GE URSHA Network Security Features

Description

The Universal Relay family of protection and control products are built on a common modular platform. All UR products feature high performance protection, expandable I/O, integrated monitoring and metering, high-speed communications, and extensive programming and configuration capabilities. The UR is the basis of simplified power management for the protection of critical assets.

Key Benefits

• Modular construction via common hardware, reduced spare parts, and plug & play modules for cost savings and simplification
• CyberSentry UR provides robust network security aligned to industry standards and services
• Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization
• Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and comprehensive process bus support (IEC 61850-9-2LE, IEC 61869 or IEC 61850-9-2 Hardfiber) ensures interoperability, device managing optimization and reduced cost of ownership
• Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
• An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors
• Three Ethernet ports enable purpose specific LAN support, reducing latency from heavy traffic on critical communications
• Phasor Measurement Unit (synchrophasor) according to IEEE C37.118 (2014) and IEC 61850-90-5, directly streamed from your protective device

DCS system fault prevention and maintenance measures
Through the numerous fault examples mentioned above, it is not difficult to see that in order to reduce the probability of DCS system failures, it is necessary to do a comprehensive job in the selection and design, operation, and maintenance of decentralized control systems.
Selection, design and debugging of DCS.

Whether it is a newly built unit or an upgraded DCS, the configuration of the system and controller should focus on reliability and load rate (including redundancy) indicators. The design of communication bus load rate must be controlled within a reasonable range, and the load rate of the controller should be as balanced as possible to avoid the occurrence of “high load” problems that affect the safe operation of the system due to the lack of funds due to large-scale involvement.

The allocation of system control logic should not be overly concentrated on a certain controller, and the main controller should adopt redundant configuration.
The power supply design must be reasonable and reliable. One is to emphasize the load rate of power supply design; The second is to emphasize the redundant configuration of power supplies, while ensuring the independence of the two power supplies.
4. Pay attention to the reliability measures of DCS system interfaces. Emphasize the redundancy of important interfaces and the selection of interface methods, mainly focusing on reliability and real-time performance.
5. The grounding of the DCS system must be carried out in accordance with the manufacturer’s requirements to avoid grounding issues that may cause large-scale system failures. Attention should be paid to considering the anti-interference measures, self diagnosis, and self recovery capabilities of the system, and I/O channels should emphasize isolation measures. The quality and shielding of cables must also be highly valued, and computer specific shielded cables should be used for important signals and controls.
6. Full consideration should be given to the controllability of the main and auxiliary equipment, and operator stations and backup manual operation devices should be configured according to the operating characteristics of the equipment and the requirements for handling emergency faults of the unit under various working conditions. The emergency shutdown button configuration should adopt a separate operating circuit from DCS. At the same time, we cannot blindly pursue the “simplicity” of the human-machine interface, and the system configuration should also prioritize meeting safety production requirements. Special emergency intervention operations related to safety cannot be fully based on the integrity of the DCS.

When designing and configuring peripheral equipment such as actuators and valves that involve unit safety, it is necessary to ensure that these critical equipment can move towards safety or remain in place in the event of power loss, gas loss, signal loss, or DCS system failure.
For the protection system, the multiple signal acquisition method should be adopted and the blocking conditions should be reasonably used to make the signal circuit have logical judgment ability.
During the debugging period, all logic, circuits, and operating conditions shall be tested according to the debugging outline and specific methods.
DCS operation, start stop maintenance
Prepare for maintenance