Embodiment
Understand and embodiment of the present invention for the ease of those of ordinary skills, the present invention is made further detailed description below in conjunction with accompanying drawing and embodiment.All embodiment abide by above-mentioned method fully and operate, and each embodiment only puts down in writing crucial technical data.
Be illustrated in figure 1 as the structural representation of this load cabinet system; This entire system is made up of box-type substation container 1 and resistance sense integral type load container 2; Connect through isolating switch between box-type substation container 1 and the resistance sense integral type load container 2; Isolating switch is divided into first isolating switch 6 and second isolating switch 7, and first isolating switch 6 and second isolating switch 7 are high-pressure vacuum breaker.
Box-type substation container 1 is an integral body; Inside is made up of high-tension switch cabinet 11 and two high-tension transformers 12; High-tension switch cabinet 11 connects two high-tension transformers 12 respectively; And high-tension switch cabinet 11 outside second genset 9 that connect be the 6600V group of motors, and two high-tension transformers 12 connect first isolating switch 6 and second isolating switch 7 respectively.
Resistance sense integral type load container 2 is formed by connecting through the parallel operation line in two generator measurement appearance 13; Be that 485 parallel operation lines connect between two generator measurement appearance 13; What present embodiment adopted is 21000KW resistance, 1575KVA sense generator special measurement appearance; Have manual, automatic and three kinds of control modes of intelligence, and be connected with second isolating switch 7 with first isolating switch 6 respectively.
Resistance sense integral type load container 2 also external notebook computers 3 and remote controllers 4; Be connected through 100M Long-distance Control cable between the remote controllers 4; Be connected through order wire between the notebook computer 3, notebook computer 3 is connected with printer 5, is used for printing reports.
First isolating switch 6 and second isolating switch 7 are except being connected box-type substation container 1 and resistance sense integral type load container 2; Also respectively through external first genset 8 of power cable and the 3rd genset 10, these two genset are the 440V genset.
The performance index of above-mentioned equipment component is following:
One, vacuum circuit breaker:
Rated voltage 7.2,12KV
Specified 1min industrial frequency withstand voltage 49KV
The withstand voltage 87KV of lightning impulse
Rated frequency 50-60HZ
Main bus-bar rated current 630A
Branch bar rated current 630A
4 seconds heat-stable current (effective value) 25,31.5,40,50 kA
Specified dynamic current (peak value) 40,50,63,80,100 kA,
Degree of protection shell IP4X, between compartment, the breaker chamber door is opened for IP2X
Insulation resistance (1000V) megohmmeter: >=1M Ω
Two, the high-tension switch cabinet major parameter requires (with the supporting use of high-tension transformer)
Adopt the AC metal closed armored withdraw type switchgear of KYN28-12 type
Basic parameter: 12kV 630A
Performance specification
⑴ the shell of, cabinet and the dividing plate of each functional unit adopt the aluminizing zine plate to assemble.The shell protection grade of switchgear is higher to be IP4X.Door-plate all adopts electrostatic plastic spraying to make its surperficial impact resistance, and is corrosion-resistant, good looking appearance.
⑵, have built on stilts turnover line, cable turnover line and about the function of contact.
⑶ the Installation and Debugging of, equipment and maintenance can be carried out in the front, so can lean on the wall installation or form dual arrangement back-to-back.Has the advantage of saving floor area, reducing gross investment.
, owing to adopted the middle form, the position, cable vault increases greatly, so equipment can connect multiway cable.
⑸, handcart be indoor to have installed specific guide rail, supplies circuit breaker cart to slide and work interior.The static contact front end is equipped with valve mechanism, thereby has ensured operating personnel and maintenance personal's safety.
⑹ three holes of, bus-bar room sidewall are used to install the bus insulation sleeve pipe, and the bus between the equipment is separated, and the accident that can prevent enlarges.
