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Use Case: KIT/CHP and BESS

Description Of The Use Case

Name of use case

*Use case identification*
ID	*System configuration(s)*	*Name of use case*
UC9	TBD	µCHP and BESS in production scenarios

Version management

*Version management*
*Version No.*	*Date*	*Author(s)*	*Changes*	*Approval status*
1.0	12/07/2017	T. Blank	First version	Draft

Scope and objectives of use case

*Scope and objectives of use case*
Scope	Industrial production processes rely on a predictive and stable energy supply. The future grid will have to handle a much higher content of renewable energy, thus, its stability will degrade. Setting up production processes on volatile local renewable energy supported by a grid with stability limitations is a challenge, especially for high power production processes, which deteriorate the stability of the grid even further. Lithium-ion battery storage systems can be used to mitigate the effects of high power transients in the production processes. The use case “Battery Electric Storage Systems (BESS) for electrical peak shaving in production scenarios“ considers processes to manufacture electronic and hybrid electronic systems. The processes are meant to be powered by electrical energy from solar panels (or generators operated with a solar profile) and from medium sized lithium-ion batteries up to a capacity of 70 kWh as well as a micro combined heat-power plant (µCHP) to support energy production during mid-European winter periods with a low generation of solar power and low temperatures. The stakeholders are the shop floor personal running the production as well as the management, setting the aims for the short and long term production. Multiple smart meters and sensors are monitoring the machinery, processes and the stored and generated energy as well as the grid power. The data is aggregated and centrally evaluated by a PC controlling the overall processes.
*Objective(s)*	O1: Understand the behavior of IPE’s production plant supported by a µCHP generator. O2: Optimize the generator and BESS characteristics for optimized production processes.
*Belongs to use case group (if applicable)*	Electrical Energy Storage

Narrative of use case

Narrative of use case

Short description

KIT-UC9 aims to optimize the energy supply of the production plant by adding a µCHP generator. Especially in middle regions of Europe, where during the winter months prolonged phases of low sun radiation, low wind and low temperatures can occur, the generated and stored power to keep the production running might not be sufficient. KIT-UC9 investigates the characteristics of the production plant if a µCHP is added as a continuous generator of electrical power and heat.

Complete description

Electrical systems with a large amount of renewable energy are subject to fluctuations in energy generation on multiple time scales. Production plants and processes, however, are significantly depending on a stable and predictable power supply. Especially, during prolonged phases of low radiation, low wind power and low temperature the integration of µCHP with a high conversion efficiency from gas to electrical energy might help to stabilize both, long term heat and power supply of the production site.

Long term periods characterized by a low regenerative power and heat generation will stop the plant operation. A BESS might be to big to compensate for the lack of energy generation by the renewable generators. Hence, a µCHP, preferably fuel cell technology, shall be added to the plant and its interaction with the production evaluated. Two scenarios will be investigated:

· Scen1: One shift production (from 08.00h – 16.00h)

· Scen2: Three shift production (00.00h-24.00h)

Optimality Criteria

*Optimality Criteria*
ID	*Name*	*Description*	*Reference to mentioned use case objectives*
OC1	Optimum µCHP	Optimize the plant power generation components and the BESS by adding a µCHP.	O1, O2

Use case conditions

Use case conditions

Assumptions

Data of the machinery, the processes, the battery and the generation are available in real time
Data base is running and accessible in real-time
Control devices are installed and accessible
Cloudy day , only local solar Power available
Battery at room temperature
Cold outdoor conditions ( -5 °C to +5 °C)

Prerequisites

General remarks

*General remarks*

Graphical RepresentationS Of Use Case

Graphical representation(s) of use case

Technical Details

Actors

*Actors*
*Grouping*		*Group description*
KIT-ACT-BESS		Groups all lithium-ion storage systems
KIT-ACT-Machinery		Groups all production machines
KIT-ACT-Operators		Groups the operators performing the production processes
*Actor name*	*Actor type*	*Actor description*	*Further information specific to this use case*
Li-Bess1 14 kWh	Energy storage	LiTec, 96S1P, 40Ah
Li-Bess2 19 kWh	Energy storage	Litarion, 120S1P, 45Ah
Li-Bess3 19 kWh	Energy storage	Litarion, 120S1P, 45Ah
Grid Supply	Energy generation	3x400V, 400 A
µCHP	Energy generation	tbd
Solar plant/Generator	Energy generation	tbd
AOI S2088-II	Machinery/Process	Automatic optical inspection
EVO 2200	Machinery/Process	Flip-chip die bonder
Paraquda 4	Machinery/Process	SMD pick and place machine
MP50_1_VK	Machinery/Process	Heated PCB lamination press
PEO 604	Machinery/Process	High temperature sinter oven
SMT XXS	Machinery/Process	Reflow soldering oven
Inverter/Charger	Energy Flow Control Device	tbd
SMD Operator	Human
Hybrid Operator	Human

Step By Step Analysis Of Use Case Optional

Overview of use case scenarios

*Scenario conditions*
*No.*	*Scenario name*	*Scenario description*	*Primary actor*	*Triggering event*	*Pre-condition*	*Post-condition*
Scen1	One-shift operation	One-shift operation from 08.00h-16.00h, low outside temperatures, cloudy winter day	Hybrid and SMD process operators	Start of production (SoP)	Battery fully charged	High power production step completely finished
Scen2	Three-shift operation	Three-shift operation from 00.00h-24.00h, low outside temperatures, cloudy winter day	Hybrid and SMD process operators	Start of production (SoP)	Battery fully charged	High power production step completely finished

Steps – Scenarios

*Scenario*
*Scenario name :*		Scen1 & Scen2
*Step No.*	*Event*	*Name of process/ activity*	*Description of process/ activity*	*Service*	*Information producer (actor)*	*Information receiver (actor)*	*Information exchanged (IDs)*	*Requirements R-ID*
1	SoP	Start of production	Process running		All actors	All actors
2	EoP	End of production	Process running		All actors	All actors