{"id":1870,"date":"2026-07-05T08:59:59","date_gmt":"2026-07-05T00:59:59","guid":{"rendered":"https:\/\/cnbygele.com\/blog\/static-var-compensation-system-design-basics\/"},"modified":"2026-07-06T14:58:59","modified_gmt":"2026-07-06T06:58:59","slug":"static-var-compensation-system-design-basics","status":"publish","type":"post","link":"https:\/\/cnbygele.com\/ru\/blog\/static-var-compensation-system-design-basics\/","title":{"rendered":"\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u044b \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u0438\u0441\u0442\u0435\u043c \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043a\u043e\u043c\u043f\u0435\u043d\u0441\u0430\u0446\u0438\u0438"},"content":{"rendered":"<div class=\"cnbyg-article\" style=\"max-width:820px;margin:0 auto;\">\n<p style=\"margin:0 0 16px;line-height:1.7;\">Designing a <strong>static var compensation system<\/strong> starts with accurate load measurement, then selects technology, protection, and control strategy. This guide focuses on practical evaluation steps for U.S. industrial and commercial buyers\u2014measurement, documentation, and lifecycle support\u2014not generic marketing claims. Where equipment selection is involved, cross-check public specifications on cnbygele.com and confirm project-specific limits with your utility or consulting engineer. Section checklists can be reused as RFQ attachments and commissioning handover outlines.<\/p>\n<nav style=\"background:#f7f9fb;border:1px solid #e3e8ee;border-radius:8px;padding:14px 18px;margin:0 0 24px;\">\n<p style=\"margin:0 0 16px;line-height:1.7;\"><strong>On this page<\/strong><\/p>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7;\">\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-1-site-survey-and-data\">Part 1. Site Survey and Data<\/a><\/li>\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-2-system-architecture\">Part 2. System Architecture<\/a><\/li>\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-3-protection-and-standards\">Part 3. Protection and Standards<\/a><\/li>\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-4-documentation-and-handover-checklist\">Part 4. Documentation and Handover Checklist<\/a><\/li>\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-5-commissioning-monitoring-and-long-term-op\">Part 5. Commissioning, Monitoring, and Long-Term Operations<\/a><\/li>\n<\/ul>\n<\/nav>\n<figure style=\"margin:26px 0;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px;\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/07\/static-var-compensation-system-design-basics-cover-2.webp\" alt=\"Static var compensation system design concept illustration\" width=\"640\" height=\"360\"\/><\/figure>\n<h2 id=\"part-1-site-survey-and-data\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 1. Site Survey and Data<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Collect voltage, current, PF, THD, and load duty cycles for at least one representative week.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Reactive power compensation addresses power factor, voltage drop, and transformer loading\u2014not active energy consumption directly.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Utilities may apply demand charges or PF penalties; compensation can reduce billed kVA if aligned with tariff rules.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Automatic <a href=\"https:\/\/cnbygele.com\/product\/by75-series-reactive-power-compensation-controller\/\">reactive power controllers<\/a> switch capacitor steps based on measured reactive power or power factor.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Capture nameplate data, single-line drawings, and utility interconnection rules in the RFQ package to reduce back-and-forth during technical review.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">If your site mixes linear motors and nonlinear electronics, treat harmonic and reactive targets as linked requirements rather than separate purchases.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Define acceptance criteria before shipment\u2014power factor, step response, or THD at agreed load points\u2014so commissioning disputes are less likely.<\/p>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Include motor start events\u2014they define peak reactive demand.<\/div>\n<h2 id=\"part-2-system-architecture\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 2. System Architecture<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Centralized compensation at the main bus is common; larger sites may use zone compensation near heavy loads.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Sizing should use interval data from power analyzers rather than nameplate assumptions alone.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Over-compensation raises voltage; under-compensation leaves penalties and thermal stress unresolved.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">When load varies within seconds, consider <a href=\"https:\/\/cnbygele.com\/product\/svg-static-var-generators-2\/\">SVG product line<\/a> instead of rapid capacitor switching that wears contactors.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Capture nameplate data, single-line drawings, and utility interconnection rules in the RFQ package to reduce back-and-forth during technical review.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">If your site mixes linear motors and nonlinear electronics, treat harmonic and reactive targets as linked requirements rather than separate purchases.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Define acceptance criteria before shipment\u2014power factor, step response, or THD at agreed load points\u2014so commissioning disputes are less likely.