⑺ in, the cable vault current transformer, grounding switch, lightning arrester and cable can be installed, and unloaded metal shrouding that cracks in its bottom preparation or magnetic conduction shrouding not, guarantee on-the-spot easy construction.
⑻ install all kinds of Quadratic Finite Element devices or combine the guarantor except that being used to, metering house, also can increase little bus-bar room at the top, metering house according to customer requirements, can lay ten five the tunnel and control little bus.
⑼, above handcart chamber, bus-bar room, cable vault, be provided with pressure relief device.In when, internal fault taking place in isolating switch or bus, the cable vault producing electric arc when; Along with air pressure inside rises, the pressure of top arrangement discharges sheet metal will be opened automatically, relief pressure and drainage gas; To guarantee the safety of operating personnel and equipment, prevent that fault from enlarging.
⑽ what, circuit breaker cart and cabinet adopted is mid-pull-out type, and withdrawing from, transport, keeping in repair of operation, observation and circuit breaker cart has more hommization.And the same size handcart has interchangeability.Isolating switch moves in equipment and adopts the leading screw propulsive mechanism, makes isolating switch very easily reliable when turnover.
⑾, prevent the maloperation interlocking device
Safe and reliable interlocking device is housed in the switchgear, satisfies five anti-requirements fully.
Tell-tale button or KK type switch are housed, to prevent that mistake from closing, mistake is divided isolating switch on metering house's door.
Circuit breaker cart is when test or working position, and isolating switch just can close branch, and after the combined floodgate of isolating switch, isolating switch can't move, and has prevented that on-load from drawing mistake to close insulating contact by mistake.
Isolating switch and grounding switch mechanism interlocking, have only when circuit breaker cart in testing position or after withdrawing from cabinet, the grounding switch while handcart that could close a floodgate can not get into the working position.During non-testing position, grounding switch can not close a floodgate handcart, has realized like this preventing closing isolating switch before charged splice grafting ground switch and grounding switch from not dividing in equipment.
Isolating switch is in the working position, and Xiamen and back door can't be opened, and have prevented mistakenly entering charged chamber.
Circuit breaker cart is being tested or the working position really, and does not control voltage, only enable manual separating brake (can not establish this interlocking according to customer requirement).
Handcart is in the working position, and secondary plug is locked and can not pulls out.
Between each switchgear electric interlock can be installed.The switchgear with grounding switch can not install electromagnetic lock additional, prevents mistakenly entering charged chamber.
Design for 3000 meters by sea level elevation.
When manipulating, following explanation is arranged:
One native system has two kinds of control modes: this machine, long-range, three kinds of control modes of intelligence
1. this machine control: the control panel through load box directly carries out tests such as power adds, off-load, and checks parameter;
2. Long-distance Control: carry out tests such as power adds, off-load through the Long-distance Control case;
3. Based Intelligent Control: the PC monitoring, Long-distance Control is the important control mode of this genset intelligent test system.
Two load cabinet methods of operating
1, connects ground protection: casing is had the terminal reliable ground that ground connection indicates, to guarantee personal safety.
2, open air outlet: all upper cover plates of cabinet are opened and fixed.
3, inspection panel switch: whether all power setting buttons of inspection load cabinet and Long-distance Control case panel
Be in closed condition.
4, connect power cable: open the wiring door, and use hook that door is fixed, the phase three-wire three power cable of the Devices to test order according to A, B, C is connected to respectively on the line bank of every road load, wiring must be firm.When working, need load two loops are cashier's office in a shop all connected power cable, after the cable wiring finishes this door is closed like parallel operation.
5, connect working power: connect or external power supply in selecting as required, adopt external power supply like need, please
The working power line is connected in " working power " air plug; And " working power switching " switch on the load cabinet control panel pulled to the relevant position; Attention must guarantee that practical power conforms to the position of the switch, and forbids to operate this switch in the course of the work, otherwise with burning apparatus.
6, connect working power: open " working power " switch on the load cabinet control panel 1, the working power pilot lamp is bright.
