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BSI PD IEC TR 62933-200:2021

BSI PD IEC TR 62933-200:2021

$198.66

Electrical energy storage (EES) systems – Unit parameters and testing methods. Case study of electrical energy storage (EES) systems located in EV charging station with PV

Published By Publication Date Number of Pages
BSI 2021 52
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This part of IEC 62933, which is a Technical Report, presents a case study of electrical energy storage (EES) systems located in electric vehicle (EV) charging stations with photovoltaic (PV) power generation (PV-EES-EV charging stations) with a voltage level of 20 kV and below. EES systems are highlighted in this document because they are a desired option to make the charging stations (especially the high-power fast charging stations) grid-friendly, improve the self-consumption of clean energy generation, and increase the revenue of stations. In this application, EES systems show excellent performance by running in a variety of available operating modes, such as peak shaving, power smoothing, load tracing, time-of-use (TOU) price arbitrage, and ancillary services. The general duty cycle is recommended based on the summary of the operation characteristics of the EES systems.

This document includes the following elements:

  • overview of general PV-EES-EV charging stations;

  • operational analysis of EES systems in typical project cases;

  • summary and recommendation of EES systems’ operation modes.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
7 FOREWORD
9 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
10 4 Overview of EES systems located in EV charging stations with PV power generation
4.1 General
4.2 Application scenarios
11 4.3 System communication architecture
12 4.4 Duty cycle analysis
Figures
Figure 1 – Example of communication system architectureof PV-EES-EV charging station
13 5 Project of commercial PV-EES-EV charging station based on common DC bus
5.1 Case project overview
Figure 2 – System structure for the case of a commercial PV-EES-EVcharging station based on common DC bus
14 5.2 System operation and control
5.2.1 Operation data analysis
Figure 3 – EV load and PV power for the case of a commercialcharging station based on common DC bus
Figure 4 – TOU and charging service prices for the case of a commercialcharging station based on common DC bus
15 5.2.2 Operation mode analysis
16 Figure 5 – Operating power in low- and medium-price periodsfor the case of a commercial charging station based on common DC bus
17 5.3 Summary
Figure 6 – Operating power in high-price periods for the case of a commercial charging station based on common DC bus
Figure 7 – EES system duty cycle for the case of a commercialcharging station based on common DC bus
18 Tables
Table 1 – Time division of EES system’s operation modes in the caseof a commercial charging station based on common DC bus
19 6 Project of commercial PV-EES-EV charging station based on common AC bus
6.1 Case project overview
Figure 8 – Daily electricity flow for the case of a commercialcharging station based on common DC bus
20 6.2 System operation and control
6.2.1 Operation data analysis
Figure 9 – System structure for the case of a commercial PV-EES-EVcharging station based on common AC bus
21 6.2.2 Operation mode analysis
Figure 10 – EV load and PV power for the case of a commercialcharging station based on common AC bus
Figure 11 – Operating power in power smoothing mode for the case of a commercial charging station based on common AC bus
22 Figure 12 – Operating power in peak shaving mode forthe case of a commercial charging station based on common AC bus
23 6.3 Summary
Figure 13 – Operating power in the TOU price arbitrage mode forthe case of a commercial charging station based on common AC bus
Table 2 – Time division of the EES system’s operation modes for the case of acommercial charging station based on common AC bus
24 Figure 14 – EES duty cycle for the case of a commercial chargingstation based on common AC bus
Figure 15 – Daily electricity flow for the case of a commercialcharging station based on common AC bus
25 7 Project of business PV-EES-EV charging station based on common DC bus
7.1 Case project overview
Figure 16 – System structure for the case of a business PV-EES-EVcharging station based on common DC bus
26 7.2 System operation and control
7.2.1 Operation data analysis
Figure 17 – PV power, EV load and output power for the caseof a business charging station based on common DC bus
Figure 18 – TOU and charging service prices for the caseof a business charging station based on common DC bus
27 7.2.2 Operation mode analysis
Figure 19 – Operating power in equivalent load tracing mode for thecase of a business charging station based on common DC bus
28 Figure 20 – Operating power in TOU price arbitrage mode for the case of a business charging station based on common DC bus
29 7.3 Summary
Figure 21 – Operating power in demand response mode for thecase of a business charging station based on common DC bus
Figure 22 – Operating power involved in TOU arbitrage and demand responsefor the case of a business charging station based on common DC bus
30 Figure 23 – EES duty cycle for the case of a business charging station based on common DC bus
Figure 24 – Daily electricity flow for the case of a business chargingstation based on common DC bus
31 8 Project of business PV-EES-EV charging station based on common AC bus
8.1 Case project overview
8.2 System operation and control
8.2.1 Operation data analysis
Figure 25 – System structure for the case of a business PV-EES-EVcharging station based on common AC bus
32 8.2.2 Operation mode analysis
Figure 26 – EV load and PV power for the case of a businesscharging station based on common AC bus
33 Figure 27 – Simulation results for operation strategy 1 for the case of a business charging station based on common AC bus
Figure 28 – Simulation results for operation strategy 2 for thecase of a business charging station based on common AC bus
35 8.3 Summary
Figure 29 – Simulation results for operation strategy 3 for thecase of a business charging station based on common AC bus
Figure 30 – Three operation strategies and resultant operation modes of the EES system for the case of a business charging station based on common AC bus
36 9 Recommendation for operation modes of EES systems located in EV charging station with PV panels
Table 3 – Time division of EES operation modesfor the case of a business charging station based on common AC bus
37 Table 4 – Recommended operation modes of the EES system in various installation scenarios of a PV-EES-EV charging station
38 Annex A (informative)Duty cycles of the EES systems located in EV charging station with PV
A.1 General
A.2 Project of commercial PV-EES-EV charging station based on common DC bus
Table A.1 – Charging-discharging power of EES system for the case of a commercial charging station based on common DC bus (per-unit value)
40 A.3 Project of commercial PV-EES-EV charging station based on common AC bus
Table A.2 – Charging-discharging power of EES system for the case of a commercialcharging station based on common AC bus (per-unit value)
47 A.4 Project of business PV-EES-EV charging station based on common DC bus
Table A.3 – Charging-discharging power of EES system for the case of a businesscharging station based on common DC (per-unit value)
49 Bibliography

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BSI PD IEC TR 62933-200:2021
$198.66