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SERVICES
  • Advantages of Static Var Generator

    Compared to a traditional Static Var Compensator (SVC) with an LC system, YTPQC Static Var Generator (SVG or ASVG) offers many excellent features including enhanced stability, extended product lifetime, fast response, wide power range, large capacity, smooth tuning, low harmonics, stable system voltage, and many more, for greatly improved power quality. Leading Technology and Optimal Power Factor Correction Three level topology Ultra-compact Modular design Fastest switching frequency 25.6kHz Lowest power consumption ≤ 2.5% Leading dissipation technology Continuous power factor correction Precise PF maintain -1.0 ≤ CosΦ ≤ 1.0 Both capacitive and inductive control No over or under-compensation Hybrid power factor correction Advanced Networks Performance and High Quality Assurance Saving Electricity Bills Energy saving 3 phase load balancing Low noise Friendly Human Machine Interface TI DSP, Infineon or Semikron IGBT High Stability,avoids resonance Both Hardware and software protection High Reliability Test Good Environmental adaptability

  • Applications of Static Var Generator

    SVG have many low and high voltage potential applications where their use offers many benefits. ⦿ Installations with fast changing reactive power demand like electric arc furnaces and ball mills. ⦿ Highly dynamic loads where the power factor fluctuates rapidly or in big steps like cranes, sawmill machinery, welding machines, etc. ⦿ Correction of leading power factor like in data centers allowing back-up generators operation. ⦿ UPC systems. ⦿ Solar inverters and wind turbine generators. ⦿ Railway electrification systems: Trains & trams ⦿ Loads with low power factor: Motors, cables, lightly loaded transformers, lighting, etc.

  • Static Var Generator SVG Modular Design

    YTPQC Static Var Generator has a advanced modular design. Usually YTPQC-SVG consists of one or several AHF modules and an optional touched LCD Human Machine Interface. Each SVG module is an independent harmonic filtering system, and users can change the harmonic filtering system rating by adding or removing SVG modules. According to the mounting type, YTPQC-SVG can  be divided into Rack Modular SVG, Wall-mounted SVG and free landing SVG. Wall Mounted Static Var Generator Module: Rack type Static Var Generator Module: Free landing Static Var Generator Module: Note: YT Rack type AHF modules support Side installation and Front installation,two types. And the installation can be vertical or horizontal type in cabinets.

  • Benefits of Static Var Generator

    YT Static Var Generator Benefits: Main benefits of YT Static Var Generator SVG can be summarized as: 1. Capability to deliver instantaneous capacitive and inductive reactive power compensation. 2. Optimized for highly dynamic applications where conventional capacitor banks or reactor banks are unable to track the loads. 3. Allow compensation of loads fed by generators without risk of overcompensation. 4. Inject reactive power that is required by the load at each instant into the system. 5. Not over compensation: Compensation capacity equals the installed capacity. 6. Unaffected by network voltage drop. Full reactive current can be provided to meet required demand under reduced network voltage level. 7. Easy installation and commissioning.

  • Hybrid Static Var Generator

    YTPQC-HPFC Hybrid Static Var Generator HPFC (Hybrid Var Generator or Compensator) integrate Thyristor Switched Capacitor (TSC) and Static Var Generator, modular design, with dynamic compensation functions of reactive power compensation, harmonics compensation, voltage fluctuation, load unbalance. Also, this HPFC has high cost performance, and without overcompensation or under compensation.Comparing to traditional SVC from economic, technical and performance perspectives, YTPQC-HPFC use passive capacitor modules coarse tuning firstly, then fine tuning by active SVG module. YT Hybrid Static Var Generator has high reliability, safety and economic, TSC module can continue work when SVG module failure. YTPQC-HPFC Advantages · Single HMI Enables Simple and Visual Operation · Independent Logic Integrated Within Each Module · Ultra-fast reactive current compensation for transient or cyclical loads · Infinitely variable control · Instantaneous response for inrush support · Independently compensates each phase · Heavy duty dry capacitors provide no risk of fluid leakage, no environmental pollution and no need for drip pans · Detuned iron core reactors prevent resonance · Step less power factor correction · IGBT based power electronic technology · Best-in-class harmonic cancellation up to 50th harmonic and less than 3% THDi · Energy efficient 3-level IGBT inverter technology YTPQC-HPFC Work Method Connected in parallel with the supply or load, Hybrid Active Power Factor Correction units provide a dynamic controlled current source capable of matching any waveform in real-time. YTPQC-HPFC units predominantly utilise the integrated capacitor bank steps to provide the fundamental capacitive reactive power, with the dynamic compensation (capacitive or inductive) provided by the in-built SVG. The HPFC unit’s ability to address reactive power between the capacitor bank steps removes the requirement for differing capacitor bank sizes and results in a smooth output within the network. Integration of both technologies within the HPFC unit allows the administration of harmonic filtering, voltage variation reduction, flicker mitigation and balance of supply simultaneously. Hybrid Static Var Generator have been designed with two distinct operational modes: Ultra-fast and PFC mode. a. The ultra-fast operational mode has been designed to allow rapid ‘open-loop’ reactive power compensation. The ultra-fast operational mode reduces minimum step switching times from one second (as observed within PFC mode) to <0.2 seconds. b. PFC mode provides a more traditional operational mode, allowing operators closed loop system control. Combining the technical advantages of YTPQC Static VAR Generators (SVG) with the cost effectiveness of traditional contactor or thyristor switched detuned filter capacitor bank technologies ensures an economical, step-less, real-time compensator operated through a single Human Machine Interface (HMI). End User's Benefits · Lower energy costs · Increas...

