CN105654821A - Fault simulation apparatus for electrical control system of transformer equipment - Google Patents
Fault simulation apparatus for electrical control system of transformer equipment Download PDFInfo
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- CN105654821A CN105654821A CN201410682755.4A CN201410682755A CN105654821A CN 105654821 A CN105654821 A CN 105654821A CN 201410682755 A CN201410682755 A CN 201410682755A CN 105654821 A CN105654821 A CN 105654821A
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Abstract
The invention provides a fault simulation apparatus for an electrical control system of transformer equipment. The fault simulation apparatus is suitable for a training system for realizing fault simulation by using a circuit breaker or a disconnecting switch. The fault simulation apparatus comprises a touch control unit, a PLC control unit, and a relay group. The touch control unit is provided with a monitoring interface for displaying and controlling a fault simulation circuit and includes a plurality of virtual buttons; and each virtual button corresponds to an instruction. The PLC control unit receives an instruction sent by the touch control unit. The relay group is connected with the output terminal of the PLC control unit; and leads of a secondary control loop of the circuit breaker or the disconnecting switch are connected with a plurality of normally-closed contacts of the relay group correspondingly. The PLC control unit is used for controlling turning on/off of the normally-closed contacts and recording on/off states of the normally-closed contacts. The provided fault simulation apparatus has the following advantages: repeated dismounting of electrical elements is avoided; the fault concealing performance is good; no new fault is caused during fault elimination; the damage of the wiring process of the system is prevented; and fault point setting is not limited by mounting positions of electrical elements.
Description
Technical field
The present invention relates to technical field of electric control, it is specifically related to a kind of converting equipment electrical control system fault simulator.
Background technology
For many years, in training practice process, in order to the phenomenon of the failure demonstrated or reproduce in converting equipment electrical control system, mostly adopt in the industry traditional fault simulation method to set up, namely in mimic channel, wire and terminal are isolated by the connection terminal place insulating material of element, and then realize the simulation of Controlling System fault. There is the drawback being difficult to overcome in the method, such as: element is repeatedly dismantled and very easily damaged; Fault is disguised poor, and reliability is low; Induction is intuitively searched, is ignored failure reason analysis; Very easily form new fault during malfunction elimination, reduce training efficiency; The Wiring technique of the wire meeting breaking plant entirety through repeatedly dismantling, reassemble; The setting of trouble spot limits by component installation location; Training arranges and fixes a breakdown and there is dangerous operation factor etc.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of converting equipment electrical control system fault simulator, it is applicable to use isolator or isolating switch to realize the training system of fault simulation, tradition drawback can be overcome and enhancement training effect, gear to actual circumstances scene, and it is convenient to student's operation, portable good, teacher is easy to maintenance.
In order to realize above-mentioned purpose, the technical scheme that the present invention takes is:
A kind of converting equipment electrical control system fault simulator, is applicable to use isolating switch or isolator to realize the training system of fault simulation, comprising:
One touch control unit, has the monitoring interface showing the secondary control loop of described isolating switch or isolator, comprises some virtual buttons, the corresponding instruction respectively of each virtual button;
Receive a PLC control unit of the instruction that described touch control unit sends;
The rly. group being connected with the output terminal of described PLC control unit;
The connection corresponding to some normally closed contacts of rly. group of the wire of the secondary control loop of described isolating switch or isolator;
Described PLC control unit is in order to control the opening and closing of normally closed contact and records the open and-shut mode of normally closed contact.
In one embodiment of this invention, described touch control unit is a touch-screen.
In one embodiment of this invention, described touch-screen sends signal by pc-ppi communication modes to PLC control unit.
In one embodiment of this invention, described monitoring interface is made by kingview.
In one embodiment of this invention, described PLC control unit comprises a PLC master station and some PLC from station, and PLC master station and PLC transmit signal by rs485 communication modes between station.
In one embodiment of this invention, described converting equipment electrical control system fault simulator also comprises a switch power supply, in order to power to rly. group.
By taking such scheme, the present invention has following advantage and positively effect: have the multiple functions such as training and learning, theoretical validation, actually operating, examination examination, its use safety, simple operation. Specifically, the converting equipment electrical control system fault simulator of the present invention has: electrical element, without the need to repeatedly dismantling, reduces loss; Fault is disguised strong, reliability height; Trainer can not be induced intuitively to search, supervise it fault cause to be analyzed; New fault can not be formed, it is to increase training efficiency during malfunction elimination; The Wiring technique of system entirety can not be destroyed; The setting of trouble spot is not by by advantages such as electric component installation location restrictions. Electrician can be met and examine the converting equipment practical training project needs in qualification, also can be applicable to power supply bureau in countryside and the daily technology training of power distribution rush-repair care workers simultaneously. This device is applicable to each work verification of professional technical ability department, power supply system grass-roots unit, training on electric power department, college, technical school, vocational school.
