{"id":1702,"date":"2019-02-20T00:00:00","date_gmt":"2019-02-20T00:00:00","guid":{"rendered":"https:\/\/www.trccompanies.com\/insights\/nerc-to-modify-standard-and-develop-compliance-guidance-to-accommodate-inverter-based-generation-technologies\/"},"modified":"2025-02-13T14:35:45","modified_gmt":"2025-02-13T14:35:45","slug":"nerc-to-modify-standard-and-develop-compliance-guidance-to-accommodate-inverter-based-generation-technologies","status":"publish","type":"news-and-insights","link":"https:\/\/www.trccompanies.com\/fr\/insights\/nerc-to-modify-standard-and-develop-compliance-guidance-to-accommodate-inverter-based-generation-technologies\/","title":{"rendered":"NERC to Modify Standard and Develop Compliance Guidance to Accommodate Inverter-Based Generation Technologies"},"content":{"rendered":"<!-- Start Block: acf\/wysiwyg -->\n\n<section class=\"wysiwyg section-padding bg-white\">\n    <div class=\"container-fluid\">\n        \n        <div class=\"row\">\n                            <div class=\"col-lg-8 columns js-animated-content animated-content\">\n                                        <p>Renewable energy systems have dramatically changed the power generation resource mix. These new generation technologies no longer involve directly coupled rotating generators which were once standard in the industry. Now, inverters that change Direct Current (DC) electricity to the Alternating Current (AC) electricity suitable for delivery via AC transmission systems are becoming more prevalent, raising reliability concerns which NERC is addressing through modifications to its mandatory standards and compliance guidance.<\/p>\n                <\/div>\n                <div class=\"col-lg-4 columns js-animated-content animated-content\">\n                                        <div class=\"wysiwyg__links js-animated-content animated-content\">\n                        <div class=\"wysiwyg__links__top \">\n                                                        <h4>Related Services<\/h4>\n                                                                                    <ul class=\"js-animated-content animated-content\">\n                                                                <li><a href=\"https:\/\/www.trccompanies.com\/markets\/power-and-utilities\/electric-utilities\/\" target=\"_self\">Electric Utilities<\/a><\/li>\n                                                                <li><a href=\"https:\/\/www.trccompanies.com\/services\/electrical-power\/\" target=\"_self\">Electrical and Power<\/a><\/li>\n                                                                <li><a href=\"https:\/\/www.trccompanies.com\/markets\/power-and-utilities\/\" target=\"_self\">Power and Utilities<\/a><\/li>\n                                                                <li><a href=\"https:\/\/www.trccompanies.com\/markets\/power-and-utilities\/power-generation\/\" target=\"_self\">Power Generation<\/a><\/li>\n                                                                <li><a href=\"https:\/\/www.trccompanies.com\/markets\/power-and-utilities\/renewables\/solar-power-development\/\" target=\"_self\">Solar Power Development<\/a><\/li>\n                                                            <\/ul>\n                                                    <\/div>\n                                                                                                            <div class=\"wysiwyg__links__bottom\">\n                                    <a href=\"https:\/\/www.trccompanies.com\/services\" target=\"_self\">View All Services<\/a>\n                                <\/div>\n                                                                                                <\/div>\n                <\/div>\n                    <\/div>\n\n            <\/div>\n<\/section>\n<!-- End Block: acf\/wysiwyg -->\n\n<!-- Start Block: acf\/innerpage-accordion -->\n<section class=\"fx-accordion js-accordion section-margins\">\n    <div class=\"container-fluid\">\n        <div class=\"fx-accordion-flex\">\n                        <div class=\"fx-accordion-top-content js-animated-content animated-content\">\n                <div class=\"fx-accordion-top-content__inner\">\n                    <h2>NERC Standard PRC-024: Generator Frequency and Voltage Protective Relay Settings<\/h2>\n<p>On February 20, 2019 NERC approved a Standard Authorization Request (SAR) to initiate revisions to PRC-024 that address gaps related to inverter-based resources.<\/p>\n<p>Depending on how long standard development takes, it is possible for the modified standard to become effective sometime in 2020, subject to FERC approval.