Dynamic Security Assessment
SIGUARD DSA Cockpit showing risk of instability for the past (left), present (middle) and future (right) power system states.
Power system stability plays an increasingly important role in system operation and planning today. The stability limits of these systems are often reached far earlier than their thermal or rated limits. In addition, the growing complexity of power systems increases the risk of blackouts. This means that network operation cannot rely on data acquisition and static n-1 analyses only.SIGUARD DSA is an online application to support the system operator in taking critical decisions. The extremely fast power system simulator running in the background can be executed on a computation cluster and, hence, is able to perform a comprehensive contingency study of the largest existing networks.By considering short term forecasts of loads, generation and switching actions, SIGUARD® DSA can even prepare for future situations, leaving more time for the operator to study the situation and the proposed remedial actions.The solution includes customization and integration of SIGUARD DSA into any IT environment. The adaptation and long-term maintenance of the power system model as well as consulting services are offered.
Contingency analysisThe contingency study cycles automatically, taking the most current snapshot from the SCADA system as the basis. The results from this study are analyzed and presented to the user. The procedure of intelligent results analysis is based on the experience of power system dynamics experts and is customized to suit the specific needs and technologies of different power systems.
SIGUARD® DSA considers all possible stability phenomena, such as:
Small signal stability
The high-speed simulation engine makes it possible to analyze the entire range of stability issues ahead of real time – with a single tool that uses a single system model. Cascading outages caused by system dynamics can be observed and analyzed with the embedded protection simulation in order to prevent blackouts of the power system.Consideration of protection devicesIn more than 50% of the past blackouts, the protection system was part of the event. Protective devices can lead to cascading outages of multiple network elements. Such events can only be observed in dynamic security assessment if the protection devices are modeled for simulation in time domain.VisualizationMulti-level results visualization with traffic-light representations of the stability levels is prepared in the background in order not to distract the control room personnel from their daily work. In case of critial situations the user can dive into a more informative results presentation. This representation shows the effects of system disturbances as well as the origin of the stability problems which then allow the operator to define possible solutions to a contingency.
Services provided by Siemens The SIGUARD® team offers a combination of software, training and consulting to our customers. The software forms the basis of SIGUARD®. We offer the following services:
On-site commissioning of individual or all SIGUARD® solution parts
Adaptation to the control room applications of any vendor
Adaptation of the power system models of any vendor to the SIGUARD® format
Adaptation to the power system specific requirements (e.g. grid code)
Training courses offered for SIGUARD® solution topics, such as:- Power systen dynamics- Voltage stability assessment- Transient stability assessment- Small signal stability assessment- Handling of the SIGUARD® software components
In addition, as consultants we provide ongoing support for system studies regarding special protection schemes, remedial actions, power system and protection planning.
Key features of SIGUARD® DSA:
Early recognition of stability problems
Identification of proper and verified measures to keep the system stable
Platform-independent, multiuser ability, web applicability
Fulfillment of control room requirements (security, redundancy)
Extremely fast and accurate even for the largest power systems
Find out more about SIGUARD® DSA features and watch our SIGUARD® DSA video interview.
Advantages of working with PSS®SINCAL:
Increased security and utilization of transmission system
Foresighted operation of power systems in congestive situations
Satisfying regional system stability requirements
Decision support for control room personnel
Prevention of blackouts and large disturbances
Collaboration across department borders (planning and operation)
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