-Mobility
and Load Management for Charging Infrastructure

A load management system for charging infrastructure allows the expansion and integration of e-mobility into power grids. Load management for EV charging controls the power of multiple charging points in order to optimize utilization of the existing existing grid connection – without the need for a power rating increase or even a new transformer at the grid connection point. Therefore, where there are multiple charging points, a load management system is usually necessary for integration of the charging infrastructure, because buildings, parking lots and underground garages are generally not designed with large power reserves.

Static load management is the simplest kind of load management system, where a preset static energy value is available to all loads. Static load management does not take any other consumers or generators into account.

An example of static load management for charging infrastructure:

Three charging stations are available with a total capacity of 22 kilowatt hours. If only one electric vehicle is charging at the three charging stations, it can be charged at the full 22 kilowatt hours. If two vehicles are connected, these 22 kilowatt hours are distributed equally among the two charging points.

Dynamic load management differs from static load management in one fundamental respect: The available energy is no longer static, but variable. In dynamic load management for charging infrastructure, the capacity is measured and dynamically distributed among the charging stations. For example, if the sun shining on solar power installations that feed into the grid, the total available charging power at the charging stations is increased to optimize utilization of the available electricity.

From the energy industry’s point of view, load management is necessary in order to keep grids stable and ensure security of supply. In the area of e-mobility, this means supplying the growing charging infrastructure with the additional electricity it needs without overloading the grid interconnection points. This requires generation and consumption – as well as storage, if applicable – to be harmonized. But renewable energy from decentralized generators fluctuates. Therefore, it is important to use surplus energy in the grid through flexible loads. This is exactly where WAGO comes in. Load management regulates the flow of energy and controls all loads, energy storage systems and generators in the energy network.

In addition to the cost of energy consumed, industrial and commercial companies and large properties whose consumption exceeds 100 megawatt hours (MWh) must pay a so-called demand charge: the price that has to be paid if the set power limit is exceeded. For the demand charge, the maximum average power consumption is calculated at a quarter-hour intervals. Normally, the quarter hour with the highest mean value is applied to the whole year. For example, with a demand charge of 110 euros per kilowatt (kW), a load peak of 1,000 kW can lead to additional annual costs of 110,000 euros. With the integration of a charging infrastructure for e-mobility, an additional consumption factor is added. Therefore, intelligent load management for energy flows is extremely important, especially for preventing peak loads (so-called “peak shaving”) in order to avoid additional costs.

The Load Management application is compatible with all common wallboxes and charging stations from a wide range of manufacturers:

ABB
ABL
Alfen
Alphatec Schaltschranksysteme GmbH
Alpitronic
Autoaid
Berger
BMW
Cfos
Compleo Charging Solutions AG
Easee
Entraek
EVBox
go-e
Heidelberg
Hesotec
Juice
Keba
Mennekes
NetsDo
Schneider
Siemens
Smart Fox
Star Charge
Stark in Strom
Stöhr GmbH
Tesla
Vestel
Wallbe
Wallbox
Walther-Werke
Webasto
WHB Metalldesign & Charging GmbH

The WAGO Application Load Management solution is compatible with popular Modbus® -enabled power transmitters and smart meter gateways.

Compatible manufacturers:

Bauer
Eastron
Elgris
EMH
EMU
Hager
IAMMETER
Janitza
KDK
Kostal
NZR
Orno
PQ Plus
Schneider
Siemens
Socomec
TIP
TQ
WAGO
YTL
Ziehl

Energy management is a higher-level system in which all load currents of consumers and generators are continuously measured, monitored and optimized. Energy management systems are used in intelligent networks such as smart grids, microgrids and nanogrids to improve energy efficiency. This includes real estate, industrial companies and even utilities. A fundamental goal is to minimize the consumption of auxiliary materials, additives and raw materials. Load management for charging infrastructure ensures a sensible distribution of existing loads within the energy management. So load management is only part of an overall energy management package – albeit an important one.

INDUSTRY MANAGER - ENERGY