Microgrid control systems
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General information
| Name of company | Siemens |
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| Website of company | www.siemens.com/microgrids |
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| Name of product | Microgrid Control - a SICAM application |
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| Product is hardware and/or software-platform | hardware & software platform |
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| Product standardized or project-specific? | both |
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| Distribution in which countries? | worldwide |
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| Unique selling proposition of the product | Robust open system |
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| Comments | |
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Services of the company
| Company produces microgrid control hardware | yes |
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| Company programs microgrid control software | yes |
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| Company provides system integration of microgrid control hardware and software | yes |
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| Company provides EPC services for microgrid projects | yes |
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| Company provides operations and maintenance of microgrids | no |
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| Comments | Only O&M for automation solution |
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Scope of control system
| Central monitoring and control unit (Hardware) | yes |
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| Control unit is standalone product or integrated into other device (if latter, which device?) | Standalone |
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| Other hardware components (e.g. smart meters, sensors, switches, domestic appliances, …) | can be connected with standardised communication protocols |
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| Software-Platform for monitoring and control of the microgrid | yes |
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| Software-Platform is a cloud solution or installed on own server or computer? | installed on own server or computer |
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| Software compatible with third party hardware? | no |
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| Hardware compatible with third party software? | no |
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| Monitoring and/or control of microgrid via smartphone app? | yes |
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| Comments | |
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Microgrid layout
| Which customers is the product aimed at? (e.g. residential, commercial, industrial, community, campus, military, …) | commercial, industrial, community, campus, military, remote locations |
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| Focus on offgrid, grid-connected or mobile microgrids? | All |
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| How many kilowatts of installed generating power can be integrated? (FROM - TO) | up to 100 MW |
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| How many different generators can be integrated? | 8 different types |
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| AC bus system | yes |
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| DC bus system | opt. |
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| Hybrid AC and DC bus system | opt. |
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| Which control strategy is used to run the microgrid? (e.g. central control, master/slave control, distributed control, …) | central control |
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| Which components are needed for grid forming in islanding operation? (e.g. battery, diesel generator, …) | Any grid forming equipment |
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| Can the system be retrofitted to existing energy system assets? | yes |
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| Can the system be expanded modularly after initial commissioning? | yes |
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| Comments | Open system, DC bus logic may be added on project specific bases |
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Connectivity
| Supported communication protocols (e.g. Modbus TCP, Sunspec, KNX, Zigbee, …) | Modbus TCP , IEC104, DNP and other protocol in energy field |
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| Supported communication interfaces (e.g. RS485, Ethernet, Wireless LAN, analog inputs an outputs, …) | RS485 Ethernet, analog inputs/outputs discreet signals |
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| Connectable generators (e.g. solar PV, wind turbines, CHP, diesel generators, fuel cells, hydro power plants, …) | PV, wind, diesel, gas, biogas, fuel cells, CHP, CCHP, hydro power plants |
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| Connectable storage systems (e.g. batteries [lead, lithium, redox flow, …], flywheels, heat storage, …) | lead/lithium, redox flow BESS, Flywheels , heat storage |
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| Connectable loads (e.g. heat pumps, heating boilers, charging stations for e-mobility, refrigerators, …) | All loads that we can communicate with a standardized protocol |
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| What components/brands can be integrated 'plug & play'? | All components supporting standardized protocols |
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| What components/brands have to be integrated manually? | Components with analog/ digital I/O and proprietary protocols |
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| How are components integrated manually? (e.g. connection boxes, command-line interface, ...) | Connection box or protocol adapter |
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| Software-Platform has graphical user interface for integration and configuration of external devices? | yes |
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| Software-Platform has graphical user interface for programming energy management options? | yes |
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| Communication between control system and energy system assets is wired or wireless? | both |
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| SCADA integration possible? | yes |
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| Other options to connect the microgrid to a higher-level distribution grid (e.g. smart meter gateway, CLS-interface, ...) | yes |
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| Can smart home systems be integrated into the microgrid? | opt. |
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| Is the data encrypted during data transfer? If so, how? | VPN/ certificates |
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| How is the system protected against threats from outside? | On request yes |
