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TBBFX10 (6) higher voltage EPTTt capacitor box sort compensation unit

1. Overview
TBBFX sort large voltage EPTTt capacitor box type compensation total established system (hereinafter referred to as the unit) is a new type of EPTTt capacitor compensation complete set unit deveXiHu (West EPT) Dis.Hu (West EPT) Dis.ed by our organization in accordance to the box kind variable form on the basis of tbbf. It is divided into equal or unequal ability groups according to the capacitor, and adopts EPT contactor or EPT circuit breaker and voltage and reactive EPTT automated management gadget to realize automated switching and handle of capacitor financial institution The new device can instantly adjust bus voltage, compensate reactive EPTT, boost voltage qualification price and EPTT issue, and has the attributes of security, trustworthiness, convenience and fleXiHu (West EPT) Dis.bility, creating entire use of capacitor capability and improving effectiveness.
In accordance to the overall quantity of reactive EPTT to be compensated, the unit can be instantly switched on and off as a EPTT team, and several sub units with equivalent or unequal capacity can be developed in accordance to the demands and demands. The voltage and reactive EPTT of the EPTT grid are detected by the automatic switching system, and the goal of automated switching capacitor is attained by sensible handle and safety.
The system is suitable for 220kV and underneath substations in EPTT EPTTs, electric EPTT bureaus and massive factories and EPTs. In the 6-10KV EPTT provide method, the reactive EPTT is routinely compensated and managed. The focus on cos phi or QC benefit set by the consumer can be accomplished by utilizing the switching function of capacitor, so that the system voltage and reactive EPTT are in the greatest condition immediately.
2. EPTal situations for use
two.one outdoor use
two.two the altitude shall not exceed 2000m
2.three the ambient air temperature is – twenty five ~ forty
2.four relative humidity: day-to-day common no a lot more than 95%, regular monthly regular no a lot more than 90%
2.5 the surrounding air is free from corrosive fuel, steam and other critical air pollution, no combustible gas, no EPT, no explosion threat.
two.six spots without having recurrent violent vibration.
two.seven the network or bus voltage EPTT source aspect of the set up point shall be free from large waveform distortion and the impact of higher-orEPTTharmonic supply. The voltage waveform distortion rate and harmonic content material shall not exceed the provisions of GB / T14549-93 quotvoltage good quality, general public EPTT grid harmonics quot.
3. Structural attributes
TBBFX variety high voltage EPTTt capacitor device is of box kind structure. The capacitor financial institutions in the box are organized in orEPTTof multi cabinet assembly like prefabricated substation. The EPTT cabinet is created of large-high quality chilly-rolled steel plate bending welding or EPT zinc coating plate bending assembly. The box entire body is manufactured of higher-high quality composite color plate or steel plate, which has very good heat insulation efficiency and h2o-proof influence. There are solitary or double doorways in the JCEP and back again of the box, the leading, bottom and facet sealing plates, and the ventilation and warmth dissipation home windows are set up, which has good heat dissipation and air flow influence. An instrument place is set on the leading of the cabinet in the box to arrange and prepare the relay protection device of the unit cupboard. The system is mainly composed of a solitary EPTTt capacitor, geared up with a one capacitor protection fuse, discharge coil, zinc oXiHu (West EPT) Dis.de arrester and CKS dry-sort series reactor (the reactor can also be peripheral), as nicely as trustworthy no re ignition, no bounce EPT contactor (or EPT circuit breaker and sulfur hexafluoride circuit breaker) as the grouping computerized switching tools of the EPTTt capacitor bank JCEP bar tin plating is adopted for connecting bus bar, and its condition and framework are shown in Fig. 1 and Fig. two. The EPTT unit is geared up with sign instrument and relay safety or microcomputer safety unit according to unit cupboard. The unit has the subsequent traits:
3.one the EPTTt capacitor banking institutions with equivalent or unequal ability can fleXiHu (West EPT) Dis.bly comprehend the automated handle of reactive EPTT with affordable compensation
3.two straightforward construction, miniaturization of products, one particular cupboard, one particular manage unit, or multi cabinet handle device it can be divided into 6 units at most, and the compensation capacitance can be large or tiny, lovely appearance, practical and fleXiHu (West EPT) Dis.ble choice, and minimal expenditure
three.three due to the team computerized switching, the uEPTTzation price of capacitor is substantial
3.4 the JCEP swap cupboard adopts the combination of microcomputer protection measurement and control and computerized switching gadget of capacitor lender, with entire defense and control perform and large EPTT diploma
three.five computerized and guide procedure, fleXiHu (West EPT) Dis.ble procedure, easy handle, risk-free and dependable.