7, select control mode: please confirm to adopt which kind of control mode earlier before loading, " control model " switch on the load cabinet control panel is pulled the relevant position.This switch of quiescing in the loading procedure
(1) this machine: select " this machine " control mode, promptly control through load control panel cashier's office in a shop, Long-distance Control case and host computer all can not be controlled, and host computer is image data in real time.
(2) long-range: select " long-range " control mode, promptly control through the control panel on the Long-distance Control case, load cabinet itself all can not be controlled with host computer, and host computer is image data in real time.During Long-distance Control, need Long-distance Control case and load equipment are connected through the Long-distance Control line, and guarantee the dry no short circuit risk of external control aviation plug, can control on the Long-distance Control case and add off-load this moment.
(3) intelligence: select " intelligence " control mode, promptly control and image data through host computer,
Load cabinet itself all can not be controlled with the Long-distance Control case.
During Based Intelligent Control, need notebook computer and load equipment are connected through the RS485 order wire, make an experiment with supporting upper computer software control load.
8, select unit/parallel operation pattern: please confirm to adopt which kind of mode of operation earlier before loading, " fan power/mode of operation " switch on the load cabinet control panel is pulled the relevant position.Blower fan begins to rotate.
Please don't operate this switch in the loading procedure!
(1) unit starts: select " unit startups " mode of operation, the fan starting in loop 1 and loop 2, stop to load with power, unloading and on the control panel in two loops, operate respectively.
(2) parallel operation starts: select " parallel operation startups " mode of operation, the fan starting in loop 1 and loop 2, stop and power loads, unloads all control operations on 1 control panel of loop.
(3) stop: when load quit work, operating switch was pulled stop position, and this moment, blower fan stopped operating.
9, begin band and carry test:
(1) on the control panel of load cabinet or Long-distance Control case, presets required loading performance number.
(2) pre-setting method: the power setting button that will load is pressed, and button is pressed representative and preset connection
Button is upspring to represent and is preset disconnection.
Example: load resistive 170KW like need, during perceptual 155KVA, then need resistive 100KW, 50KW, 20KW, perceptual 100KVA, 50KVA, 5KVA button are pressed, i.e. success is preset in expression.
(3) after presetting successfully, " adding off-load control " button (pilot lamp is bright) of pressing on the control panel of load cabinet or Long-distance Control case can load according to prevalue, and the power pilot lamp that presets is lighted.
(4) in loading procedure, change loaded value as needing, preset the performance number that needs change earlier, pressing " adding off-load controls " button again can load according to the performance number after the change.
Example: if in the course of the work, need the 170KW that will load to be increased to 200KW, the 20KW button that need will load is pressed and is upspring, and one grade of 50KW button is pressed again, i.e. success is reinitialized in expression.
(5) resistive load can be transferred the files and can be transferred the files and can finely tune performance number with inductive load; Loading method: at first pull power change switch to the performance number that needs fine setting; Pressing " adding off-load control " button again can load according to the performance number of fine setting, after hours switch is rotated to zero-span.
(6) in the course of work, can be through 8961F1 on the load cabinet control panel or the various electrical quantitys of upper computer software real time inspection.
10, impact, the prominent experimental implementation of unloading:
(1) " isolating switch logical " on load cabinet or the Long-distance Control case control panel pressed, the 8961F1 data presentation is normal, will be resistive and the perceptual power switch, treat that fan operation is normal after, add again/off-load tests.
(2) according to test request, preset required performance number, pre-setting method is the same, and " adding off-load control " button is not pressed.
(3) 8961F1 carries out dynamic parametric test, if carry out pressing " test " key behind impact test and Selection 8961F1 " impact " key, accomplishes behind the test duration 12S; Unload test if dash forward, press " adding off-load control " button, treat that machine turns round loading normally later on by pressing " test " key behind 8961F1 " prominent unloading " key, accomplishes behind the test duration 12S.Can disappear after the shutdown of the last data of attention: 8961F1, please test accomplish the back do not have outage before with PC on the software of correspondence read test data, and preservation.