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:0 0 20px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Design choice<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Pros<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Cons<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Centralized<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Single control point<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Long cable reactive loss<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Distributed<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Local support<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Higher equipment count<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure style=\"margin:26px 0;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px;\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/07\/static-var-compensation-system-design-basics-body-2.webp\" alt=\"static var compensation system \u2014 CNBYG product in industrial power facility (illustrative)\" width=\"640\" height=\"360\"\/><\/figure>\n<h2 id=\"part-3-protection-and-standards\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 3. Protection and Standards<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Coordinate overvoltage, inrush, and harmonic limits with utility interconnection requirements.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Installation must respect clearances, ventilation, and arc-flash labeling per site safety program.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">As-built drawings and test records support future audits and insurance reviews.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">See <a href=\"https:\/\/cnbygele.com\/solution\/power-quality-system\/\">CNBYG power quality system<\/a> options when multiple feeders share compensation goals.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Capture nameplate data, single-line drawings, and utility interconnection rules in the RFQ package to reduce back-and-forth during technical review.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">If your site mixes linear motors and nonlinear electronics, treat harmonic and reactive targets as linked requirements rather than separate purchases.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Define acceptance criteria before shipment\u2014power factor, step response, or THD at agreed load points\u2014so commissioning disputes are less likely.<\/p>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Keep as-built single-line diagrams updated after any feeder changes.<\/div>\n<div class=\"warning-box\" style=\"border-left:4px solid #f9a825;background:#fffbf0;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Important:<\/strong> Always verify short-circuit duty of switching devices and bus bracing.<\/div>\n<h2 id=\"part-4-documentation-and-handover-checklist\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 4. Documentation and Handover Checklist<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Industrial acceptance should not rely on energization alone\u2014documentation proves ratings, safety, and maintainability for the next maintenance cycle.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Use the tables below as a starting RFQ checklist; your utility or EPC contract may require additional items.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">For product-specific datasheets, cross-check <a href=\"https:\/\/cnbygele.com\/product\/bsmjparallel-series-self-healing-low-voltage-parallel-capacitors\/\">related CNBYG product pages<\/a> and request any missing type test excerpts.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Align factory acceptance tests with items your insurer or utility interconnection agreement may require.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">When comparing quotations, normalize currency, Incoterms, and included commissioning services before ranking suppliers.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:0 0 20px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Document \/ item<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Purpose<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">When to request<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Factory type test report<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Verify rated voltage, kvar, and temperature rise<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Before purchase order<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Single-line diagram template<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Panel layout and protection coordination<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Design phase<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Communication register map<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">BMS\/SCADA integration<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Before FAT\/SAT<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Spare parts list (5+ year)<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Lifecycle planning<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Contract negotiation<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Commissioning checklist<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Acceptance testing<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Before energization<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width:100%;border-collapse:collapse;margin:0 0 20px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Site condition<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Risk<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Mitigation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Harmonics present<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Resonance with capacitor steps<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Detuning reactors or APF per IEEE 519 review<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Outdoor installation<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Temperature \/ humidity<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Confirm enclosure and capacitor technology<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Frequent motor switching<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Inrush and step transients<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Proper switching sequence and controller delays<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Utility PF penalties<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Operating cost<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Size to measured kvar at billing interval<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Store factory test reports with the panel serial number for future warranty claims.