前言:这是CSA C22的第二版。3第9条，分布式能源和供电系统的互联。它取代了2008年出版的题为“分布式资源和电力供应系统的互联”的前一版本。它是CSA集团根据《加拿大电气规范》第三部分发布的一系列标准之一。电力供应市场正在发生的变化，包括放松管制和在发电领域引入新的市场参与者，导致需要标准化连接实践，以连接50 kV或以下运行的配电系统。2019年之前，与产品认证和项目影响评估相关的分布式能源（DER）互连要求被分配到三个CSA集团标准中: CSA C22。2个107.1号CAN/CSA-C22。2号257和CSA C22。3号9号。CSA集团重振了CSA C22。3第9条将DER互连的所有要求整合到一个标准中，供互连的公用事业和系统设计师以及DER认证的制造商参考。本标准解决了加拿大分销商的关键要求，可被视为加拿大互连DER的新标准。本标准旨在通过提供分布式发电系统和供电系统互连的技术要求来满足这一需求。本版本的重大变更包括:a）对第6条（配电系统特性）中有关异常电压和频率运行条件的修订。 b） 对第7条（互联系统的要求）的修订，考虑到i）确定DER等级，以及基于其能力的每个等级的具体要求；ii）公共耦合点处的无功功率控制要求；iii）DERs的有功功率控制功能要求；iv）DER的电压和频率干扰穿越要求；andv）DERs的有意孤岛保护要求。c） 根据CSA C22更新的逆变器生产和型式试验，对第8条（互连试验）进行了修订。2 107.1;ii）有意孤岛的测试要求；Andii）高级逆变器功能的临时测试。 此外，还更新了图表，以反映最低行业要求。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围1。本标准规定了公共耦合点（PCC）处50 kV以下的分布式能源（DER）和配电系统的互连技术要求。1.2本标准未定义与单个PCC互连或连接到给定馈线的装置的最大DER容量或电压上限。1.3本标准的目的是规定人员安全的最低要求； b） 服务的连续性；（c）保护财产。1.4本标准不适用于二次网络连接，也不涉及a）发电商的保护？s设施；b） DER装置的操作要求；c） 传输系统的影响和升级；d） 分销系统或订单系统的规划、设计或运营；e） 计量、费率、关税和其他与互联有关的合同或商业问题；orf）未最终连接到全省或区域电网（即远程位置）的分布式能源和配电系统的互连。注:远程电网的所有人可以选择部分或全部应用本标准，如果适用于远程电网。 1.5在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）来定义其应用。

Preface:This is the second edition of CSA C22.3 No. 9,Interconnection of distributed energy resources and electricity supply systems. It supersedes the previous edition published in 2008, under the titleInterconnection of distributed resources and electricity supply systems. It is one of a series of Standards issued by CSA Group under Part III of theCanadian Electrical Code.Ongoing changes to electricity supply markets, including deregulation and the introduction of new market participants in the area of electricity generation, have created a need for standardized connection practices for connections to distribution systems operating at 50 kV or below. Prior to 2019, distributed energy resource (DER) interconnection requirements related to product certification and project impact assessment were distributed amongst three CSA Group standards: CSA C22.2 No. 107.1, CAN/CSA-C22.2 No. 257, and CSA C22.3 No. 9. CSA Group has revitalized CSA C22.3 No. 9 to consolidate all the requirements for DER interconnection in a single standard that will be referred to by utilities and system designers for interconnection and manufacturers for DER certification. This standard addresses key requirements for Canadian distributors and can be considered the new standard for interconnecting DER in Canada.This Standard is intended to address this need by providing technical requirements for the interconnection of distributed energy generation systems and electricity supply systems.Significant changes in this edition include:a) Revisions to Clause 6 (distribution system characteristics) regarding abnormal voltage and frequency operating conditions.b) Revisions to Clause 7 (requirements for the interconnection system) regardingi) identifying DER grades with specific requirements for each grades based on their capabilities;ii) reactive power control requirements for DERs at the point of common coupling;iii) active power control function requirements for DERs;iv) voltage and frequency disturbance ride-through requirements for DERs; andv) Intentional islanding protection requirements for DERs.c) Revisions to Clause 8 (interconnection tests) regardingi) production and type testing for inverters updated from CSA C22.2 107.1;ii) test requirements for intentional islanding; andiii) provisional testing for advanced inverter functionality.In addition, figures and tables were updated to reflect minimum industry requirements.This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope1.1This Standard specifies the technical requirements for the interconnection of distributed energy resources (DER) and distribution systems up to 50 kV line to line at the point of common coupling (PCC).1.2This Standard does not define the maximum DER capacity or the upper voltage limit for installations that are interconnected with a single PCC or connected to a given feeder.1.3The objective of this Standard is to specify minimum requirements for thea) safety of persons;b) continuity of service; andc) protection of property.1.4This Standard does not apply to secondary network connections and does not addressa) protection of the power producer?s facility;b) operating requirements for DER units;c) transmission system impact and upgrades;d) planning, design, or operation of the distribution system or DER system;e) metering, rates, tariffs, and other contractual or commercial issues associated with interconnection; orf) interconnection of distributed energy resources and distribution systems that are not ultimately connected to a province-wide or regional electricity grid (i.e., remote locations).Note: The wires owner of a remote grid might choose to apply this Standard in part or whole, where appropriate for the remote grid.1.5In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application.