(4) PC is long-range does sudden unloading process test, and control mode need be in this seat in the plane puts, and utilizes upper computer software Long-distance Control sudden unloading process, clicks the impact experiment, prominently unloads button and test, and can call the performance graph chart data of surveying instrument together after the 15S test finishes.Comprise " impact voltage curve ", " impact frequency curve ", " impact current curve ", " the prominent voltage curve that unloads ", " the prominent frequency curve that unloads ", " the prominent current curve that unloads ".
11, shut down:
Each power setting button that (1) will load is successively earlier pressed and is upspring.
(2) press and upspring by " adding off-load control " button on load cabinet or the Long-distance Control case control panel again
(pilot lamp goes out) can unload.
(3) blower fan is still in operation, dissipates in about five minutes in the cabinet behind the waste heat, again with " fan power/work
Pattern " switch pulls to " stopping " position, and blower fan stops operating.
(4) " working power " switch on the switching off load cabinet control panel 1, the working power pilot lamp goes out,
8961F1 stops video data.
(5) remove various lines, roof door and inlet wire door are closed respectively lock.
12, the use of blower fan, temperature, over-voltage protecting function:
Under the normal condition; Three protection switches should be in downward position (representes downwards to cut off when unusual and loads the protection machine; Upwards defencive function is closed in expression); So that fan trouble appears, the smooth temperature of ventilating is too high, in time stop loading work when load voltage is too high (corresponding alarm indicator bright and with chimes of doom), guarantees the safety of genset and load cabinet, avoids the generation of accident.This function all sets when dispatching from the factory, please don't arbitrarily change.
When breaking down, should at first ascertain the reason and get rid of fault to guarantee the safe handling of equipment.In maintenance process, maybe when alarm when the wrong report situation occurring, can corresponding CS be got to the temporary transient de-preservation function in position upwards, pending fault should in time be got to downward position with protection switch after solving.
Adopt native system, can carry out following parameter testing:
1, test parameter: can measure basic functions such as generator stable state three-phase voltage, electric current, active power, reactive power, applied power, power factor, frequency, working time.
2, frequency analysis: harmonic wave forms, data, histogram are provided, electric current and voltage 2~50 order harmonic components and total harmonic distortion.
3, the test of adjusting: 100 seconds setting times, can catch voltage, frequency setting maximal value, minimum value, can calculate that relative voltage, frequency setting rise, decline scope and regulation.
4, fluctuation test: 60 seconds fluctuation time, can catch voltage, frequency jitter maximal value, minimum value, can calculate steady frequency band, steady state voltage deviation, voltage modulated, stability bandwidth.
5, impact test: 12 seconds impact time, can catch transient voltage, frequency minima, current maxima and release time, can calculate impact transient voltage deviation, instantaneous frequency is poor.40 μ S sampling times.
6, prominently unload test: 12 seconds prominent unloading the time, can catch transient voltage, frequency maximal value, current minimum and release time, can calculate impact transient voltage deviation, instantaneous frequency is poor.40 μ S sampling times.
7, record wave energy: 5 kinds of mode record voltage real-time waveforms, 4~280 seconds writing times.Can carry out the accurate sampling of 128 points to each cycle at most.
8, control automatically: native system has automatic value-added tax function; Only need import the correlation parameter of tested genset during test on computers; System will accomplish the loading test (stepping time can arbitrarily be set) from 0%, 25%, 50%, 75%, 100%, 110%, 100%, 75%, 50%, 25%, 0% in strict accordance with the regulation of GB automatically; When breaking down in the stepping process, can suspend test, fault is got rid of the back program still can continue to accomplish dependence test, and test process is unaffected.And the variation, release time and the curve that parameters such as the V of genset, I, KW, Hz in loading, occur store with the mode of form and figure and show.
