IEC 62909-2 pdf free download
IEC 62909-2 pdf free download.Bi-directional grid-connected power converters – Part 2: Interface of GCPC and distributed energy resources.
101.10 Self-start up
101.10.1 General
During grid-independent operation, the EV may power up and control the GCPC using a dedicated auxiliary power port to switch on the GCPC and closing the charge/discharge switch to provide energy from the EV. This is an IEC 61851-23:2014 optional feature.
NOTE Self-start up for system B, system C and multi-outlet is not defined in IEC 61851-23:2014.
101.10.2 EV section of system A
The vehicle may provide an optional function in which the auxiliary power to the station is supplied through the optional pin of the charging connector, or the cigarette lighter socket. In such cases, charging/discharging control of the station may be started (and operated) by the auxiliary power supplied from the vehicle, and the station shall draw the power through the terminals ASI or AS2 shown in Figure 107. Parameters and values for the interface circuit are shown in Table 102.
Additional requirements for actuating the unintended current flow prevention circuit are shown in Figure 107. If the optional function is used, the EV section shall monitor the status of the unintentional current flow prevention circuit during the EV discharging process. If the requirements are not satisfied, the station shall transfer to shutdown sequence.
102.4 Requirements of the control port
The control port shall include a fault status signal sent from the battery system to the GCPC.
When the battery system asserts the fault status signal, indicating that a fault condition or other hazardous condition has occurred, the GCPC shall take appropriate actions to ensure the safety of the overall system.
The action is prohibition of charging and/or discharging.
102.5 Functional safety requirements of the control port
Safety circuits responsible for the reliable transmission and reception of the fault status signal shall comply with suitable functional safety requirements, such as IEC 60730-1:2013 and IEC 60730-1:2013/AMD1:2015, Annex H, IEC 61508 (all parts), or national standards.
102.6 Installation
The manufacturer shall attach a caution label at the BS DC-port interface instructing the
installer to install the proper battery system.
103 Interface requirements for PV section
103.1 Protection against arc fault
In countries and regions that require the detection and interruption of DC arcs in photovoltaic systems, an arc fault detector (AFD) and an arc fault interrupter (AFI) shall be installed between photovoltaic energy sources and the DC/DC converters.
Arc fault detector performance requirements are defined in IEC 630271.
In the case where a GCPC has no integrated AFD, the combination of the DC/DC converter, the bi-directional inverter and the external AFD has to be tested as a system to prevent malfunction of the AFD by electromagnetic interference. An example of an external AFD is shown in Figure 110.
102.3 Voltage and current requirements
102.3.1 General
BS DC-port interface voltage and current shall comply with the DC-connection interface or
DC-port interface requirements.
The manufacturer shall provide the information for battery system selection according to
102.3.2 and 102.3.3.
102.3.2 Location for the information for selection
The manufacturer shall provide information in the locations specified below for the selection of the battery system:
a) on the product (see IEC 62909-1:2017, 8.4.3),
b) on the packaging,
c) in the installation manual,
d) in the user’s manual, or
e) in the maintenance manual.
In the case of d) and e), the installation, user’s and maintenance manuals may be combined as appropriate and, if acceptable to the customer, may be supplied in electronic format. When more than one of any product is supplied to a single customer, it is not necessary to supply a manual with each unit, if acceptable to the customer.IEC 62909-2 pdf download.
