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Energy optimization in practice
Application examples
Find out more about the possible applications of KBR energy optimization by clicking on the question marks in the respective examples and exploring the solutions.
Reduction of the supply power
The highest 15-minute power consumption is calculated in the electricity bill. Just one (usually unintentional) power peak can significantly increase energy costs per year. Employees in a company are usually unaware of the consequences of their actions when many machines are simultaneously drawing their full power from the grid.
The KBR solution:
multimax D6
KBR energy optimization works in the background without affecting the production process. Thanks to the optimized trending process, the system detects a potential power peak at an early stage and regulates the power with the connected loads. multimax can be used regardless of industry and company size.
Time control of consumers
An electroplating company not only wants to reduce its peak output, but also preheat the electroplating baths automatically. Weekend days, public holidays and production-free periods must be taken into account here.
The KBR solution:
multimax D6 and multimax IGW
The electroplating baths are connected via the time programs of a multimax IGW. Accordingly, the required baths are heated up before work begins, depending on the production process. In the high heating phase, the baths are optimized so that no unnecessary power peaks occur. Even during working hours, multimax ensures that the set maximum value is not exceeded.
Minimize switching operations
The availability of the consumers that are included in the energy optimization should be as high as possible. Unnecessary switching operations must be avoided.
The KBR solution:
multimax D6 and multimax D4
Instead of a rigid “load on the grid” feedback signal, multimess D4 measuring modules are used to measure the current power and report it back to multimax. This means that the energy optimization works with the power actually consumed at the moment. This system can significantly reduce the number of switching operations.
Atypical grid usage (§ 19 NEV)
The customer would like to apply to the Federal Network Agency for atypical grid usage in order to significantly reduce costs in the "peak demand" area.
The KBR solution:
multimax D6
The target value in the high load window only has to be maintained for three months of the year. This is achieved with the help of multimax time programs, which are programmed to customer specifications. Once the high-load window for the following year has been announced, this can be defined in parallel for the active program. Activation takes place automatically at the turn of the year.
Example calculation for atypical grid usage per year:*
| Maximum output regular | 699 kW |
savings potential: 20945 € |
|
Performance price: |
84.66 €/kW | |
| Regular grid fee: | 699 kW x 84.66 €/kW = 59177 € |
The multimax time programs control the maximum output in high-load operation. The future grid fee will be significantly reduced:
| Maximum output in the high load window: | 451.6 kW |
KBR recommendation: Performance in the high-performance window with multimax D6 |
| Power price: | 84.66 €/kW | |
| Future grid fee: | 451.6 kW x 84.66 €/kW = 38232 € |
*Calculation based on values recorded in a medium-sized electroplating company. Status: 2020.
Individual grid fee (Section 19 NEV)
A mill operator would like to apply for the individual grid fee. To do so, he must purchase more than 10 GWh of energy per year and have at least 7,000 hours of use. However, this is not quite achieved.
The KBR solution:
multimax D6
The reference power is minimally reduced with the help of multimax. As a result, the number of hours of use can be increased to over 7,000 hours. With a view to the enormous savings of over 100,000 euros per year, the energy optimization system is set up redundantly. If one system were to fail, the redundant device takes over without delay.
Example calculation for individual grid fee per year: *
| Peak power: | 1495 kW | Potential savings: Grid fee to date: 1495 kW x 92.70 EUR/kW/a = 138,587 € |
| Consumption: | 0.4 GWh | |
| Hours of use: | 6957 h |
The multimax energy optimization reduces the power peak to 1450 kW. This results in the following hours of use:
| Maximum output in the high load window: | 451.6 kW |
New grid fee: Savings: |
| Power price: | 84.66 €/kW | |
| Future grid fee: | 451.6 kW x 84.66 €/kW = 38232 € |
*The prerequisites for individual grid charges in the above case study: the total active energy per year is at least 10 GWh and the hours of use are at least 7,000 hours.
**20% minimum share of grid usage fee
Would you like to see more practical examples and tasks? You can find more application examples here. You are also welcome to contact our product advisory service at any time.
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Energy optimization
Save energy costs in the long term by limiting the peak load.
