NEPLAN | Grid Compliance

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Grid code compliance is important for the smooth connection of any kind of power generation plant to the grid. Specifically, with increasing penetration of renewable generation, the verification of grid code compliance becomes crucial for the stable and safe operation of the network. Technical requirements that need to be addressed are:

  • Fault ride through (FRT) requirements
  • Reactive power control
  • Active power control
  • Grid management

Why NEPLAN?

NEPLAN offers a solution to plant owners who need to demonstrate compliance and transmission system operators who need to assess compliance, with the modules

  • Load Flow Calculation
  • Short Circuit and
  • Dynamic Simulator (RMS and EMT).

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NEPLAN | Optimization Infrastructure

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NEPLAN opens a new era in optimization, enabling the solution of previously intractable optimal control problems such as:

  • multi-period optimal power flow (MOPF)
  • unit commitment (UC-OPF)
  • security constrained optimal power flow (SC-OPF) and
  • planning and sizing problems over long time horizons

Why NEPLAN?

NEPLAN helps you find the optimal solution to power system operations and network planning, introducing a novel optimal control solver built for multicore architectures.

The new infrastructure promises extreme scalability and significantly lower memory footprint.

 

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NEPLAN | Voltage Quality

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Decreasing short circuit power, increase in consumers and generators with power electronics devices and decrease in network damping can lead to deterioration of the voltage quality in electrical networks.

NEPLAN offers up-to-date and user friendly calculation modules to ensure assessment based on technical rules and standards, with simple and quick actions.

Why NEPLAN?

NEPLAN helps distribution system utilities analyze and solve voltage quality problems with a variety of powerful modules:

  • Flicker Analysis module evaluates flicker limit curves and operating point of a device
  • Harmonics module is a powerful tool to address harmonic distortion problems
  • Load Flow Calculation applies to both symmetrical and unbalanced networks, letting the user investigate the effects of unbalanced load and generation
  • Dynamic Analysis module analyzes transient effects, such as those occurring during switching

 

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Flicker limit curves and operating point of a device

 

 

Transient overvoltage after a switching action, simulated with the Dynamic Simulation module

NEPLAN | Target Grid Planning

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A target network is intended to ensure long-term high efficiency in terms of network costs and reliability. Planning is based on power forecasts for existing consumers and producers. In addition, new potential consumers such as e-mobility and decentralized generation such as photovoltaic systems must also be considered.

NEPLAN addresses these challenges ensuring long-term network planning, optimization of network costs and reliability.

Why NEPLAN?

NEPLAN helps distribution grid utilities plan their network with its powerful algorithms:

  • Load Flow and Short Circuit modules for basic planning
  • Reliability and Hosting Capacity for specialized analysis

 

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Reliability for actual and planned target system

 

Hosting capacity of a medium voltage feeder

 

 

NEPLAN | Protection Device Management

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The challenges of utilities and industries intending to create a centralized protection database management system are among others:

  • Maintaining centralized relay setting workflows
  • Maintaining associated documents such as manuals and relay reports
  • Excluding unauthorized access to the relay settings, etc.

NEPLAN Protection Device Management System (PDMS) offers the solution to all of the problems that may arise from sustaining a centralized protection database.

Why NEPLAN?

NEPLAN PDMS can be used by any kind of utility or industrial customer to provide system security to the power system operations and management. It ensures correct functioning of protection devices with proper discrimination.

We achieve that by offering a multi-user database with user-access control for network model and protection devices providing direct interface to the simulation results.

 

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NEPLAN | Protection Assessment

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Reliable power system protection requires the co-ordination of protection devices for all types of fault and network loading and topology states. Operation of protection devices must ensure:

    • Reliability, selectivity, dependability and security
    • Elimination of nuisance relay tripping
    • Optimal relay setting
    • Incusion of different relay co-ordination philosophies.

NEPLAN Protection Assessment helps utilities make sure that all the above aspects are respected in order to automatically assess the protection of their power system.

Why NEPLAN?

NEPLAN Protection Assessment is addressed to large transmission and distribution utilities that need to have a reliable protection system ensuring proper selectivity and sensitivity for all relay settings.
It provides automatic assessment with clear indication of relays that are not selective and faults that are not cleared.

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NEPLAN | e-Mobility

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Increasing penetration of electric vehicles creates new challenges for distribution system operators. The power to charge the batteries should be delivered without violating any technical limits:

  • Charging power should be delivered in normal operation case and in extreme cases
  • Do electric vehicles cause regional bottlenecks?
  • Is grid reliability changing because of the new load situation?
  • e-Mobility penetration limit where problems start arising
  • How to avoid peak loads

NEPLAN helps distribution system operators, network planning and strategic network development service providers and universities answer these questions with its powerful calculation modules.

Why NEPLAN?

NEPLAN offers a solution to distribution system operators, network planning and strategic network development service providers and universities with the modules

  • Load Flow Calculation
  • Load Flow Time Simulation (time series) and
  • Hosting Capacity.

