CN2129934Y

CN2129934Y - Relay protective test device

Info

Publication number: CN2129934Y
Application number: CN 91229328
Authority: CN
Inventors: 田径
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-11-27
Filing date: 1991-11-27
Publication date: 1993-04-14
Anticipated expiration: 2001-11-27

Abstract

The utility model discloses a relay protective test device which is a comprehensive tester. The utility model is suitable for testing relay protection in substations, power plants and electric railway traction substations, for checking alternating current and direct current meters, and for drawing hexagonal graphs. The relay protective test device is characterized in that continuous phase shift of from 0 to 360 DEG can be completed by a transformer and a change-over switch, and the positive and negative phase sequence indicating lamps for a 380V input power supply and a direct current loop are also provided. The utility model mainly solves the problems of single performance, large and heavy body, more wires, poor accuracy and low efficiency existing in present electric appliance test equipment.

Description

Relay protective test device

The utility model relates to a kind of improved test device for relay protection.The input power supply is a three-phase and four-line 380V voltage, is applicable to power system transformer substation, generating plant, traction substation of electric railway relay protection test, the alternating current-direct current instrument check, and the hexagonal figure of electric substation draws test.

Existing relay-protection tester device mainly is the equipment of simple function, during use wiring more, can bring two problems like this: (1) increases test error because wiring, and precision reduces.Need connect more line during (2) owing to test, the misconnection error connection happens occasionally, so exist unsafe factor more temporarily.

Task of the present utility model is that a kind of and present different proving installation of relay-protection tester device that uses will be provided; it has only two equipment to form a cover; can carry out the verification work of relay protection test and alternating current-direct current instrument flexibly and easily; relatively has the assurance measuring accuracy with existing with quasi-instrument; improve testing efficiency, reduce the characteristics of unsafe factor.

Task of the present utility model is finished as follows, uses novel separated into two parts according to convenient and practical principle handle.First as shown in Figure 1.Power supply is by A, B, C, N input 380V and zero line; Show that by phase-sequence indicator 1XD positive phase sequence or 2XD show negative-phase sequence; Constitute phase shifter by WK1, B1, TY1, can finish 360 ° of any phase shifts, phase-shifting voltages inserts phase meter by WK2 and N, and by U1, N output, the current return of phase meter is by the terminal I ^*, I inserts phase meter by WK2; Constitute fixedly DC voltage output (48V or 110V or 220V or 600V) by WK2, B2, WK3; Can constitute adjustable direct current output (0-6A or 0-48V or 0-110V or 0-220V or 0-600V) by TY1, WK2, B2, WK3; DC voltage, current values are indicated by the direct current volt ampere meter, by+,-terminal output.Second portion as shown in Figure 2.Power supply is by U1, U2 live wire, and the N zero line is imported; Constitute an adjustable alternating voltage, current return by TY2, B3, WK4, table 3; Constitute an adjustable alternating voltage, current return by TY3, B4, WK5, table 4, when constituting survey and logical lantern test loop by NK4,5XD, table 5.

Be further described below in conjunction with the enforcement of accompanying drawing utility model:

