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NB/T 33007-2013: Communication protocol between monitoring system in electric vehicle charging station/battery swap station and charging/battery swap equipment
NB/T 33007-2013
ENERGY INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.200
K 81
Registration number: 43507-2014
Communication protocol between monitoring system
in electric vehicle charging station / battery swap
station and charging / battery swap equipment
ISSUED ON: NOVEMBER 28, 2013
IMPLEMENTED ON: APRIL 01, 2014
Issued by: State Energy Administration
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Communication protocol structure ... 6
5 Format of message frame in application layer ... 6
6 Specification of monitoring message ... 10
Appendix A (Normative) Information element ... 24
Communication protocol between monitoring system
in electric vehicle charging station / battery swap
station and charging / battery swap equipment
1 Scope
This standard specifies the interface and message specifications for the
communication between the monitoring system in electric vehicle charging
station / battery swap station and charging / battery swap equipment.
This standard applies to the monitoring systems of the electric vehicle charging
station and battery swap station.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 29317-2012 Terminology of electric vehicle charging/battery swap
infrastructure
GB/T 18657.4-2002 Telecontrol equipment and systems - Part 5:
Transmission protocols - Section 4: Definition and coding of application
information elements
DL/T 634.5104-2002 Telecontrol equipment and systems - Part 5-104:
Transmission protocols - Network access for IEC 60870-5-101 using
standard transmission profiles
RFC 791 Internet protocol
RFC 793 Transmission control protocol
RFC 894 Internet protocol on Ethernet
RFC 2200 Internet official protocol standard set
3 Terms and definitions
The terms and definitions as defined in GB/T 29317-2012 apply to this
document.
3.1
Frame
Protocol data unit of the data link layer.
3.2
Messages
The data unit exchanged and transmitted in the network, which contains the
complete data information to be sent.
3.3
Transmission control protocol
A connection-oriented, reliable, byte-based transmission-layer
communication protocol, abbreviated as TCP.
3.4
Internet protocol
A protocol designed to connect the computer network for communication,
abbreviated as lP.
3.5
APDU
Application protocol data unit, as detailed in clause 5.1.
3.6
APCI
Application protocol control information, as detailed in clause 5.2.
3.7
ASDU
Application service data unit, as detailed in clause 5.1.
3) Number of information-bodies: bit0 ~ bit6 indicate the number of power
metrics; bit7 = 1 indicates that the information-body's address is
continuous;
4) Information-body structure:
Information-body's address 00 00 00 (address of starting power metric)
Information-body
4-byte value of the first point of power
metric
Quality descriptor of the first
point of power metric
4-byte value of the second point of
power metric
Quality descriptor of the
second point of power metric
...
d) For the sub-box charger, the battery box's identification information shall
also be up-sent. See 6.3.1.3 for details.
6.2.3 Signal reset message
The monitoring system sends a signal reset command:
a) Frame type number: 04;
b) Reason for transmission: 03;
c) Number of information-bodies: 0.
6.2.4 Actively up-send message
When there is change data in the charging /battery swap equipment, the
change data shall be actively up-sent.
6.2.4.1 Actively up-send telecommand shift message
a) Frame type number: 21;
b) Reason for transmission: 01;
c) Number of information-bodies: bit7 = 0 indicates that the information-
body's address is included before each change point; bit0 ~ bit6 indicates
the number of changed telecommands;
d) Information-body structure:
Information-body's
address
Information-body
00 00 00 (the first
telecommand's
address)
The first changed telecommand
value (single point information
with quality descriptor)
The 7-byte time stamp for the first
changed telecommand (milliseconds high,
milliseconds low, minutes, hours, days,
months, years)
equipment, the battery swap equipment needs to make response for
confirmation/denial after receiving it;
2) For the charging start/stop telemetry command as issued by the
monitoring system to the charging equipment, the charging equipment
shall respond confirmation/denial after receiving it.
6.3 Characteristic messages
6.3.1 Characteristic messages of the charging equipment and the
monitoring system
6.3.1.1 Charging start/stop message
a) The monitoring system issues a single point tele-control message:
1) Frame type number: 41;
2) Reason for transmission: 03;
3) Number of information-bodies: 1;
4) Information-body structure:
Information-
body's address
00 00 00
Information-
body
Tele-control point No., which indicates the charging port (one-pile multi-charging type)
1-byte tele-control nature 01: Start charging; 00: stop charging
1-byte control information
Bit7 start
conditions
0, instant charging
1, timed charging
Bit6 control
methods
0, BMS-controlled charging
1, charger-controlled charging
bit0 ~ bit5 stop
conditions
1, power-volume-controlled
charging
2, time-controlled charging
3, money-amount-controlled
charging
4, charge to full
4-byte timing time
MM HH DD MM (this timing is meaningless for
instant charging)
4-byte maximum allowable
charging voltage
IEEE 754 short real number (R32.23)
4-byte maximum allowable
charging current
IEEE 754 short real number (R32.23)
4-byte control data
IEEE 754 short real number (R32.23), the detailed
information of control data is as described below
Reserved 1
Reserved 1
Reserved 2
Reserved 3
Reserved 4
Reserved 5
Handling information structure object of battery 1, the definition of which
is as detailed below
...
