Hybrid Simulation of Power Distribution and Communication Networks
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Solution Overview
Problem
Current simulation methods for electric power distribution networks and communication networks are inadequate in handling the complex interactions and dynamics between power systems and communication networks, particularly in managing decentralized and volatile energy production, leading to challenges in system stability and real-time management.
Innovation Solution
A hybrid simulation method that integrates time-discrete numerical calculations of algebro-differential equations for power distribution networks with event-triggered protocol-based message transmissions in communication networks, using a central controlling instance for time-synchronous data delivery and processing units to determine time delays in measure execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated simulators are used for power systems and communication networks separately, then simulation simplicity is maintained, but the ability to analyze mutual impacts and complex interactions between both domains is lost
Solution Approach 1:
The patent combines separate power system simulator and communication network simulator into an integrated simulation platform that can analyze both domains simultaneously, enabling the analysis of mutual impacts while maintaining modular architecture for manageable complexity
2Measurement precision
If discrete event-based simulation is used for communication networks, then transmission dynamics are captured accurately, but synchronization with discrete time-step-based power system simulation becomes challenging
Solution Approach 1:
The patent introduces a time synchronization mechanism that acts as an intermediary between the discrete event-based communication simulation and discrete time-step-based power system simulation, using timestamping and event queue management to reconcile different time models without sacrificing measurement precision
3Adaptability or versatility
If comprehensive simulation integrating both power system and communication network models is implemented, then mutual impacts can be analyzed, but implementation complexity and computational requirements increase significantly
Solution Approach 1:
The patent segments the comprehensive simulation into modular components: power system model, communication network model, time synchronization module, and result analysis module, allowing flexible configuration and reducing implementation complexity while maintaining simulation versatility
4Loss of time
If real-time processing is implemented for decision making algorithms, then system response time is reduced, but computational load and processing requirements increase
Solution Approach 1:
The patent implements preliminary action by pre-calculating and storing simulation results for various scenarios, and by using efficient numerical methods that converge quickly, reducing the computational power needed during real-time decision making while maintaining fast response times
Data Source
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AI summary
With the rise of smart grid technologies, the interdependencies of ICT and power systems become increasingly important in both transmission and distribution networks. For the design of time-critical applications, simulation tools for an integrated analysis of these domains are needed. In the case of electrical transmission systems, high-performance ICT solutions and fast controllable power equipment enable a new era of dynamic power system operation whereas applications for this purpose need to be investigated with a special focus on their real-time performance. This invention presents a novel, modular co-simulation environment for comprehensive analysis of mutual effects, taking into account communication networks, IT processing and power system response. The invention relates to a computer implemented method for hybrid simulation of an electric power distribution network (1) and an associated communication network (2, 5a, 5b, 5c) connected therewith for determination of a time delay between an event occurring in the power distribution network (1) and a desired effect of a performed measure in the power distribution network (1), the measure having been decided on by means of a decision making algorithm as a reaction to the event. This hybrid simulation environment has been developed with a focus on the evaluation of the real-time performance of wide-area monitoring, protection and control (WAMPAC) applications, nonetheless, it is applicable to a variety of smart grid applications in transmission and distribution networks. A highly flexible simulation environment is provided to enable development of applications close to industrial implementation.