{"id":6994,"date":"2022-04-08T13:49:36","date_gmt":"2022-04-08T13:49:36","guid":{"rendered":"http:\/\/94.46.14.215\/~quadrisol\/?page_id=6994"},"modified":"2023-05-24T11:29:50","modified_gmt":"2023-05-24T11:29:50","slug":"protecoes-homopolares","status":"publish","type":"page","link":"https:\/\/www.quadrisol.pt\/en\/protecoes-homopolares\/","title":{"rendered":"Homopolar protection"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"6994\" class=\"elementor elementor-6994\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-844612d elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-elementor-content-no\" data-id=\"844612d\" data-element_type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-928d8c2\" data-id=\"928d8c2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dd76f22 elementor-widget elementor-widget-stal_core_section_title\" data-id=\"dd76f22\" data-element_type=\"widget\" data-widget_type=\"stal_core_section_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"qodef-shortcode qodef-m  qodef-section-title qodef-alignment--center\">\n\t\t<div class=\"qodef-m-title-wrap\">\n\t\t<h1 class=\"qodef-m-title\" >\n\t\t\t\t\tHomopolar protection\t\t\t<\/h1>\n\t\n\t<\/div>\n\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-08725b3 elementor-widget elementor-widget-stal_core_section_title\" data-id=\"08725b3\" data-element_type=\"widget\" data-widget_type=\"stal_core_section_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"qodef-shortcode qodef-m  qodef-section-title qodef-alignment--left\">\n\t\t<div class=\"qodef-m-title-wrap\">\n\t\t<h2 class=\"qodef-m-title\" >\n\t\t\t\t\tSelf-Consumption Production Unit with a connection power &gt; 250 kW\t\t\t<\/h2>\n\t\n\t<\/div>\n\t\t<p class=\"qodef-m-text\" >The installation of an interconnection protection is required when a production unit is installed in a place connected to medium voltage with power &gt; 250Kw. The producer must deliver the project elements of the production unit for self-consumption to the entity that supplies the electricity grid. The electricity distribution entity is responsible for providing the interconnection protection parameters.<\/p>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-92221a0 elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-elementor-content-no\" data-id=\"92221a0\" data-element_type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;,&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d59252b\" data-id=\"d59252b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d149fe2 elementor-widget elementor-widget-text-editor\" data-id=\"d149fe2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: left;\">To start the process, the producer should send the project elements mentioned below:<\/p><ul style=\"text-align: left;\"><li>Registration no. of the production unit assigned by the Electronic System for Registration of Production Units (SERUP);<\/li><li>Installed power and power of connection of the production unit;<\/li><li>Project description for the insertion of the production unit in the consumer installation;<\/li><li>Plan showing the location of the interconnection protection system and the metering, metering and telemetering system envisaged<\/li><li>Constitution of the generating sets, with their main characteristics<\/li><li>Single-line diagram of insertion into the Public Service Electrical Network (RESP), with identification of connection point, as described in the operating protocol;<\/li><li>Interconnection panel electrification schemes (according to \"good art rules\"), including:<ul><li>Protection relay connections (including the ANSI code protection functions);<\/li><li>Measuring equipment;<\/li><li>Energy metering \/ telemetering;<\/li><li>Electrification schemes of the meter board (according to the \"good art rules\"):<\/li><li>Own generation count;<\/li><li>Network interconnection count.<\/li><\/ul><\/li><\/ul><ul><li>Technical characteristics of the equipment:<ul><li style=\"text-align: left;\">Protection relays (including the one provided for power limitation and maximum homopolar voltage, if applicable);<\/li><li style=\"text-align: left;\">Current and voltage transformers and their test reports;<\/li><li style=\"text-align: left;\">Meters and their test reports;<\/li><li style=\"text-align: left;\">Firing coils;<\/li><li style=\"text-align: left;\">Interconnection circuit breaker (cut-out time not exceeding 70 msec)<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8ed8fbc elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-elementor-content-no\" data-id=\"8ed8fbc\" data-element_type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d795ccc\" data-id=\"d795ccc\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6ac2577 elementor-widget elementor-widget-stal_core_section_title\" data-id=\"6ac2577\" data-element_type=\"widget\" data-widget_type=\"stal_core_section_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"qodef-shortcode qodef-m  qodef-section-title qodef-alignment--left\">\n\t\t<div class=\"qodef-m-title-wrap\">\n\t\t<h3 class=\"qodef-m-title\" >\n\t\t\t\t\tInterconnection protection\t\t\t<\/h3>\n\t\n\t<\/div>\n\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d68a3d0 elementor-widget elementor-widget-text-editor\" data-id=\"d68a3d0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: left;\"><span style=\"color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; font-weight: var( --e-global-typography-text-font-weight );\">The protection and automation system contains an essential element for the operation of the electrical system, with the objective that its design, coordination and action (in the face of disturbances in the network) does not affect the quality and stability of the electrical system.