Distributed energy system planning

Distributed energy systems (DES) and digitalization are driving the transformation of the energy world. Siemens PTI provides an integrated approach for the DES design to evaluate the technical feasibility while considering economic expectations.

• System definition: data acquisition and aggregation
• Generation analysis: simulation of generation mix
• Network analysis: modeling of electrical target network and in-depth network simulation
• Supply system analysis: iterative integration of generation and network analysis for optimized system design
• Detailed implementation roadmap

Island networks and autonomous microgrids combine essential capabilities for distributed energy sources, but pose special challenges in system operation. Siemens PTI helps clients to:

• Evaluate an independent energy supply against the connection to the main grid
• Define the specific optimum between technical and economic feasibility
• Substitute expensive generation units with efficient and sustainable energy sources
• Ensure reliable and stable system operation
• Consider voltage and frequency control aspects
  

With a decreasing levelized cost of energy (LCoE) in decentralized and smaller generation units, more and more energy is being produced locally. As a consequence, distributed energy systems or microgrids are being increasingly recognized as a complementary concept to industrial supply systems. There are often contradictory factors which influence planning and operation, such as economics, reliability, operability, system reserves, independency, and sustainability. To support you, Siemens PTI offers:

• Evaluation of network connection, dimensioning of captive generation and storage, and analysis of the industrial supply system to ensure network resilience and operability
• Help achieving optimal LCoE and network tariffs in order to reduce total energy costs
• Reduced emissions and improved carbon foot-print

Energy storage systems (ESS) can provide solutions to several challenges which arise from the increasing, often fluctuating infeed of distributed energy resources (DER) into the grid. Besides their positive impact on grid performance and reliability, they can also be applied to generate additional economic value. Siemens PTI supports clients in evaluating the technical and economic impact of storage solutions based on the individual regulative framework and grid conditions for all kinds of storage applications, e.g.:

• Peak shaving and tariff reduction for industrial loads
• Delivery of primary reserve for frequency control
• Increased utilization of decentralized volatile renewable energy sources
• Optimization of grid efficiency and stability
• Integration with microgrids and island operation of networks
• Engagement in energy trading

Measures taking into account the control of generation units, flexible loads and switching actions to guarantee high resilience and fast resupply.

Defined back-up concept to bring the system from emergency or blackout system state back to normal state immediately.

Study to ensure the capability of starting the grid without energy from external power sources and energizing the network parts connected to the generation unit.

Determining and dimensioning required momentary, short-term and long-term reserve power in order to maintain frequency stability and a stable power system.

Analysis of CHP integration to evaluate optimal dimensioning and secure network connection.

Detailed modeling and performance analysis of controllers, as well as measurement of controller response and performance on electrical machines.

Measurements and system simulation to understand outages in power system operation and define suitable mitigation measures.

Analysis of losses in power systems and recommendations to improve efficiency.

Identifying the impact of the interconnection of DER/RES plants on power grids to maintain the overall power system’s technical performance. 

Measurements, development of lightning protection and grounding concepts, performance validation of installed systems and related disturbance analyses.

Assessment of voltage drop, current, and acceleration time during start-up of induction machines as well as analysis of the impact on other units and devices.

Impact assessment of high-penetration converter-based infeeders and HVDC transmission systems, especially on frequency and voltage stability.

Measurement, evaluation and continuous monitoring of power quality related phenomena to avoid equipment failure.

Development of suitable schemes for power system protection and coordination of appropriate settings for protection relays.

Design and monitoring of a customized regulatory compliance program and assistance during audits to avoid monetary penalties and reputational impact.