three.6 it has RS232 or RS485 serial interaction interface, which can be linked with other checking tools in the substation to form the built-in EPTT system of the substation, which can meet the demands of a variety of operation and administration modes this sort of as unattended or considerably less attended, centralized management and so on.
3.seven it has in excess of temperature and in excess of-voltage protection alarm and inner and external fault locking purpose
3.eight substantial security overall performance, with incoming line isolation and grounding interlock, when the system is stopped, the EPT level and period line can be grounded at the same time it has very good 5 avoidance locking safety overall performance.
3.nine the items meet the needs of GB 55717-1995 quotcode for style of EPTTt capacitor unit quot, JB / T7111-1993 quothigh voltage EPTTt capacitor system quot and DL / t604-1996 quottechnical problems for ordering substantial voltage EPTTt capacitor gadget quot and other stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds and appropriate technical stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds.

four. Inspection, adjustment and examination ahead of procedure of complete set of tools
4.one pre procedure inspection
four.1.one the preparing and inspection of high voltage change cupboard just before procedure shall be in accordance with the pertinent requirements of its set up and procedure guide.
four.1.2 the inspection and set up shall meet the demands of Chapter 5 and Chapter seven. The automatic switching element shall be carried out according to the requirements of its computerized handle handbook.
4.1.3 the outgoing line finish and insulator shall be clear with no paint and hurt, and there shall be no overlooked equipment and products on the equipment.
4.one.four the bus bar, spray stage-by-action fuse, and so forth. shall be related correctly and correctly. The lead wire and indicator board shall encounter outward and shall not be reversed. The distance in between the dwell portion and the grounding portion shall be ensured. The distance between the stay elements of different phases and the primary grounding body shall be greater than the requirements of relevant stXiHu (West EPT) Dis.Hu (West EPT) Dis.rds.
4.one.five the web site need to be clear and tidy, the grounding switch must be opened, and the short-term grounding wire must be taken off.
4.1.six examine whether the environment benefit of the security relay satisfies the needs. See eight.two for the setting benefit.
4.one.7 near and lock the door to avert any person from approaching the live part.
four.1.eight examine that all interlocking locks are reputable to guarantee safe and trustworthy operation of the device.
4.two relay defense adjustment
4.two.one it is essential to guarantee that all protecting relaEPTTare intact and their motion assortment shall be constant with the drawings.
four.2.2 the in excess of-voltage protection relay is set to 1.1 occasions the rated voltage of the gadget and functions with a delay of -60 s
4.two.3 the undervoltage security relay operates at 60% of the rated voltage of the gadget
4.2.4 the above-recent relay shall not function unEPTT1.three instances of the rated current of the capacitor lender. It shall be established at 1.6 moments of the rated existing of the capacitor lender and act with a delay of .five seconds.
4.2.5 the in excess of-existing fast split security relay is set at 5 occasions the rated recent of the gadget, and the time limit is .15s.
four.two.6 the double star shaped EPT line unbalanced current safety relay is set to work for .two-.5 seconds when the breakdown time delay of some series factors in a solitary capacitor is established. The reliability coefficient and JCEPtivity coefficient are one.5 and 1.five respectively.
four.two.7 the EPT line unbalanced current rapid split security relay is established at 3-four times of the corresponding unbalanced delay defense placing value, with a time limit of .2S.
4.two.eight one star open delta zero sequence voltage protection relay is set to hold off when some sequence parts inside a solitary capacitor are broken down
2-.5 seconds. The reliability coefficient and JCEPtivity coefficient are 1.five and one.5 respectively.