<\/span><\/p><p style=\"text-align: left;\">Therefore, the small production producer or production units for self-consumption must equip the production installation with interconnection protector, in order to ensure quick and automatic separation from the grid, regardless of a defect in the grid, either in voluntary manoeuvre, in order to ensure protection to the national grid.<\/p><p style=\"text-align: left;\">The purpose of this type of protection is to safeguard the electrical network and all customers connected to it against incorrect injection of energy due to a fault in the generation installation or electrical network. It is not intended to protect the generation installation or any of its components.<\/p><p style=\"text-align: left;\">The producer must equip its production installation with interconnection-level protections that ensure fast and automatic separation from the National Distribution Network, in accordance with the specifications in the \"Technical Guide for Independent Power Generation Installations\" and other applicable legislation.<\/p><p style=\"text-align: left;\">The electricity distributor suggests that the interconnection protection function block should have the following constitution:<\/p><ol><li style=\"text-align: left;\">Maximum residual voltage \/ homopolar voltage [ANSI 59N];<\/li><li style=\"text-align: left;\">Minimum three-phase voltage [ANSI 27];<\/li><li style=\"text-align: left;\">Maximum three-phase voltage [ANSI 59];<\/li><li style=\"text-align: left;\">Maximum frequency [ANSI 81O];<\/li><li style=\"text-align: left;\">Minimum frequency [ANSI 81U];<\/li><li style=\"text-align: left;\">Maximum three-phase current [ANSI 50\/51];<\/li><li style=\"text-align: left;\">Maximum reverse sequence strength [ANSI 46];<\/li><li style=\"text-align: left;\">Power directional;<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2094e23 elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-elementor-content-no\" data-id=\"2094e23\" data-element_type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;,&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5a61db5\" data-id=\"5a61db5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2784ddf elementor-widget elementor-widget-stal_core_section_title\" data-id=\"2784ddf\" data-element_type=\"widget\" data-widget_type=\"stal_core_section_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"qodef-shortcode qodef-m  qodef-section-title qodef-alignment--left\">\n\t\t<div class=\"qodef-m-title-wrap\">\n\t\t<h3 class=\"qodef-m-title\" >\n\t\t\t\t\tShared medium voltage metering system\t\t\t<\/h3>\n\t\n\t<\/div>\n\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a285527 elementor-widget elementor-widget-text-editor\" data-id=\"a285527\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: left;\"><span style=\"color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; font-weight: var( --e-global-typography-text-font-weight );\">Voltage transformers and current transformers supplied by the distribution company remain the property of the same, with their exclusive use for mediating transient power.<\/span><\/p><p style=\"text-align: left;\">For the Self-consumption Production Units, if required by the producer, the transformers can be used for protection and metering functions of the protection unit, with the need for dedicated and separate windings for metering and protection.<\/p><p style=\"text-align: left;\">In this case, the provisions of the guide on metering, reading and provision of data are complied with, and an audit of the metering system is required on the date of entry into service.<\/p><p style=\"text-align: left;\">In case the shared voltage transformers and current transformers satisfy the metering, metering systems of the installation, production unit and the protection systems, with dedicated and separate secondary windings for metering and protection functions, it becomes the property and maintenance of the same by the producer.<\/p><p style=\"text-align: left;\">Fonte:\u00a0<a href=\"https:\/\/www.e-redes.pt\/pt-pt\/ligacao-250-kw\" target=\"_blank\" rel=\"noopener\">https:\/\/www.e-redes.pt\/pt-pt\/ligacao-250-kw<\/a>\u00a0&#8211; e-rede.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5cd315d4 elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-elementor-content-no\" data-id=\"5cd315d4\" data-element_type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;,&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-59a1c440\" data-id=\"59a1c440\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7614b465 elementor-widget elementor-widget-stal_core_section_title\" data-id=\"7614b465\" data-element_type=\"widget\" data-widget_type=\"stal_core_section_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"qodef-shortcode qodef-m  qodef-section-title qodef-alignment--center\">\n\t\t<div class=\"qodef-m-title-wrap\">\n\t\t<h3 class=\"qodef-m-title\" >\n\t\t\t\t\tAsk for your quote now!\t\t\t<\/h3>\n\t\n\t<\/div>\n\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9402a5b elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-elementor-content-no\" data-id=\"9402a5b\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-347cce6\" data-id=\"347cce6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cf68f36 elementor-widget elementor-widget-qi_addons_for_elementor_wp_forms\" data-id=\"cf68f36\" data-element_type=\"widget\" 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