It provides a user-friendly platform to control the reactive power and loading times, use of decentralized energy storage and test network expansion scenarios.

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Renault Zoe ©  Manufacturer

Renault Zoe ©  Manufacturer

 

Analysis of module hosting capacity - Different penetration levels of charging stations in a distribution network

Analysis of module hosting capacity – Different penetration levels of charging stations in a distribution network

 

 

NEPLAN | Dispersed Generation

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Integrating dispersed generators, such as photovoltaic systems into existing electrical networks raises problems such as

  • voltage rise
  • harmonics and interharmonics generated by converters
  • voltage fluctuation and unbalance
  • increase of short circuit currents

NEPLAN helps distribution system utilities need to address these challenges with its powerful Connection Request module.

Why NEPLAN?

NEPLAN offers a solution to distribution system utilities with the module Connection Request. It provides quick and simplified assessment based on technical rules and standards.
Comprehensive results through the reliable and user-friendly graphical interface. For an in-depth analysis, NEPLAN offers a wide set of specialized modules.

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Apartment house with photovoltaic system

Apartment house with photovoltaic system

NEPLAN | Dispersed Generation

back to overview

Integrating dispersed generators, such as photovoltaic systems into existing electrical networks raises problems such as

  • voltage rise
  • harmonics and interharmonics generated by converters
  • voltage fluctuation and unbalance
  • increase of short circuit currents

NEPLAN helps distribution system utilities need to address these challenges with its powerful Connection Request module.

Why NEPLAN?

NEPLAN offers a solution to distribution system utilities with the module Connection Request. It provides quick and simplified assessment based on technical rules and standards.
Comprehensive results through the reliable and user-friendly graphical interface. For an in-depth analysis, NEPLAN offers a wide set of specialized modules.

Read more

 

 

 

Output of the harmonic analysis module, harmonics at a given node

Caracteristic cos(φ) = f(P), BDEW guideline

 

NEPLAN | NEPLAN Add-ons and Services

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Taking up of market requirements of international established customers and staying on top of changes in standards and market trends, NEPLAN suggest product development and project specific solutions. Our continuous cooperation with universities through research projects and with committees and associations (FNN, VDE, ENTSO-E, CIGRE, CIRED) allows us to fill in the market gaps as soon as they are created. To the new challenges we reply with specialized and customer specific NEPLAN add-ons and services.

NEPLAN provides modular add-ons with functions that can be adapted and enabled in a project specific way. Processes can be parameterised and can be implemented in an automated way. Also, an operator panel with user interface for administrators facilitates setting of parameters, assignment of functions and jobs to processes.

NEPLAN add-on for CGMES 2.4.15 (based on IEC TS 61970)

CGMES specifies the data exchange between DSOs and upstream TSOs. NEPLAN created this add-on to let the customer carry out automatic load flow time simulation over the parameterised time period (e.g. 3 days). It offers automatic conversion of forecast data to NEPLAN import format for time-dependent data (time series) and lets the data be cyclically imported into NEPLAN. After completing the calculation, the user can automatically export the data model with the results of the load flow time simulation according to CGMES format.

Calculatable data model is available in NEPLAN and can be used for these tasks, while the necessary import and export interfaces are available as a product solution. NEPLAN holds a gold certificate for CIM-based exports and the error potential is low due to product-based solution.

 

NEPLAN add-on Real Time Data

Realistic analyses based on real-time measured values and switching states is a must for modern power systems. Important parameters include analysis of what-if scenarios, consideration of reference days, predictive load flow calculation and load flow time simulation with measurements.

This add-on offers data integration with network control systems, interfaces for the import of measured values and switching states and easy integration into the network control center via Thin Client (web browser). IT security requirements are considered through encrypted data exchange between network control system and NEPLAN.

NEPLAN makes use  of synergies in network management and network planning through a common network data model while the load flow time simulation is more realistic, using real measured value time series instead of standardized load profiles. Additional analysis methods and decision-making aids for network management are also available.

 

NEPLAN add-on Load Modelling

The motive for the development of this add-on was the need for interfacing to GIS supplemented by interfaces to other systems such as SAP for load modeling as well as the modelling of load scenarios and operating states from operational data.

NEPLAN add-on Load Modelling offers generation of load scenarios leading to more realistic outcomes, processing of different sources and adjustment of the calculation through fine tuning of parameters. You get the advantage of flexible file formats and individually adaptable solution to existing data sources.

 

NEPLAN add-on Data Management

The demand for interfacing to GIS and for incremental data model preparation, together with the need for optimization of the data model, the creation of structural characteristics and the reduction of nodes led to the proposal of the NEPLAN add-on Data Management.

With this add-on, the user can generate a computable network data model with structural features and optimize network data models. Initial data import and incremental data synchronization is possible, as well as the optimization of larger networks for performance. Finally, it gives the possibility of incremental data model changes.