Test Case 7

Evaluation of cost-effective operation of P2P-based local energy system

Identification

ID

7

Author

Julia Merino (TEC), Andres Cortes (TEC), Evangelos Rikos (CRES)

Version

1

Project

ERIGrid2.0

Date

19/04/2021

Test Case Definition

Name of the Test Case

Evaluation of cost-effective operation of P2P-based local energy system

Narrative

The main advantage of a peer to peer (P2P) based energy system roots on a collective minimization of the costs for energy while maximizing the individual benefits of the prosumers. This way, the benefits for the prosumers are attractive, thus favouring the deployment of distributed energy resources (DERs) and the willingness of the end-users to participate in the local energy market. The operators are responsible for providing the local market platform and take care of their possible congestions while the prosumers have the full control over their DERs. This means a different perspective over the energy management problem, traditionally centred at the distribution system operators who look for certain overall performance and benefits for the full population of DERs (e.g., by providing ancillary services upstream) instead of improving the individual benefits of the participants.

Function(s) under Investigation (FuI)
  • Bidding algorithms of the individual prosumers
  • Clearing function of the energy trading coordinator
Object under Investigation (OuI)
  • Modules for creating the bids at prosumer’s level
  • Module of the energy sharing coordinator for estimating the internal price
  • Communication modules between a set of converters/distributed energy resources and manageable loads
Domain under Investigation (DuI)
  • Electrical Power
  • ICT
  • Market
  • Heating/Cooling
Purpose of Investigation (PoI)
  • PoI1: Verification of the trading energy platform functioning to get a cost-effective operation for both the energy sharing coordinator and the prosumers (economic criteria)
  • PoI2: Validation that the control signals derived from the decision-making process are feasible to the controllable electrical devices (technical criteria)
System under Test (SuT)

Local energy community (LEC), distributed energy resources (DERs), controllers, ICT components (measuring/monitoring devices), benchmark distribution system (optional).

Functions under Test (FuT)
  • Capability of communication among different OuI.
  • Capability of the device response by real-time to follow different characteristics (output profiles)
Test criteria (TCR)
  • The communication module between different agents should guarantee a reliable operating channel to send the bids and internal/external prices.
  • Each manageable device should adequately adjust its power according to the received signals
Target Metrics (TM)
  • The execution time of the optimal power/price time-series sent to each device is adequate
  • Execution time of the P2P platform algorithm
  • Complying with the network constraints as well as the energy needs of the devices
Variability Attributes (VA)
  • Power set point at a required time (PoI1 & PoI2)
  • External price variability
  • Reliability of the forecasted time-series for demand and renewables
Quality Attributes (QA)
  • Loss of communication between agents (fail)
  • Significant deviation from the optimal operating point of the devices respect to the control signal (fail)
  • Technical operating levels of the grid, i.e., voltage, losses, and thermal capacity (fail)

Qualification Strategy

Two test specifications will be implemented: one for verifying the price algorithm of the trading coordinator along with its communication modules, and another for the verification of the control signals derived from the decision-making process to the controllable electrical devices. Note that the distribution network, mainly at the LV level, can be represented by a benchmark or real grid.


Test Specification TC7.TS01

Validation of the trading coordinator platform to get the internal prices based on the prosumer’’s received bids.

Test Specification TC7.TS02

Validation that the control signals derived from the decision-making process are feasible to the controllable electrical devices (technical criteria)