PD IEC/TR 62511 is an international standard that covers general specifications of interconnected power systems.
PD IEC/TR 62511 provides guidelines for planning and design of the interconnected power system (IPS) and consequently achieve the delivery of reliable supply service.
PD IEC/TR 62511 specifies the guidelines for the design of interconnected power systems which will enhance system reliability, mitigate many of the adverse impacts associated with the loss of a major portion of the system or unintentional separation of a major portion of the system, and will not be consequential because of normal design contingencies.
Note 1: The application of PD IEC/TR 62511 is for high voltage transmission systems (generally over 50 kV). However, mitigation measures for certain system conditions, such as under-frequency load shedding (UFLSh), are frequently required for low voltage distribution systems. Thus, for the purpose of this transmission guide, interconnected control areas and/or system operators can establish the voltage level, as required.
Note 2: The design guidelines in PD IEC/TR 62511 are intended only for those elements of the IPS (not the entire high voltage transmission system) that can adversely impact other connected systems (s) due to faults and disturbances within an area or a predefined subset of a large area. Note 3: PD IEC/TR 62511 also provides guidance to determine the elements of the IPS.
PD IEC/TR 62511 on Interconnected power systems is useful for:
The interconnected power system means an entity’s (control area or a system operator) high-voltage transmission system that can adversely impact other connected systems due to faults and disturbances within its area. In the case of large areas, the system operator may define a subset of its area to keep the adverse impact contained within a smaller portion of its system.
PD IEC/TR 62511 specifies the recommended techniques for securing an IPS to ensure a high level of reliability. Generally, interconnected power systems are synchronously connected or asynchronously connected through DC interconnections. It aims to ensure the users that the interconnections are designed and operated consistently on both ends.
PD IEC/TR 62511 provides you with recommendations that include design and operation requirements to help you withstand the primary contingencies specified in it. The users could use its recommendations to ensure that its portion of the high voltage IPS is designed and operated in unison with these guidelines.
PD IEC/TR 62511 highlights the precautions that should be considered, in order to prevent the additional system interconnections, to cause significant adverse impacts on the reliability of the connected entities. It also encourages the users to make use of committees, task forces, working groups, interregional studies, and other methods in order to ensure their IPS is constantly updated/enhanced and maintained, in such a way that it is in agreement with these guidelines.
IEC TR 62511:2014