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| How are firmware updates realized? | Embedded SW needs very limited maintenance. Updates for SCADA using windows OS done by customer or service contract |
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| Comments | BDEW, NERC/CIP conform |
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Functions
| Grid conntected operation | yes |
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| Islanding operation | yes |
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| Automated transition from islanding to grid-connected mode and back | yes |
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| Time required for transition from grid-connected to islanded mode (in seconds) | max. 180 |
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| Uninterruptible Power Supply (UPS) | opt. |
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| Operation is also possible without connection to the internet | in grid connected and islanding mode |
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| Operation is also possible without connection to control room of higher-level distribution system operator (DSO) | in grid connected and islanding mode |
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| Asset control of distributed energy resources | yes |
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| Load management defining curtailable loads and priority loads | yes |
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| Automated dispatch control and optimization | yes |
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| Automated Re-dispatching in response to external orders or unplaned internal events | yes |
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| Internal voltage and frequency regulation in islanding mode | yes |
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| Real time active and reactive power control | yes |
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| Control of power exchange and voltage levels at point of interconnection | yes |
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| Aggregated ramp rate control at point of interconnection | yes |
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| Phase balancing between different AC phases | opt. |
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| Black start capability | yes |
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| Comments | |
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Energy management options
| Increase in self consumption | yes |
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| Increase of self-sufficiency | yes |
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| Peak Shaving | yes |
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| Charging of electric vehicles | yes |
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| Energy management of thermal energy assets? (e.g. heat pumps, thermal storage, ...) | yes |
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| Backup power | yes |
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| Zero feed-in | yes |
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| Ancillary services for public grid (e.g. frequency regulation, reactive power control, …) | Frequency regulation, active/ reactive power control, demand response |
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| Consideration of weather forecasts | yes |
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| Consideration of energy load predictions | yes |
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| Consideration of changing energy prices on the energy market | yes |
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| Use of AI or self-lernings algorithms | no |
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| Blockchain based billing and/or pay as you go solution | no |
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| Participation in the energy market | yes |
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| Comments | |
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Price indication
| Hardware: One-time acquisition costs for central control unit (without VAT) FROM - TO (approx. retail price in Euro) | 2000 - 4000 |
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| Hardware: Monthly maintenance costs for central control unit (without VAT) FROM - TO (approx. retail price in Euro) | 0 - 200 |
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| Hardware: Costs for other necessary system components? (e.g. smart meters, switches, …) | Project dependent; typically 1000 - 3000 |
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| Software: One-time acquisition costs (without VAT) FROM - TO (approx. retail price in Euro) | power&function based license scheme; 500 - 25000 |
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| Software: Monthly maintenance costs (without VAT) FROM - TO (approx. retail price in Euro) | 0 - 300 |
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| Are there renting or leasing options? If so, what are those options? | no |
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| Comments | Maintenance free hardware with 25 years lifetime / Scada with MS OS updates |
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| Price information available | yes |
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Best practice project
| Information on reference projects available | yes |
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| Best practice project - ongrid | IREN2: Operate an existing grid as a microgrid with a high share of renewable energy sources in the form of a self-sufficient island grid, Use as topological power plant, Ensure stable and economical grid operation based on renewable energy sources
Features: Intelligent monitoring and control of the microgrid, Voltage and frequency stability as well as provision of short-circuit power within the microgrid, Grid stabilization during black start, synchronization of the microgrid with the main grid, Island operation, Energy management and reliable provision of system services for the superimposed distribution network (Ancillary services)
Customer environment: PV inverters, Windpark, Battery storage, various types of gensets
https://new.siemens.com/global/en/company/topic-areas/iren-2.html |
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| Best practice project - offgrid | IREN2: Operate an existing grid as a microgrid with a high share of renewable energy sources in the form of a self-sufficient island grid, Use as topological power plant, Ensure stable and economical grid operation based on renewable energy sources
Features: Intelligent monitoring and control of the microgrid, Voltage and frequency stability as well as provision of short-circuit power within the microgrid, Grid stabilization during black start, synchronization of the microgrid with the main grid, Island operation, Energy management and reliable provision of system services for the superimposed distribution network
Customer environment: PV inverters, Windpark, Battery storage, various types of gensets
https://new.siemens.com/global/en/company/topic-areas/iren-2.html |
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Data update
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