Accompanying drawing explanation
Fig. 1 is the module composition schematic diagram of converting equipment electrical control system fault simulator in the embodiment of the present invention.
Fig. 2 is the circuit diagram of the secondary control loop of LW30-72.5T type isolating switch in the embodiment of the present invention.
Fig. 3 is the communication connection diagram of converting equipment electrical control system fault simulator in the embodiment of the present invention.
Contact link position in the virtual button corresponding lead of description of reference numerals: P1-P15; CJX-anti-trip relay; JS-electromagnetism counter; The little pilot switch of DT-; DL-pilot switch; TQ-switching winding; HQ-combined floodgate coil; M-energy storage motor; 1ZJ, 2ZJ-intermediate relay; HK-transfer lever; SA-operating switch; ZK-auto-switch; CK-travel switch; KM-contactor; MTK-density controller.
Embodiment
For making the above-mentioned feature and advantage of the present invention become apparent, special embodiment below, and coordinate institute's accompanying drawing to be described in detail below.
First, the function module of the present invention being formed, communication modes and circuit formation explain as follows one by one:
Function module and communication modes:
Function module composition schematic diagram as shown in Figure 1, the converting equipment electrical control system fault simulator of the present invention, comprising: as the touch-screen of touch control unit, PLC control unit, rly. group and switch power supply, in order to control isolating switch or isolator. It should be noted that, only doing the signal of function module in figure, in fact, rly. group can't control isolating switch and isolator with control, when realizing fault simulation with isolating switch, rly. group just controls isolating switch, and when realizing fault simulation with isolator, rly. group just controls isolator, therefore, diagram is interpreted as, and can control isolating switch and can control again isolator, but is not defined as and is connected with isolator with rly. group simultaneously.
Corresponding fault contact in the secondary control loop of rly. group connecting breaker or isolator, in order to disconnect the wire of secondary control loop.
The picture of touch-screen and monitoring interface, made by kingview, and it, sends instructions to PLC control unit by pc-ppi communication modes as upper computer. The situation of the corresponding a kind of fault simulation of every bar instruction.
PLC control unit adopts siemens cpu226cn, the instruction signal from touch-screen is received by pc-ppi communication modes, and then the cut-offfing of relay group or isolator group, while the wire of the secondary control loop of relay group or isolator cut-offs, produce a logic signal, in order to record the open and-shut mode of rly. group.
In addition, the equipment identical in order to the fairness multiple stage in examining in technical ability has identical action at one time, as shown in Figure 3, PLC control unit comprise main website PLC and multiple from station PLC (the present embodiment is three, this is not restricted by the present invention), main website PLC by rs485 communication modes, main website PLC internal logic signal, namely the corresponding actions state of rly. group is issued from station PLC so that it is action is all identical. Thus, the identical multiple rly. group of model or isolator group can be controlled by a touch-screen, facilitate the operation of totur. Only need to add 485 communication lines at main website PLC and between the PLC of station, a touch-screen can be realized and control multiple fault simulation circuit, and then realize multiple stage fault simulation equipment fault simulation is set simultaneously. The wire of isolating switch or the secondary control loop of isolator is connected the normally closed contact of rly. group, then by the opening and closing of PLC control unit relay group, different faults can be simulated.
Switch power supply is in order to power to rly. group.
Circuit forms:
Fig. 2 is the circuit diagram of the secondary control loop of the LW30-72.5T type isolating switch realizing fault simulation, comprises control loop and energy storage loop. Control loop comprises closing circuit, counting loop, anti-jump loop, sub-gate circuit, subatmospheric locked loop and low pressure alarming loop; Energy storage loop comprises motor energy storage loop and energy storage control loop. As mentioned before, cut-offfing of the signal relay group that PLC control unit is provided from touch-screen by pc-ppi communication acceptance, the respective wire of rly. group and then disconnection two control loops, that is, divide-shut brake button SA, distant place switch and power switch on the spot in operation LW30-72.5T type isolating switch can be simulated by touch-screen. And the relay auxiliary contact of auxiliary contacts of circuit breaker, travel switch secondary contact, anti-trip relay secondary contact, energy storage motor secondary contact, subatmospheric locked loop, the action situation of subatmospheric warning secondary contact can be watched by the monitoring interface of touch-screen in operation, contribute to trainer more clearly to understand its principle; Contact link position P1-P15 in virtual button corresponding lead can be controlled by the monitoring interface of touch-screen is denoted as the virtual button of P1-P15, and then arrange arbitrarily can not close a floodgate, can not divide lock, can not divide-shut brake, energy storage failure, signal loop can not show, closes a floodgate can not self-locking, divide the lock can not the simulation of the fault such as self-locking, after fault verification completes, according to circuit breaker failure phenomenon training operator to the method for the analysis of fault, judgement and eliminating.