4.2.9 the setting worth of zero sequence voltage swift split safety is four-8 occasions of the location worth of zero sequence voltage hold off security.
four.3 take a look at
4.3.1 relay safety motion attribute check: when no high-voltage EPTT provide is related and various fault signals are input into the secondary circuit, the microcomputer protection relay shall be able to work generally, and the high-voltage circuit breaker shall be in a position to swap typically. In orEPTTto keep away from as well a lot of switching occasions of higher voltage circuit breaker, modest bus fuse can be removed. During the examination, the secondary wiring of voltage transformer should be removed to prevent substantial voltage reverse EPTT.
4.three.2 a single minute take a look at of making use of rated voltage: affirm that the equipment and set up have the situations for voltage software, utilize the rated voltage for one moment, report the recent worth of each and every period, and notice whether the equipment has abnormal phenomena. Then lower off the EPTT offer, work in accordance to the working methods, close the grounding change, and then examine the products.
four.three.3 fault defense test for interior components of capacitor: it shall be performed right after finishing the tests in eight.three.one and 8.3.2. The variety of EPTTt capacitors in every single period and every arm is elevated and reduced in change, and the failure of internal components of capacitor and fuse fusing are EPTTlated equivalently. No matter whether the complete set of products can defend properly in case of failure is evaluated. The action price of relay security in every single fault condition is measured in the test.
four.three.four check the purpose of computerized reactive EPTT controller, the on-off performance of team capacitor switching swap and its secondary wiring. With no large-voltage EPTT source, disconnect the fuse for one in excess of-recent defense, and swap on and off the switching equipment in every capacitor cupboard by way of the handbook mode of reactive EPTT automatic controller. Then set the transformation ratio of the current transformer and the delay time of group switching. The set benefit of the transformation ratio of the existing transformer should be constant with that of the whole current transformer in the switch cupboard the placing price of the delay time must not be much less than 5 minutes. Ahead of the unit is put into procedure, other parameters of the controller are established automatically via the programmable menu of the controller.
4.three.5 if the conditions are achieved, the inrush recent and switching overvoltage tests of the total set of devices shall be executed, and the corresponding waveforms shall be recorded.
five. Operation, upkeep and overhaul
5.1 when switching the capacitor bank immediately, according to the schematic diagram, very first change on the control EPTT offer, change the transfer swap to the computerized place, and then operate the controller to EPTTr the automated switching state. When manual switching is JCEP, change the transfer switch to the handbook placement, and then switch the knobs one particular by a single to the corresponding EPT or push the corresponding buttons to EPTTr the manual control procedure.
five.2 the operator on obligation shall make a in depth report of the procedure. Within 24 hours following the begin of operation, the bus voltage and the current of each phase of the unit must be observed regularly, and the capacitor must be checked when the load is mild.
five.three it is advisable to notice the procedure of all components of the comprehensive established of tools after each and every hour. At lEPT once every single a few months, the surface of each bushing, the shell and cabinet frame of every EPT EPT shall be cleaned to avoid accidents brought on by dust, filth and combined humidity. Verify whether the EPT connection is in excellent make contact with and whether the nut is free. If any dilemma is identified, well timed take care of it to steer clear of early hurt of capacitor or equipment incident induced by partial corona discharge.
five.four in accordance to the reactive strength meter and ammeter on the higher voltage change cupboard, verify the capacity and load of the gadget, and the motion of the security relay is Okay
Notice via sign relay and indicator gentle. If the unit is in use, the relay security action output to vacation, and ahead of locating out the reason and handling it correctly, it is not allowed to force reclosing.
five.five when the transformer or EPTTt reactor is in cost, the transformer or EPTTt reactor shall be set into operation first, and then the full set of compensation system shall be put into procedure. When the transformer or EPTTt reactor is lower off, the reverse procedure shall be followed to stay away from existing resonance injury among the complete payment gadget and the system.
five.6 if the capacitor is damaged and changed with a spare portion or a new capacitor, it should be noted that the ability of the capacitor to be replaced is the exact same as that of the changed capacitor as significantly as possible, conference the demands of 7.three.2.
5.seven preventive inspection and examination for main factors of the complete set of products, these kinds of as capacitance of capacitor, series reactor and mutual inductor
Insulation resistance, oil degree, oil force, etc., must be carried out routinely in accordance to the corresponding use and servicing directions. The procedure and maintenance of high voltage swap cupboard shall be carried out in accordance to the needs of its set up and procedure manual.

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