Handling information structure object of battery N, the definition of which
is as detailed below
Handling information
structure object of battery
16-byte battery unique number (all 0 if no battery)
1-byte battery type
Reserved 1
Reserved 2
Reserved 3
Reserved 4
Reserved 5
1-byte source type
0x00 - Not used
0x01 - Electric vehicle
0x02 - Battery rack
0x03 - Charging rack
...
2-byte source address
number
Address low-bit
Address high-bit
1-byte object type
0x00 - Not used
0x01 - Electric vehicle
0x02 - Battery rack
0x03 - Charging rack
...
2-byte target address
number
Address low-bit
Address high-bit
b) The battery swap equipment responds the confirmation/denial message.
See 6.2.5 for details.
6.3.2.2 Command message to remove the battery
a) The monitoring system sends a command:
1) Frame type number: 52;
2) Reason for transmission: 03;
3) Number of information-bodies: 1;
a) The monitoring system sends a command:
1) Frame type number: 56;
2) Reason for transmission: 03;
3) Number of information-bodies: 0.
b) The battery swap equipment responds the confirmation/denial message.
See 6.2.5 for details.
6.3.2.7 Command message to terminate
a) The monitoring system sends a command:
1) Frame type number: 57;
2) Reason for transmission: 03;
3) Number of information-bodies: 0.
b) The battery swap equipment responds the confirmation/denial message.
See 6.2.5 for details.
6.3.2.8 Command message to initialize
a) The monitoring system sends a command:
1) Frame type number: 58;
2) Reason for transmission: 03;
3) Number of information-bodies: 0.
b) The battery swap equipment responds the confirmation/denial message.
See 6.2.5 for details.
6.3.2.9 Command message for parameter setting
a) The monitoring system sends a command:
1) Frame type number: 59;
2) Reason for transmission: 03;
3) Number of information-bodies: 1;
4) Information-body structure:
Information-body's address 00 00 00
Appendix A
(Normative)
Information element
The following information elements are used in the application service data
units defined in this companion standard, which are constructed in accordance
with the definition of GB/T 18657.4-2002.
A.1 Single point information with quality descriptors (IEV 371-02-07) (SIQ)
SIQ : = CP8{SPI, RES, BL, SB, NT, IV}
SPI = Single point information: = BS1[1]< 0..1> (TYPE 6)
< 0> : = Open
< 1> : = Close
RES=RESERVE : = BS3[2...4] < 0> (TYPE 6)
BL : = BS1[5] < 0...1> (TYPE 6)
< 0> : = Unblocked
< 1> : = Blocked
SB : = BS1[6] < 0...1> (TYPE 6)
< 0> : = Unsubstituted
< 1> : = Substituted
NT : = BS1[7] < 0...1> (TYPE 6)
< 0> : = Current value
< 1> : = Non-current value
IV : = BS1[8] < 0...1> (TYPE 6)
< 0> : = Valid
< 1> : = Invalid
A.2 Quality descriptor (single octet) (QDS)
NT = current value / non-current value
If the most recent refresh succeeds, the value is called the current value. If the
refresh is unsuccessful within a specified time interval or its value is not
available, the value is called a non-current value.
IV = valid / invalid
If the value is validly collected, it is valid. If the acquisition function confirms the
abnormal state of the information source (loss or non-work refresh device), the
value is invalid. The value of the information object is not defined under these
conditions and is identified as invalid to remind the user that this value is
incorrect and cannot be used.
A quality descriptor is composed of five quality bits, which can be set
independently of each other. The quality descriptor provides the control station
with additional information on the quality of the information object.
The information object's quality descriptors are transparently passed through
the monitoring system (from data collection to the communication interface) and
must not be modified by the intermediate equipment.
Example 1: Since the field interface is in test mode, the circuit breaker status is
blocked, in which case the quality descriptor (BL = 1 "blocked") will be
transmitted unchanged from the field interface, through all layers of the system
to the control station.
Example 2: When the data acquisition is disturbed, the measured value will be
automatically or manually assigned a substitute value, the substituted
measured value is transmitted together with the quality bit SB=1 "substituted".
If the information object value is marked with a new quality descriptor for a
particular condition, the quality descriptor will be reset dynamically or
automatically when the condition changes.
A change in the quality descriptor each time will initiate a burst transmission of
the affected information object. When a time-stamped information object is
transmitted, its time stamp is the time at which the quality descriptor changes.
The station calling process calls all information objects, which are defined by a
particular call group and are independent of the content of the quality descriptor.
When the information object is called, the quality descriptor contains the most
recent state. This ensures that the integrity check can be implemented at the
control station.
A.3 Scaled value (SVA)