  • Applications of Active Harmonic Filter

    YTPQC-AHF Active Harmonic Filter is a perfect and comprehensive solution to the power quality issues of power grid , such as harmonics, reactive power and 3 phase load unbalance. YTPQC-AHF which is in parallel to power grid can detect the harmonic wave in power grid in time, generate the reverse-phase compensation current through the converter and dynamically filter the harmonic wave in power grid. Some of the most common applications for Active Harmonic Filters are: Food & beverage industry Automotive industry Oil & gas industry Paper & Chemical industry Pharmaceutical industry Textile & clothing industry Steel industry Cement industry Microelectronic manufacturers Other industries with AC or DC drives

  • Consequences of Current Harmonics in Networks

    Consequences of harmonic pollution The consequences of harmonic pollution in an installation vary from equipment defects to completely burned-out distribution boards. Depending on the degree of harmonic pollution and the sensitivity of connected equipment, negative effects of harmonic pollution may reveal themselves more quickly. Equipment failure Unexpected disconnection of security devices Generators do not start up when needed Spontaneous ignition of cables and distribution boards Unnecessary losses of energy and capacity Reduced lifespan of equipment Unnecessary service and maintenance costs Such as, Frequency inverters/variable speed drives (for AC and DC motors) Industrial devices (welding equipment, electric arc furnaces, induction ovens, battery dischargers) Uninterruptible Power Supplies (UPS) IT equipment (servers, computers, printers) Lightning with electric loads (TL-lightning, LED lightning) Most devices that use semiconductors (transistors and/or diodes, solid state relays) View YT AHF solution, choose the best for your system

  • Current Harmonics and Non linear-Loads

    Causes of Harmonics in Networks. Current Harmonics are caused by the harmonic currents of non-linear loads. These non-linear loads are electrical devices that do not demonstrate ‘linear’ behavior; the voltage and current are not synchronous. These devices attempt to convert the pure sinusoidal alternating voltage into a direct current. The resulting alternating current is no longer purely sinusoidal. Power electronics, or equipment in which power electronics are present, are typical non-linear loads. In industrial and commercial installations, this type of equipment is being used to an increasing extent. As a result, harmonic pollution within these installations is increasing exponentially. Examples of non-linear loads Frequency inverters/variable speed drives (for AC and DC motors) Industrial devices (welding equipment, electric arc furnaces, induction ovens, battery dischargers) Uninterruptible Power Supplies (UPS) IT equipment (servers, computers, printers) Lightning with electric loads (TL-lightning, LED lightning) Most devices that use semiconductors (transistors and/or diodes, solid state relays)

  • Types of Reactive Power

    Types of Reactive Power Shifting reactive power: Caused by inductive and/or capacitive loads. These ensure current ‘lags/runs late’ behind the voltage (inductive) or that the current ‘leads/runs ahead’ of the voltage (capacitive). Distortive reactive power: This is the ‘unwanted’ part of the apparent power associated with harmonic pollution caused by non-linear loads. A combination of these types may also occur. Certain loads such as UPS systems, cause both inductive and distortive reactive power. Specialist knowledge is required to find the right solution, or combination of solutions. YTPQC has the knowledge, experience and high-quality products to support this. Where are the Distortive reactive power? Arises as a result of harmonic components in the electrical installation. Occurs especially in installations with (many) non-linear loads (rectifiers, frequency converters, UPS). Also found in low-voltage installations. Harmonic currents cause deformations of the current, causing voltage distortion. Where are the Inductive reactive power? Arises as a result of inductive loads. Occurs especially in installations with many inductive loads (including transformers and welding equipment). For example: industrial installations. The current and voltage are not in phase; the current ‘lags/runs late’ behind the voltage. Where are the Capacitive reactive power? Arises due to capacitive loads. Occurs especially in installations with a high proportion of electronics. Also found in installations with oversized capacitors. For example: data centers, hospitals, tunnels. The current and voltage are not in phase; the current ‘leads/runs ahead’ on the voltage. YTPQC-SVG Static Var Generator Static Var Generator is the perfect solution for above Reactive Power, realize the PF to 1.0 in real time.      

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