Here follow the changelog of ESS/EMS project:  

A working model of  EMS Online Simulator is available  24/7

 

v1.3.0 (2020-Apr-02): 

Features:

Add Soc Restore : aims of this feature is to recover the battery SOC to a given value.

These are the parameters' mask:

Soc Restore

 

Soc Restore1 : toggle "Soc Restore"

  • Pmax: amount of active Power reserved for the service
  • Dead Band: when SOC of all storage units is into the Dead Band, SOC recovery is not allowed
  • SOC Target: SOC to be reached (all storage units)
  • Upper Limit: when at least one storage Unit exceeds the Upper Limit (AND "Self Restore" feature is enabled), EMS will automatically activate the "Soc Restore"
  • Lower Limit: when at least one storage Unit exceeds the Lower Limit (AND "Self Restore" feature is enabled), EMS will automatically activate the "Soc Restore"

Soc Restore2: toggle "Self Restore" : if enabled, when least one storage Unit exceeds the Upper/Lower Limit, EMS will automatically activate the "Soc Restore"

SOC Restoring feature can operate in following ways:

case 1 : target is above all Storage Units SOCs'

case2

 

 case 2 : target is below all Storage Units SOCs'

case3

 

case 3 : target is an intermediate of Storage Units SOCs'

case1
 


 v1.2.4 (2020-Mar-30): minor bug fixes and improvement. Update EMS runtime softplc to Codesys v.3.5.15.40.


v1.2.3 (2020-Feb-04): minor bug fixes and improvement. Update EMS runtime softplc to Codesys v.3.5.15.30


v1.2.2 (2020-Jan-09): minor bug fixes and improvement.


v1.2.1 (2019-Dec-27): minor bug fixes and improvement.


v1.2 (2019-Dec-21)

Features:

  • add 2nd storage unit (1 PCS + 1 BMS additional controllers). This is the new CONTROL ARCHITECTURE

Architecture v1.2

 

  • EMS controller: add PDA algorithm (active-Power Distributing Algorithm).

Power Distrib

       Max dSOC: max admitted Delta SOC

This algorithm, depending on SOC, available capability and total required actvive Power, max required Delta SOC between units is able to smart redistribute the setpoint between 2 (or more) units in order to reduce the gap (in term of SOC) between them

PDA1

 


v.1.1 (2019-Dec-09)

Features:

  • PCS Controller: add efficiency interpolation (Catmull-Rom splines) according to following P[%] / ╖[%] Diagram

 PCS P Efficiency

 

  • EMS Controller:
    • add FPR (Frequency Primary Regulation) control. Details of this instance according to article
    • autostart BMS , PCS and FRP at controller startup


v.1.0 - (2019-Dec-01)

  • EMS Controller :  intial release
  • BMS Controller :  intial release
  • PCS Controller :  intial release