NB/T 10613-2021 English PDF (NBT10613-2021)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click NB/T 10613-2021
Historical versions: NB/T 10613-2021
Preview True-PDF (Reload/Scroll if blank)

NB/T 10613-2021: Technical specification of power quality measurement and evaluation for electric vehicle battery charging/swap station
NB/T 10613-2021
NB
ENERGY INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.020
CCS K 04
Technical specification of power quality measurement
and evaluation for electric vehicle battery
charging/swap station
ISSUED ON: APRIL 26, 2021
IMPLEMENTED ON: JULY 26, 2021
Issued by: National Energy Administration
Table of Contents
Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 Measurement items ... 8 
5 Measurement methods and requirements ... 8 
5.1 Selection of measurement points ... 8 
5.2 Measurement equipment requirements ... 9 
5.3 Measurement duration and measurement conditions ... 9 
5.4 Data record ... 10 
5.5 Measurement methods ... 10 
6 Measurement result evaluation ... 10 
6.1 Supply voltage deviation ... 10 
6.2 Harmonics ... 11 
6.3 Inter-harmonics ... 11 
6.4 Three-phase unbalance ... 11 
6.5 Voltage flicker ... 11 
6.6 Rapid voltage changes ... 11 
6.7 Power factor ... 11 
6.8 Comprehensive index evaluation ... 12 
Annex A (Informative) Schematic diagram of the connection of a typical electric
vehicle charging station or swap station to the power grid ... 13 
Annex B (Normative) Measurement method for rapid voltage change ... 15 
Annex C (Informative) A brief introduction to the influence of electric vehicle
charging on power quality of power supply points and the countermeasures
when it exceeds the standard ... 17 
Annex D (Informative) Example of power quality comprehensive index
evaluation ... 20 
Bibliography ... 27 
Technical specification of power quality measurement
and evaluation for electric vehicle battery
charging/swap station
1 Scope
This Standard specifies the power quality measurement items, measurement
methods, measurement results evaluation requirements for electric vehicle
battery charging/swap station.
This Standard is applicable to the power quality measurement and evaluation
for electric vehicle battery charging/swap station powered by dedicated power
grids of 10kV and above. Electric vehicle charging stations or swap stations that
are powered by other voltage levels or not powered by the public grid can be
implemented by using this Standard as the reference.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB/T 12325-2008, Power quality - Deviation of supply voltage
GB/T 12326-2008, Power quality - Voltage fluctuation and flicker
GB/T 14549-1993, Quality of electric energy supply. Harmonics in public
supply network
GB/T 15543-2008, Power quality - Three-phase voltage unbalance
GB/T 17626.30, Electromagnetic compatibility - Testing and measurement
techniques - Power quality measurement methods
GB/T 19862-2016, General requirements for monitoring equipment of power
quality
GB/T 24337-2009, Power quality - Inter-harmonics in public supply network
GB/T 29316-2012, Power quality requirements for electric vehicle
charging/battery swap infrastructure
GB/T 29317-2012, Terminology of electric vehicle charging/battery swap
infrastructure
GB 50966-2014, Code for design of electric vehicle charging station
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T
29317-2012 as well as the followings apply.
3.1 electric vehicle (EV) battery charging station
a place that provides charging services for electric vehicles and consists of
three or more electric vehicle charging equipment
[Source: GB/T 29781-2013, 3.4, modified]
3.2 EV battery swap station
a place that provides battery replacement services for electric vehicles and
charges power batteries
[Source: GB/T 29317-2012, 5.2, modified]
3.3 rapid voltage change; RVC
the phenomenon of rapid transition of the voltage rms value between two
voltage steady states
NOTE 1: The characteristic indexes that characterize the rapid voltage change event
include the start time, the end time (duration), the maximum voltage change ΔUmax, and
the steady-state voltage change ΔUss.
NOTE 2: The rapid voltage changes described in this document are limited to voltage
changes under steady state conditions and do not involve voltage changes under transient
conditions.
NOTE 3: The voltage steady-state is related to the rapid voltage change threshold.
3.4 voltage steady-state
100 consecutive half-cycle voltage rms; slide by half cycle time interval; the
average value after sliding does not exceed the threshold range of rapid voltage
changes based on the average value before sliding
power grid. The measurement duration shall not be less than 24h.
NOTE: The measurement duration can be adjusted according to the change cycle of the
actual load size of the charging station or swap station.
5.4 Data record
The measurement data and its recording interval are as follows:
a) Supply voltage deviation, harmonics, unbalance, power factor
measurement data recording time interval include 1min, 3min, 5min or
10min. It is advisable to use 1min;
b) The long-term voltage flicker value shall be continuously recorded and
stored a set of data every 2h;
c) For the captured rapid voltage change events, the characteristic values
are recorded, including the start time, duration, maximum voltage change
ΔUmax and steady-state voltage change ΔUss.
5.5 Measurement methods
5.5.1 The measurement methods of power supply voltage deviation, harmonics,
inter-harmonics, three-phase unbalance and voltage flicker shall comply with
the requirements of GB/T 12325-2008, GB/T 14549-1993, GB/T 24337-2009,
GB/T 15543-2008 and GB/T 12326-2008 respectively.
5.5.2 The rapid voltage change measurement method is carried out in
accordance with Annex B.
5.5.3 The power factor correlation measurement method is as follows:
a) For the voltage and current measurement methods in the power factor
measurement process, see the power supply voltage class A
measurement method in GB/T 17626.30;
b) Conduct simultaneous calculation of active power, reactive power and
power factor.
6 Measurement result evaluation
6.1 Supply voltage deviation
Give the maximum value of positive and negative voltage deviations. Evaluate
whether the measurement results of power supply voltage deviation meet the
limit requirements of GB/T 12325-2008.
6.2 Harmonics
Give the total harmonic voltage distortion rate, the 2~50th harmonic voltage
content rate, and the 95% probability maximum value of the 2~50th harmonic
current. Evaluate whether the harmonic voltage content rate and the
measurement results of the harmonic current injected into the power supply
point meet the limit requirements of GB/T 14549-1993.
6.3 Inter-harmonics
Give the 95% probability maximum value of the inter-harmonic voltage content
rate in the frequency range of 0Hz~800Hz. Evaluate whether it meets the limit
requirements of GB/T 24337-2009.
6.4 Three-phase unbalance
Give the three-phase voltage unbalance, 95% probability maximum value and
maximum value of negative sequence current. Evaluate whether the three-
phase voltage unbalance and the negative sequence current injected into the
power supply point meet the limit requirements of GB/T 15543-2008.
6.5 Voltage flicker
Give the maximum v...