9, segmentation control: optimize sectional type power investing method, be provided with conveniently, cover all performance numbers.
10, testing software: be used with computer software, generate various charts, curve and examining report automatically.Standard operation is authoritative strong.Data content is abundant, and the form applicability is strong.
11, data query: can carry out the inquiry of test result in the past according to production code member.
12, printed report: report below can showing or print:
A, examining report b, unit steady-state behaviour test report c, detection data
13, print plot: can show or print following figure
A, real-time display voltage, electric current, frequency, powertrace b, voltage harmonic curve
C, voltage harmonic histogram d, current harmonics curve e, current harmonics histogram
F, impact voltage curve g, impact current curve h, impact frequency curve
I, anticlimax voltage curve j, anticlimax current curve k, anticlimax frequency curve
L, record ripple curve map m, voltage curve n, current curve diagram
O, power p, frequency curve chart q, power factor curve figure
14, load deixis: the every gear switch on the control panel all is provided with corresponding pilot lamp, and the user is come into plain view to the duty of equipment.No matter be manually control on control panel, still be Long-distance Control on control desk, or carry out prestowage automatically through host computer, the gear pilot lamp of loading all can be lighted.Make things convenient for the user can both in time grasp the load condition of load in each position, effectively reduce the probability of maloperation.
15, ipc monitor function: host computer has real-time monitoring and control, can preserve parameters in real time, no matter through which kind of mode load, all can collect whole dynamic parameters and static data, and generate various curves, or directly print.
16, parallel operation function: system's may command single loop load or multiloop load load test, when the multiloop parallel operation loads, both can show and write down the parameter in each loop, also can show and write down the total parameter after the parallel operation.
17, steady state data prompting: system can enumerate out the maximal value and the minimum value of all parameters in the steady state data automatically, makes things convenient for the user that parameter is compared.
18, load affirmation: system has the loading and unloading secondary and confirms function, the hidden danger that can effectively avoid user misoperation to bring.
19, this machine/long-distance intelligent interlocking: load cabinet control panel is provided with manual switch, can carry out manual interlocking, prevents that repetitive operation from bringing infringement to equipment.
20, data are preserved at interval: steady state data minimum resolving time is 1S, and transient data minimum resolving time is 40US.
21, control mode
A, local control:
Manually: through manual control panel, the user can accomplish desired all tests of native system, all interconnection switches of ability segmentation, and CS is accomplished all functions test, and through computer recording related parameter is arranged, and generates form.
Automatically: can accomplish the test of native system all functions through local computer, and record related parameter generation form.
B, Long-distance Control:
Manually: can accomplish desired all tests of native system through 100 meters outer remote manual controllers, all interconnection switches of ability segmentation, CS is accomplished all functions test, and can be carried out record to data through computing machine, and generates form.
Automatically: accomplish the test of native system all functions through 100 meters outer notes instincts, and record related parameter, generate form.
22, defencive function: have temperature detection protection and blower fan and detect kinds of protect functions such as defencive function, cut off load immediately if any abnormal host, protection genset and load equipment.
23, intelligentized design: realize intelligent control, the various parameters of automatically testing genset comprise dynamic parameter.The detection means of science is provided for the high-power generator group.
This system can accurately test the load capacity and the electric index of all kinds of marine generator groups; Form by input transformation, observing and controlling part and load cabinet three parts; Can be used with computing machine and realize intellectuality; Automatically accomplish special project test, generate chart, curve and examining report simultaneously, the detection means of science is provided for the high-power generator group equipment all electric parameters of genset and dynamic parameter.
The above; Only be in order to practical implementation case of the present invention to be described; But be not in order to limit practical range of the present invention; Such as those skilled in the art must be covered by the scope of claim of the present invention not breaking away from all equivalence changes of being accomplished under indicated spirit of the present invention and the principle or modifying.