<\/div>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Confirm imperial and metric dimensions if shipping to mixed-design sites.<\/div>\n<h2 id=\"part-5-commissioning-monitoring-and-long-term-op\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 5. Commissioning, Monitoring, and Long-Term Operations<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Commissioning should verify that reactive and harmonic targets are met at the point of common coupling, not only at the compensation cabinet terminals.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Functional tests typically include step response, power factor at defined load points, and harmonic readings compared to contract or IEEE 519 guidance where applicable.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Monitoring after energization helps catch hunting, unexpected resonance, or capacitor cell failures before they affect production uptime.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Train maintenance staff on lockout\/tagout, discharge timing for capacitors, and which alarms require immediate shutdown versus scheduled service.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Schedule a post-warranty review to reassess load changes\u2014production line upgrades often change compensation needs within three to five years.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Utility account managers can clarify whether PF adjustments affect demand charges only, energy charges, or both\u2014align KPIs before writing acceptance tests.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Keep a spare-parts criticality list (fuses, contactors, fan assemblies, control boards) based on lead time and production impact, not catalog defaults alone.<\/p>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Log baseline power quality measurements after commissioning for future troubleshooting comparisons.<\/div>\n<h2 style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Recommended CNBYG Products<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">For project support, explore our <a href=\"https:\/\/cnbygele.com\/contact-us\/\">related product line<\/a>, <a href=\"https:\/\/cnbygele.com\/solution\/power-quality-system\/\">power quality system options<\/a>, and <a href=\"https:\/\/cnbygele.com\/about-us\/\">OEM\/ODM capabilities<\/a> on cnbygele.com.<\/p>\n<figure style=\"margin:26px 0;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px;\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/07\/static-var-compensation-system-design-basics-product-1.webp\" alt=\"CNBYG compensation product recommendation (illustrative scene)\" width=\"640\" height=\"360\"\/><\/figure>\n<h2 style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">FAQ<\/h2>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">How do you size a static var compensation system?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Sizing is driven by load flow and dynamic performance studies to determine required leading and lagging reactive power. Public utility criteria (PJM) list PSS\/E load flow, dynamic studies, and harmonic impedance studies as common tasks done with the manufacturer.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">What studies are needed for SVC design?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Beyond sizing studies, PJM criteria call for insulation coordination, surge and lightning protection design, interference studies (radio, audible noise), and reliability\/availability (RAM) requirements. Components must meet ANSI, IEEE, NEMA and related standards.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">How is an SVC protected?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Protection references show TCR and TSC branches typically delta-connected with three differential zones, each covering one set of thyristor valves and one reactive element, overlapping at the thyristor CTs. Modern microprocessor relays consolidate these functions.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">What data should a site survey collect first?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Collect voltage, current, power factor, THD, and load duty cycles over a representative period, and include motor start events since they define peak reactive demand. Accurate data improves sizing and avoids over\/under compensation.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">How fast does an SVC control system respond?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Vendor documentation cites reaction times around 5 ms for arc-furnace-type loads and roughly 25-100 ms for general industrial loads and grid substations, depending on the controlled parameter.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">Should an APF be integrated into the same panel?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">When THD is high, a combined study with an active power filter may be required. Coordinating reactive compensation and harmonic mitigation avoids resonance and treats power quality as one system.