Fig. 1 direct current, phase regulator schematic diagram

Fig. 2 alternating voltage, current regulator schematic diagram

Fig. 3 utility model shell synoptic diagram

Fig. 4 direct current, phase regulator panel arrangement synoptic diagram

Fig. 5 direct current, phase regulator backplane synoptic diagram

Fig. 6 alternating voltage, current regulator panel arrangement synoptic diagram

Fig. 7 alternating voltage, current regulator backplane synoptic diagram

One,, electrical equipment shown in Figure 1 is installed in the shell shown in Figure 3 with reference to Fig. 1.Fig. 3 shell is made by 2 millimeters thick aluminium alloy plates, and there is the window shutter of heat radiation the both sides, front and back, and the left and right sides is equipped with handle, apart from the 4 millimeters pincers in edge suitable for reading angle bar is arranged around the casing inboard suitable for reading, do panel support usefulness, loam cake and casing are locked with 4 box fasteners, case surface spray grey wrinkle finish.Numeral among Fig. 3: 1. shell case lid; 2. container body of outer cover; 3. window shutter; 4. box fastener; 5. shake hands; 6. angle bar; 7. case pin.Electrical equipment divides two-layer layout in the enclosure, transformer B1, B2, pressure regulator TY1, inductance L, current transformer BL, levels line socket CZ1, CZ2, direct current source plate, porcelain resistance R 1, R2, R3 are fixed on down on the insulcrete of 4 millimeters of bed thickness, specifically arrange with reference to Fig. 5.Fig. 5 symbolic representation: R1.R2.R3 direct-current discharge resistance; B1. phase-shifting transformer; B2. DC-isolation transformer; The gang socket of CZ1.CZ2 levels; L. DC filtering inductance; BL. little electric current input current transformer; TY1. pressure regulator.Again insulcrete is fixed on the shell inner bottom part.Panel is two-layer, internal layer is with 2 millimeters thick galvanized iron sheets, be used for fixing the element on the panel, skin is fixed with 2 millimeters thick aluminium sheets, by use table size, draws the terminal thickness outward on the panel, and the position perforate of switch and pressure regulator, drawing terminal, protective tube, switch, phase sequence pilot lamp outward, the table score is not fixed on the panel, specifically arranges with reference to Fig. 4.Distribution is pegged graft with bottom socket CZ1, CZ2 by plug CT1, CT2 and is linked to each other.Numeric character is represented among Fig. 4: 1. power switch; 2.3.4. protective tube; 5. zero line input terminal; 6.7.8.380V input terminal; 9. limit switch mutually; 10. phase meter rheotrope; 11.12. the positive negative-phase sequence pilot lamp of power supply; 13.14.15. phase meter, big electric current, little current input terminal; 16. voltage output end after the phase shift; 17.18.220V lead-out terminal; 19.20. dc output end; 21. direct current export insurance pipe; 22. direct current on-off switch; 23. earthing of casing terminal; 24.25. direct current break-make starting stopwatch terminal; WK1: phase place coarse adjustment switch; WK2: direct current, phase change-over switch; WK3: DC voltage, rheotrope; TY1: direct current, phase place fine tuning.

Adopt the electrical equipment parameter among Fig. 1: connection terminal can pass through 6A electric current, protective tube 3A, B1:390VA, 220/220V, load 2A for a long time; B2:390VA, 220/24V, load 6A, 48V load 4A, 110V load 3A, 220V load 2A, 600V load 0.5A; Commutation diode: 700V, 6A; Iron inductance L1:100 circle; The L2:200 circle; Current transformer BL:30VA, 0.1/3A; Seven on switch WK1:3 layer; WK2,6 layers 3; WK3,6 layers 5; Electrogoniometer adopts the capacitance-resistance phase-shift theory to constitute, and pilot lamp adopts neon lamp; 0.5 grade of direct current volt ampere meter; 1.0 grades of phase meters.

Two,, electrical equipment shown in Figure 2 is installed in the shell shown in Figure 3 with reference to Fig. 2.Mounting arrangements is two-layer, transformer B3, B4, and pressure regulator TY2, TY3, socket CZ3, CZ4, big electric current line splicing ear row CX1, CX2, current transformer is fixed on the bottom insulcrete, again insulcrete is fixed on the shell inner bottom part, specifically arranges with reference to Fig. 7.Symbolic representation among Fig. 7: CX1; CX2: big current terminal row; LH: current transformer; B3:B4: isolating transformer; CZ3:CZ4: levels line inserting terminal socket; TY2:TY3: pressure regulator.Top surface plate structure, panel and element fixing means the same are described, specifically arrange with reference to Fig. 6.Numeric character is represented among Fig. 6: 1. power switch; 2.3. protective tube; 4. zero line input terminal; 5.6.380V input terminal; 7.8. I road voltage, current output terminal; 9. power light; 10. logical lamp; 11.12.13. stopwatch input terminal; 14.15. II road voltage, current output terminal; 16. I, II road starting stopwatch switch; 17. stopwatch, logical lamp switch; 18. II road voltage, current switching switch; 19. I road voltage, current switching switch; 20. earthing of casing terminal; 21. stopwatch single and double-pulse switch; 22. stopwatch reset button; WK4: I road voltage, rheotrope; WK5: II road voltage, rheotrope; TY2: I road voltage, Current Regulation; TY3: II road voltage, Current Regulation.

Electrical equipment parameter among Fig. 2: voltage terminal is for a long time by electric current 6A; Current terminal is for a long time by electric current 40A; Toggle switch is for a long time by electric current 3A; B3 maximum output voltage 600V, maximum output current 30A; B4 maximum output voltage 250V, maximum output current 60A; TY2:0.5KVA; TY3:0.7KVA; 3 on switch WK4:6 layer, two-layer and usefulness; 3 on WK5:6 layer, two-layer and usefulness; Table 3, table 4 are 0.5 grade and exchange volt ampere meter; Stopwatch 5: the markers accuracy is 5 * 10 ^-5

