In pursuance of Subrule 1 of Rule 15 of the Bureau of Indian Standards Rules, 2018, the Bureau of Indian Standards

## Report on Amendments to Indian Standards related to High-Voltage Direct Current (HVDC) Systems and Static Synchronous Compensators (STATCOM) **1. Executive Summary:** This report analyzes a notification from the Bureau of Indian Standards (BIS) establishing amendments to four Indian Standards related to High-Voltage Direct Current (HVDC) systems and Static Synchronous Compensators (STATCOM). The amendments pertain to system tests, power losses in voltage-sourced converter (VSC) valves, and electrical testing of VSC valves. These amendments aim to update the existing standards with current revisions from the International Electrotechnical Commission (IEC). The key finding is that this notification affects manufacturers, testers, and users of HVDC and STATCOM equipment in India, ensuring alignment with international practices and technological advancements. **2. Introduction:** This report provides an overview of the notification published by the Bureau of Indian Standards (BIS) regarding amendments to existing Indian Standards related to HVDC systems and STATCOM. The analysis is based solely on the provided text of the notification. **3. Policy Overview:** This notification concerns **amendments** to the following existing Indian Standards: * IS 16076 : 2013 - Amendment No. 2 IEC 61975 : 2010 HighVoltage Direct Current HVDC Installations System Tests * IS 18322 Part 1 : 2023 - Amendment No. 1 IEC 627511 : 2014 AMD 1 : 2018 Power Losses in Voltage Sourced Converter VSC Valves for HighVoltage Direct Current HVDC Systems Part 1 General Requirements * IS 18322 Part 2 : 2023 - Amendment No. 1 IEC 627512 : 2014 AMD 1 : 2019 Power Losses in Voltage Sourced Converter VSC Valves for HighVoltage Direct Current HVDC Systems Part 2 Modular Multilevel Converters * IS 18324: 2023 - Amendment No. 1 IEC 62927 : 2017 Voltage Sourced Converter VSC Valves for Static Synchronous Compensator STATCOM Electrical Testing The core objective of these amendments, as inferred from the text, is to update and harmonize Indian Standards with the latest international standards developed by the International Electrotechnical Commission (IEC) in the specific areas of HVDC and STATCOM technologies. **4. Background and Rationale:** The rationale for these specific amendments is to incorporate the latest revisions and advancements in international standards (IEC) related to HVDC systems and STATCOM. The amendment likely aims to address gaps or inconsistencies between the existing Indian Standards and the current international best practices and technology, ensuring that Indian manufacturers and users of this technology are up-to-date and competitive. The amendments cover different aspects of HVDC and STATCOM technologies, suggesting a comprehensive effort to update the relevant standards. **5. Key Provisions / Changes:** This section focuses on the specific changes introduced by the amendments. Each standard has been amended through the incorporation of an IEC revision. These are the amendments: * IS 16076 : 2013 - Amendment No. 2 IEC 61975 : 2010 * IS 18322 Part 1 : 2023 - Amendment No. 1 IEC 627511 : 2014 AMD 1 : 2018 * IS 18322 Part 2 : 2023 - Amendment No. 1 IEC 627512 : 2014 AMD 1 : 2019 * IS 18324: 2023 - Amendment No. 1 IEC 62927 : 2017 **6. Target Audience and Stakeholders:** Based on the text, the target audience and stakeholders directly affected by these amendments include: * Manufacturers of HVDC systems and STATCOM equipment in India. * Test laboratories and certification bodies involved in testing and certifying HVDC and STATCOM equipment. * Utilities and power companies utilizing HVDC and STATCOM technology in their networks. * Engineers and technical personnel involved in the design, installation, and maintenance of HVDC and STATCOM systems. **7. Implementation Aspects (Inferred):** * **Responsible agency:** The Bureau of Indian Standards (BIS) is the responsible agency for establishing and notifying these amendments. * **Timelines:** The amendments are effective from May 2025 and will remain in force without amendment till November 18, 2025. This means the manufacturers and users of the equipment must implement the new standards by November 18, 2025. * The notification is issued in pursuance of Subrule 1 of Rule 15 of the Bureau of Indian Standards Rules, 2018, providing the legal basis for the implementation. **8. Expected Outcomes / Impact of Changes:** The likely intended outcomes of these amendments are: * **Improved Alignment with International Standards:** Ensure that Indian standards for HVDC and STATCOM equipment are aligned with the latest IEC standards. * **Enhanced Product Quality and Safety:** Adoption of the amended standards will likely improve the quality, safety, and reliability of HVDC and STATCOM equipment manufactured and used in India. * **Increased Competitiveness:** Indian manufacturers will be better equipped to compete in the global market by adhering to internationally recognized standards. * **Technological Advancement:** Facilitate the adoption of the latest technological advancements in HVDC and STATCOM systems within the Indian power sector. **9. Conclusion:** The BIS notification establishing amendments to Indian Standards related to HVDC systems and STATCOM is a significant step towards modernizing and harmonizing Indian standards with international best practices. These amendments will directly impact manufacturers, testers, and users of HVDC and STATCOM equipment, ensuring that Indian products and systems meet the latest international standards, promoting quality, safety, and competitiveness. This update is crucial for the continued development and advancement of the power sector in India.

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