<\/p>\n                <\/div>\n            <\/div>\n                                    <div class=\"fx-accordion-right\">\n                <div class=\"fx-accordion__panels js-animated-content animated-content\">    \n                                        <article class=\"fx-accordion__panel js-accordion-item icon--collapse\" data-accordion-id=\"0\">\n                        <button class=\"fx-accordion__panel__toggle js-accordion-headline\" type=\"button\" data-accordion-id=\"0\">Based on recent lessons learned from disturbance analyses and the PRC-024-2 Gaps Whitepaper, the NERC Inverter\u2013Based Performance Task Force (IRPTF) identified potential modifications to PRC-024-2 to help inverter-based generator owners, operators, developers and equipment manufacturers understand how to respond to electric grid disturbances and continue to support the reliable operation of the Bulk Power System. The SAR proposes to revise PRC-024-2 as follows:<\/button>    \n                        <div class=\"fx-accordion__panel__content\">\n                            <ul>\n<li>Modify the region outside the \u201cNo Trip\u201d zone of the ride through curves so that registered entities do not interpret this area as a must trip zone.<\/li>\n<li>Clarify the \u201cOff Nominal Frequency Capability Curve\u201d and the \u201cCurve Data Point\u201d tables on pages 8 and 9 of PRC-024-2 to reconcile the 0.1 sec time delay in the frequency capability curve with the curve data point table that allows instantaneous operation.<\/li>\n<li>Clarify the language in point 5 of the Curve Details found in the Voltage Ride-Through Curve Clarifications to eliminate confusion about whether the curves pertain to RMS (Root Mean Square) or crest values.<\/li>\n<li>Remove inconsistency regarding per unit voltage and nominal operating voltage by correcting point 1 of the Curve Details found in the Voltage Ride-Through Curve Clarifications.<\/li>\n<li>Clarify the implied functionality of cumulative time by explicitly specifying the conditions for when cumulative values for low and high voltage curves start, stop, and reset.<\/li>\n<li>Clarify whether the voltage and frequency protection functions that can trip the inverter are subject to the standard\u2019s requirements.<\/li>\n<li>Clarify the definition and whether the use of momentary cessation for inverter-based resources within the \u201cNo Trip\u201d zone of PRC-024-2 is acceptable.<\/li>\n<\/ul>\n                                                    <\/div>\n                    <\/article>\n                                    <\/div>\n            <\/div>\n                    <\/div>\n    <\/div>\n<\/section>\n<!-- End Block: acf\/innerpage-accordion -->\n\n<!-- Start Block: acf\/wysiwyg -->\n\n<section class=\"wysiwyg section-padding bg-light-gradient\">\n    <div class=\"container-fluid\">\n                    <div class=\"wysiwyg__wrapper\">\n        \n        <div class=\"row\">\n                        <div class=\"col-lg-12\">\n                                                                                \n                                                <\/div>\n\n                            <div class=\"col-lg-12 js-animated-content animated-content\">\n                    <h3>NERC Standard PRC-019:\u00a0Coordination of Generating Unit or Plant Capabilities, Voltage Regulating\u00a0Controls and Protection<\/h3>\n<p>Industry guidance is under development within NERC to address the application of PRC-019 considering inverter-based resources operating modes. The standard verifies coordination of generating unit facility voltage regulating controls, limit functions, equipment capabilities and protection system settings. The standard was developed based on traditional rotating generation technology and calls for a five-year cyclic review of voltage regulating system controls (including in-service limiters and protection functions) with the applicable equipment capabilities and the settings of the applicable protection system devices and functions.<\/p>\n<p>When released, the PRC-019-2 Compliance Implementation Guidance will help develop a common understanding and identify methods for the coordination of voltage regulator controls, limit functions, and protective relay settings with respect to the standard. It will also establish reasonable assumptions for the calculations to meet the intent of the standard.<\/p>\n                <\/div>\n                                <\/div>\n\n                    <\/div>\n            <\/div>\n<\/section>\n<!-- End Block: acf\/wysiwyg -->\n\n<!-- Start Block: acf\/innerpage-promotion-blocks -->\n\n<section class=\"cta-right-image-text\">\n    <div class=\"cta-right-image-text__wrap\">\n        <div class=\"cta-right-image-text__text\">\n            <div class=\"cta-right-image-text__text__wrap js-animated-content animated-content\">\n                <h2>Next Steps<\/h2>\n<p>Utilities should stay informed regarding these two NERC initiatives to better understand and prepare for future compliance expectations.