Manipulate method: according to the test device for relay protection of the utility model manufacturing; be divided into direct current phase regulator and alternating voltage, two independent sectors of current regulator; be contained in respectively in the same shell of two sizes; can separately or merge use according to measurand; the direct current phase regulator, the input power supply is a three-phase and four-line 380V voltage, but 360 ° of outputs of phase shift; voltage 220V after the phase shift, and export

direct current

48V or 110V or 220V or 600V simultaneously.The input power supply was 220V when alternating voltage, current regulator used separately, and U1, U2 are live wire, and N is a zero line, can export two alternating voltages or two alternating currents simultaneously, or an alternating voltage one alternating current.Reference time measurement: 0.001s-99.999s, stopwatch have inside and outside the startup and single and double-pulse input conversion.Direct current, phase regulator and alternating voltage, current regulator are merged use, can measure complicated measurand (as impedance relay, electric railway protection for feed line etc.).Merge wiring when using, power supply input three-phase and four-line 380V couples together two casees U1, U2, N with lead, U1 is the voltage through phase shift, U2 is a supply voltage, according to the measurand technical requirement, freely selects each output quantity by switch when two casees merging are used.Output quantity selection principle is that two voltage outputs: I road (WK4), II road (WK5) voltage, rheotrope all are placed on voltage gear V position.Double-current output: I road, II road voltage, rheotrope all are placed on current gear I position.A voltage, an electric current output: I road voltage, rheotrope are placed on voltage gear V position, and II road voltage, rheotrope are placed on current gear I position.I road voltage or electric current are by V 1 I 1 ^*, the output of V 1 I 1, size is regulated by TY2.II road voltage or electric current are by V 2 I 2 ^*, the output of V 2 I 2, size is regulated by TY3.When stopwatch was started by the outside, input signal was that 1,3 terminals are connected the starting stopwatch, 2,3 terminals connection stopping stopwatch.Stopwatch is placed on position, I road to NK5 during by internal triggering, by NK2 starting stopwatch, NK5 is placed on position, II road, and by NK3 starting stopwatch, 2,3 terminals are connected and stopped stopwatch.NK4 is placed on logical lamp position, and 2,3 terminals are connected, and logical lamp 5XD lights, and 2,3 terminals disconnect, and logical lamp extinguishes.

Claims

1, a kind of test device for relay protection is characterized in that having continuous adjustable direct supply, and phase place is adjusted instrument and AC power, timing, led to two parts of lamp instrument; Continuous adjustable direct supply, phase place are adjusted instrument and are made of phase shifter, phase-sequence indicator, phase meter and direct supply; Input termination three power supplys of phaser input end and phase-sequence indicator, the output termination phase meter of phase shifter, direct supply is made of transformer, current transformer, filtering circuit, output terminal is connected to volt ampere meter, the input a certain phase line of termination and ground wire, in order to produce and measure each grade voltage, adopted 6 cuttves, 5 throw switches,, be provided with the switch of input end conversion at phase line or phase shifter output terminal for making supply voltage continuously or be interrupted adjustablely; AC power, timing, logical lamp instrument is by two variable AC power circuit, timing circuit and logical circuit for lamp constitute, two variable AC power circuit constitute by pressure regulator and the volt ampere meter that is connected in output terminal, the input end of two circuit is connected on respectively on the different phase line and zero line, in order to produce and to measure different electric current and voltages, be provided with three cuttves, three throw switches, timing circuit is by stopwatch and switch NK5, NK2, the docking point of NK3 constitutes, logical lantern test circuit is made of pilot lamp and resistance, the input end of back two circuit all is connected on phase line and the zero line, and by a single-pole double-throw switch (SPDT) conversion timing or logical circuit for lamp energized.

2, device according to claim 1 is characterized in that, phase shifter is made of phase-shifting transformer, pressure regulator, three cuttves, seven throw switches and two cuttves, three throw switches; Power supply A is mutually respectively at the stationary contact 3,4 of switch WK1-1, the stationary contact 1,6,7 of WK1-2, phase line B meets 3,4 of WK1-1 respectively, 6,7 of WK1-2, WK2-3 3 on, the C phase line meets WK1-11 respectively, 2,7, WK1-2 4,5 on; The elementary moving contact and zero that meets WK1-1 of phase-shifting transformer, secondary out-phase point connects each stationary contact of WK1-3; The moving contact of WK1-3 connects the stationary contact 1 of WK2-2, the 3 connecting to neutral lines of WK2-2, and the moving contact of WK1-2 connects the stationary contact 1 of WK2-2, and the moving contact of WK2-2 and WK2-3 is connected on the two-end-point of pressure regulator, and the centre tap of pressure regulator is exactly the output terminal of phase shifter.