TSPI is a reliable product that utilizes the IEC 60870-5-104 standard protocol to provide efficient communication between solar power plants and DSOs or TSOs. It offers load control capabilities for power plants above 100 kW and voltage control features for power plants above 250 kW, which are required by DSOs. 

Power controller is compatible with most of inverter providers, any inverter manufacturer support may be added as customer request. SPC is also capable of reading multimeters from external devices or may have integrated multimeter solution. Controller software is constantly updated hence insuring our customers of any future changes. 

Controller functionality is always updated according customers needs. System topology is flexible and modular hence providing application with high scalability. Preconfigured remote cabinets with encrypted wireless communication can be installed, hence enabling control of the control devices distributed in wide area, like it usual for solar PV plants. 

Each cabinet is able to control up to 254 inverters and 4 optional hardware devices. 

Cabinets can be extended with 2 additional extension kits (remote SPC) with up to 254 inverters and 4 optional hardware devices. 

For large power plants multiple SPC configuration with Main Solar Plant Controller (MSPC) can be provided. SPC is usually installed near each inverter group with a medium voltage transformer, hence providing faster reaction time for balancing services and synthetic inertia solutions. MSPC coordinates multiple SPC as per TSO requirements. 

Multiple features like active and reactive power control, zero export, which typical requirements for DSO/TSO are implemented inside the controller, hence reducing time for commissioning. Simple interface for communication configuration with DSO/TSO allows commissioning without any knowledge of programming. All typical telecommunication standards supported including IEC 60850-5-104/101/103, DNP, IEC 61580. 

Controller tuning, if required, is inverter model based and automatic, hence providing the best power plant response for any configuration of solar PV plant. 

And all of this can be done from any computer with a web browser, no installation is required. 

Controller can be connected to cloud services, SCADA servers or via VPN connection depending on customer requirements. Cloud services may be on client premises or alternatively supervised on demand solution may be provided.  

SPC has preconfigured modbus, OPC UA servers and MQTT client for data transfer.  

Data is sent via TLS encrypted VPN connection or MQTT protocol hence providing IT security to all information inside. SPC has preconfigured firewall to disable any unrequired connections to the controller. Data transferred to remote cabinets via wireless communication is also encrypted.  

SPC is capable of recording and storing data inside the controller up to one week. This data may also be synchronized external data storage in the cloud or SCADA solution. Moreover, SPC can be extended with external to store data for longer periods of time. 

Multiple functionalities available like: 

  •  Balancing services to TSO (Transmission system operator) like FCR (Frequency containment reserve), aFRR (automatic frequency restoration reserve), mFRR (manual frequency restoration reserve) For ability to support of more devices and inverters please contact us. 
  • Voltage control services to DSO/TSO according to predefined or custom Q(U) (Reactive power according to voltage) curves. 
  • Reactive power compensation. Inverters can be used to compensate reactive power generated by motors or cabling, hence reducing total apparent power, leaving only active power flow through connection point with TSO/DSO. Control can be cooperated with condenser batteries. 
  • Synthetic inertia with bellow than 200 ms reaction time. 

Regardless of solar PV plant type or event when it comes to necessity to change type of the inverters, dynamic inverter models and automatic tuning ensures precise power plant control. Turnkey solution offers certainty to the investors, which they can benefit from. 

We can offer you such a solution: the SPC together with the cloud-based monitoring platform or/and SCADA Center solution. 

All cabinets are already assembled, tested and preconfigured according to DSO/TSO requirements. 

Project implementation steps:

The integration of TSPI into a solar power plant involves several key steps that ensure optimal performance and compliance with DSO regulations. The first step is ordering TSPI, which can be done through our website or by contacting our sales team directly.

Once TSPI is ordered, it is provided to the solar power plant and installed by our team of experts. This includes establishing communication between TSPI, the solar power plant’s inverters, and the DSO or TSO. This enables efficient and reliable communication between all parties, ensuring compliance with DSO regulations and optimal performance of the solar power plant.

After the installation is complete, power plant testing is conducted. The power plant testing process with TSPI typically requires sunny days to ensure optimal performance and accurate data collection. During the testing phase, we work closely with DSO engineers to check the parameters of the inverters and ensure compliance with DSO requirements. Using our TSPI product, we gather important information such as active power, reactive power, voltage, and more, and transmit it to the cloud for further analysis.

Once the analysis is complete, we generate a detailed report that includes key performance indicators and compliance information. This report is provided to the DSO or TSO, and the solar power plant is ready to begin producing electricity.

Lastly, we provide after-market support, which includes automatic communication monitoring between TSPI and the DSO or TSO, remote support, and remote incident resolution. This ensures that customers have ongoing support and maintenance for their TSPI integration and can continue to operate their solar power plant with confidence.