<\/p>\n<p>Because your company may have limited technical resources in certain areas of planning and design, TRC can supplement your existing staff and programs, helping you develop internal initiatives to proactively respond to the changing demands of NERC compliance. \u00a0Our experts provide assessment, corrective action and program implementation solutions for commissioning procedures, protection system design coordination with generating assets, including new renewable generating technology.<\/p>\n<p><a class=\"btn btn-primary\" href=\"https:\/\/www.trccompanies.com\/contact-us\/\">Contact Us<\/a><\/p>\n            <\/div>\n        <\/div>\n        <div class=\"cta-right-image-text__image\">\n            <img decoding=\"async\" width=\"2120\" height=\"1414\" src=\"https:\/\/www.trccompanies.com\/wp-content\/uploads\/2024\/10\/GettyImages-1477040706.jpg\" class=\"object-fit\" alt=\"GettyImages-1477040706\" srcset=\"https:\/\/www.trccompanies.com\/wp-content\/uploads\/2024\/10\/GettyImages-1477040706.jpg 2120w, https:\/\/www.trccompanies.com\/wp-content\/uploads\/2024\/10\/GettyImages-1477040706-300x200.jpg 300w, https:\/\/www.trccompanies.com\/wp-content\/uploads\/2024\/10\/GettyImages-1477040706-1024x683.jpg 1024w, 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src=\"https:\/\/www.trccompanies.com\/wp-content\/uploads\/2024\/08\/sim_card_download_24dp-black.svg\" class=\"attachment-full size-full\" alt=\"sim_card_download_24dp-black\" \/><\/a>\n                        <\/div>\n                                    <\/div>\n            <\/div>\n                        <div class=\"col-xxs-12 col-lg-4 material-card-item\">\n                <div class=\"material-card\">\n                                            <div class=\"material-card__details \">\n                            <h5 class=\"material-card__title\">\n                                <img decoding=\"async\" width=\"30\" height=\"30\" src=\"https:\/\/www.trccompanies.com\/wp-content\/uploads\/2024\/08\/picture_as_pdf_24dp-black.svg\" class=\"attachment-full size-full\" alt=\"picture_as_pdf_24dp-black\" \/>                                PRC-024-2 Standard Modifications Project Development                            <\/h5>\n                            <p class=\"material-card__description\">Publi\u00e9 <\/p>\n                        <\/div>\n                        <div class=\"material-card__bttn\">\n                                                        <a href=\"https:\/\/www.nerc.com\/pa\/Stand\/Pages\/Project-2018-04-Modifications-to-PRC-024-2.aspx\" target=\"_blank\"><span>t\u00e9l\u00e9charger le fichier<\/span><img decoding=\"async\" width=\"28\" height=\"28\" src=\"https:\/\/www.trccompanies.com\/wp-content\/uploads\/2024\/08\/sim_card_download_24dp-black.svg\" class=\"attachment-full size-full\" alt=\"sim_card_download_24dp-black\" \/><\/a>\n                        <\/div>\n                                    <\/div>\n            <\/div>\n                        <div class=\"col-xxs-12 col-lg-4 material-card-item\">\n                <div class=\"material-card\">\n                                            <div class=\"material-card__details \">\n                            <h5 class=\"material-card__title\">\n               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These new generation technologies no longer involve directly coupled rotating generators which were once standard in the industry. Now, inverters that change Direct Current (DC) electricity to the Alternating Current (AC) electricity suitable for delivery via AC transmission systems are becoming more prevalent, raising reliability&hellip;<\/p>\n","protected":false},"featured_media":5075,"template":"","tags":[596,523,251,280,282,291,305,320],"news-and-insights-category":[360],"services-category":[],"custom_category":[],"class_list":["post-1702","news-and-insights","type-news-and-insights","status-publish","has-post-thumbnail","hentry","tag-electric-utility","tag-electrical-and-power-engineering","tag-nerc","tag-power-and-utilities","tag-power-generation","tag-protection-and-controls","tag-renewables","tag-solar-power-development","news-and-insights-category-regulatory-updates"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NERC to Modify Standard and Develop Compliance Guidance to Accommodate Inverter-Based Generation Technologies - TRC Companies<\/title>\n<meta name=\"description\" content=\"Renewable energy systems have&#160;dramatically changed the power generation resource mix. 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