Renewable Power Plants and Substations WAGO 750 XTR RTU
In harsh environmental conditions, additional air conditioning systems and special protective circuits increase automation technology costs. This does not apply to the extremely robust WAGO 750 XTR RTU. The XTR Series RTU is now versatile and ready for renewable energy systems and local networks. The WAGO 750 XTR RTU combines the advantages of the successful WAGO I/O SYSTEM with key features for exceptional reliability in harsh environments: These are extreme resistance at temperatures of -40 ° C and +70 ° C, 1 kV (<60 V, Class VW1) and immunity to interference up to 5 kV (≥ 60 V, Class VW3) and resistance to vibration up to 5G. The system requires minimal space and is distinguished by low energy and maintenance costs. These benefits increase productivity with incredible system uptime.
The main product of the WAGO 750 XTR RTU series is the compact, high-performance PFC200. The 750 XTR RTU devices are available in three versions with a different number of communication interfaces: two ETHERNET connections and an RS-232 / RS-485 interface or two ETHERNET connections, RS-232 / RS-485, CAN, CANopen and PROFIBUS DP Slave Interfaces. This latest version also has a variant with integrated 3G modem. Each version of WAGO 750 XTR RTU is available in the 750 XTR Series as telecontroller supporting DNP3 in addition to IEC 60870-5-101, -103 and -104, IEC 61850, IEC 61400-25 telecontrol protocols. All telecontrol protocols are parameterized by configurators. PFC200 Telecontroller also commands IPsec and OpenVPN to comply with the highest security standards. The fan with SDHC memory and battery-free PFC200 is maintenance-free and extremely durable.
WAGO Equips Substations for “Smart Grid”
Smart local power grid stations can prevent the construction of more expensive power lines. In this sense, WAGO RTUs play a key role in new systems. Intelligent expansion of the electricity grid, integration of renewable energy sources and electromobility pose new challenges for energy suppliers and industry. And this expansion has huge implications for local (network) substations. Primary and secondary technologies, i.e. transformers and switchgear on one side and protective devices on the other, must be integrated.
WAGO RTUs, which can be freely programmed via CODESYS, collect all data from various systems of the substation with digital and analog signals and communication (e.g. via Modbus RTU). These RTUs then translate the data into the communication protocols required by the supplier (for example, IEC 60870-5-101 / -104 or IEC 61850). The data is then transmitted over the data line to the control center. In the opposite direction, the control center can access the equipment of the substation (for example, medium voltage breaker cabin, protective devices, measurement systems of different manufacturers) via WAGO RTUs. WAGO RTUs protect the data flow in two stages: first by encrypting the data using TLS1.2, then; controllers, through secure connections such as IPsec or OpenVPN, according to the BDEW white paper.
Rethinking Telecontrol Technology
Telecontrol Gateway-WTG from WAGO
With maximum scalability and cost effectiveness, WTG enables independent data transfer from all telecontrol stations to central data collection and control level, regardless of manufacturer. In addition to data transfer packaging, it also supports the coordination of analog, GSM or ISDN dial-up connections to and from the substations. No special parameterization software is required for operation. Using Web Based Management (WBM), operators can add participants and make system adjustments within the parameters of the license agreement. This simplifies the installation of telecontrol substations and reduces integration costs. Costs from external maintenance are unnecessarily eliminated. Improved data transparency allows operators to recognize errors in the field, and therefore these errors can often be mitigated. With its flexible and compact solution and detailed modular design, WTG meets high requirements for telecontrol technology in the energy, environmental and process industries. In addition, with WAGO’s fieldbus-independent I / O-System, more than 500 input / output modules are available to the user (from 16 channel digital modules to 3 phase energy analyzers) .IEC 60870-5-101 / -103 / – They are compatible with 104, IEC 61850/61400 and DNP3 protocols. PFC200 is designed to meet the highest security requirements available according to the BDEW White Paper and ISO 27002
Easily communicate with VHPready on Smart Grid
The open industrial standard makes it easy to connect power producers and consumers to virtual power plants. It is a solution to manage fluctuating electricity generation from virtual power plants, solar power plants and wind turbines: decentralized generators such as combined heat and power plants and controllable power consumers such as heat pumps are combined in a flexible, controllable network. Its smart interaction ensures that the load on the electrical network is lightened. However, it is difficult to combine different systems since all participants speak different languages and cannot communicate with each other easily. The answer is in WAGO RTUs: They meet the requirements of the VHPready (Virtual Heat and Power) industry standard, thus ensuring seamless connection of systems in the virtual power plant. The current version of the specification is VHPready 4.0. It combines control and communication within the virtual power plant and, as a virtual interpreter, enables control centers and systems to understand each other. VHPready standardizes the objects and variables of different communication protocols. As before, VHPready communicates via predefined profiles using clearly defined data point lists instead of a system-specific array of variables. In addition to communication, area-specific definitions, such as specifications of operating behavior and response times, are also defined. This provides the possibility to control systems with schedules and schedules.
OpenVPN and IPsec; Cyber Security
Data security plays a central role. VHPready version 4.0, telecontrol protocol according to IEC 60870-5-104 or another TCP / IP based, object oriented approach according to IEC 61850-7-420 is the communication base for WAGO telecontroller. To secure data transfer, controllers set up an OpenVPN-based virtual private network (VPN) with SSL / TLS connections (Secure Sockets Layer, Transport Layer Security). SNTP / NTP (Simple Time Protocol / Network Time Protocol) is used for time synchronization. The WAGO controller can set up a VPN tunnel directly via OpenVPN or IPsec to transmit and receive encrypted data from the control center. Thus, WAGO not only meets IT security requirements for network operators, but also strengthens the system according to the requirements of the BDEW technical document.