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">Centralized or distributed compensation?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Centralized compensation at the main bus is common and simpler to control; distributed compensation near heavy loads provides local support at the cost of more equipment. The choice follows the load map and cable reactive losses.<\/p>\n<h2 style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">References<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7;\">\n<li><a href=\"https:\/\/www.pjm.com\/-\/media\/DotCom\/planning\/design-engineering\/maac-standards\/static-var-compensators.pdf\" rel=\"nofollow noopener\" target=\"_blank\">PJM \u2014 SVC Design Criteria (PDF)<\/a><\/li>\n<li><a href=\"https:\/\/wprcarchives.org\/wp-content\/uploads\/2024\/04\/Findley_Aaron_Lessons-Learned-in-Static-Var-Compensator-Protection_2016.pdf\" rel=\"nofollow noopener\" target=\"_blank\">WPRC \u2014 Lessons Learned in SVC Protection (PDF)<\/a><\/li>\n<li><a href=\"https:\/\/ukkz.com\/en\/catalog\/static-var-compensator.html\" rel=\"nofollow noopener\" target=\"_blank\">UKKZ \u2014 SVC control &#038; protection<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.55041\/ijsrem53884\" rel=\"nofollow noopener\" target=\"_blank\">IJSREM \u2014 Optimal Placement &#038; Sizing of SVC<\/a><\/li>\n<\/ul>\n<p style=\"margin:0 0 16px;line-height:1.7;\"><strong>Ready to discuss your project?<\/strong> Contact <a href=\"https:\/\/cnbygele.com\/contact-us\/\">CNBYG engineering support<\/a> with your voltage class, load list, and target power factor or THD goals.<\/p>\n<\/div>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do you size a static var compensation system?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Sizing is driven by load flow and dynamic performance studies to determine required leading and lagging reactive power. 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Accurate data improves sizing and avoids over\/under compensation.\"}}, {\"@type\": \"Question\", \"name\": \"How fast does an SVC control system respond?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Vendor documentation cites reaction times around 5 ms for arc-furnace-type loads and roughly 25-100 ms for general industrial loads and grid substations, depending on the controlled parameter.\"}}, {\"@type\": \"Question\", \"name\": \"Should an APF be integrated into the same panel?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"When THD is high, a combined study with an active power filter may be required. Coordinating reactive compensation and harmonic mitigation avoids resonance and treats power quality as one system.\"}}, {\"@type\": \"Question\", \"name\": \"Centralized or distributed compensation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Centralized compensation at the main bus is common and simpler to control; distributed compensation near heavy loads provides local support at the cost of more equipment. The choice follows the load map and cable reactive losses.\"}}]}<\/script><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BlogPosting\", \"headline\": \"Static Var Compensation System Design Basics\", \"description\": \"Static var compensation system design basics: load survey, kvar sizing, bus configuration, protection, and coordination with APF for industrial sites.\", \"keywords\": \"static var compensation system\", \"inLanguage\": \"en-US\", \"author\": {\"@type\": \"Organization\", \"name\": \"CNBYG\"}, \"publisher\": {\"@type\": \"Organization\", \"name\": \"CNBYG\", \"url\": \"https:\/\/cnbygele.com\/\"}, \"mainEntityOfPage\": {\"@type\": \"WebPage\", \"@id\": \"https:\/\/cnbygele.com\/blog\/static-var-compensation-system-design-basics\/\"}, \"url\": \"https:\/\/cnbygele.com\/blog\/static-var-compensation-system-design-basics\/\", \"image\": \"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/07\/static-var-compensation-system-design-basics-cover-2.webp\", \"datePublished\": \"2026-07-05\", \"dateModified\": \"2026-07-06\"}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0430\u0441\u043f\u0435\u043a\u0442\u044b \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043a\u043e\u043c\u043f\u0435\u043d\u0441\u0430\u0446\u0438\u0438 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u043d\u043e\u0441\u0442\u0438: \u0430\u043d\u0430\u043b\u0438\u0437 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438, \u0432\u044b\u0431\u043e\u0440 \u043c\u043e\u0449\u043d\u043e\u0441\u0442\u0438 kvar, \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f \u0448\u0438\u043d, \u0437\u0430\u0449\u0438\u0442\u0430 \u0438 \u043a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0446\u0438\u044f \u0441 \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u043c\u0438 \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u043c\u0438 (APF) \u043f\u0440\u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0441\u0442\u0438.<\/p>","protected":false},"author":3,"featured_media":1965,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1870","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/posts\/1870","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/comments?post=1870"}],"version-history":[{"count":6,"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/posts\/1870\/revisions"}],"predecessor-version":[{"id":1990,"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/posts\/1870\/revisions\/1990"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/media\/1965"}],"wp:attachment":[{"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/media?parent=1870"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/categories?post=1870"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cnbygele.com\/ru\/wp-json\/wp\/v2\/tags?post=1870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}