Lower mask body introduces the circuit composition of the secondary control loop of LW30-72.5T type isolating switch:
Anti-trip relay CJX, with to prevent fail to return (the non-release handle of such as operator in time because of the combined floodgate contact of trip switch or automatic gear, automatic gear combined floodgate contact adhesion) and just close a floodgate on fault circuit and equipment, cause isolating switch to suit phenomenon continuously.The phenomenon preventing auxiliary contact adjustment improper (conjugating slow) of the isolating switch because of tripping operation from causing the first current interruption of protection exit contact and to burn.
Density controller MTK, SF6(sulfur fluoride) density controller, for monitoring SF6SF in high-voltage electrical equipment air chamber6Gas density; And when gas leakage occurs in air chamber, send tonifying Qi, locking signal, to ensure the safe operation of equipment. Completing test pressure and temperature compensation function by two C type spring tubes, a spring tube is for measuring detected SF6The pressure of gas, another spring tube, is filled with the SF of certain pressure when 20 DEG C6Gas, is formed and compensates air chamber, and when temperature variation causes pressure alteration, two spring tubes expand (or contraction) simultaneously so that it is the incremental deformation of generation is cancelled out each other, and density controller indicator value is constant. Only as the SF of main gas tank6During gas leakage, detector tube pressure reduces, and density indicator value reduces, and electric contact adhesive, sends warning, locking signal.
The principle of intermediate relay 1ZJ, 2ZJ is the same with alternating current contactor, is all made up of secured core, dynamic iron core, spring, movable contact, rest contact, coil, connection terminal box shell. Coil electricity, the action adhesive under electromagnetic force effect of dynamic iron core drives movable contact action, makes normally closed contact separately, and normally opened contact closes; Coil blackout, dynamic iron core drives movable contact to reset under the action of the spring.
Other auxiliary and controlling elementss, it is well-known that principle of work such as electromagnetism counter JS, little pilot switch DT, pilot switch DL, switching winding TQ, combined floodgate coil HQ, energy storage motor M, transfer lever HK, operating switch SA, auto-switch ZK, travel switch CK and contactor KM etc. should be those skilled in the art institute, does not repeat them here.
When specifically arranging fault simulation, on the touchscreen virtual by turning round in P1-P15 corresponding diagram 2 contact link position P1-P15 in wire, i.e. trouble spot, can arrange arbitrarily fault quickly on the touchscreen by virtual button. As long as clicking wherein any one virtual button, place, the trouble spot wire of its correspondence will disconnect. It is as follows that fault embodiment is specifically set:
Embodiment 1:
As arrange can not energy storage fault, only need to click P10 on the touchscreen, button becomes red by blueness, and the corresponding failure point of the contact link position P10 on the wire in energy storage loop can become a red fork and show, and has fault with text prompt energy storage loop. Virtual button P10 and the M virtual rly. of series of PLC inside on touch-screen are associated, when pressing virtual button P10, the corresponding virtual rly. of PLC inside is put 1, the output point adhesive of its correspondence is controlled by the logical calculated of PLC inside, controlling the rly. in energy storage loop in actuating switch power supply and rly. group, rly. adhesive disconnects and is connected on its normally closed contact energy storage loop. Student, according to the fault of isolating switch, uses corresponding survey instrument, finds out the position of trouble spot and gets rid of.
Embodiment 2:
Can not Closing fault as arranged isolating switch, at the normally closed contact of closing circuit series relay group, then it is associated by the internal virtual rly. of virtual button P1 and PLC on touch-screen, the virtual button P1 clicked on touch-screen carrys out control PLC internal virtual operation of relay, Logic judgment control PLC according to PLC internal relay exports, carry out the action of relay group, disconnect closing circuit.
The set-up mode of other trouble spot with can not energy storage fault and can not Closing fault similar.Those skilled in the art, after learning above-mentioned disclosure, should derive voluntarily and draw. In addition, the present invention only adopts above-described embodiment in order to illustrate, but protection scope of the present invention is not limited to this, adopt the isolating switch of other models or isolator carry out fault simulation and this situation class this, do not repeat them here. Protection scope of the present invention should be as the criterion with the protection domain that claim book defines.
Claims (7)
1. a converting equipment electrical control system fault simulator, is applicable to use isolating switch or isolator to realize the training system of fault simulation, it is characterised in that, comprising:
One touch control unit, has the monitoring interface showing the secondary control loop of described isolating switch or isolator, comprises some virtual buttons, the instruction that corresponding touch control unit sends respectively of each virtual button;
Receive a PLC control unit of described instruction;
The rly. group being connected with the output terminal of described PLC control unit;
The connection corresponding to some normally closed contacts of rly. group of the wire of the secondary control loop of described isolating switch or isolator;
Described PLC control unit is in order to control the opening and closing of normally closed contact and records the open and-shut mode of normally closed contact.
2. converting equipment electrical control system fault simulator as claimed in claim 1, it is characterised in that, described touch control unit is a touch-screen.
3. converting equipment electrical control system fault simulator as claimed in claim 2, it is characterised in that, described touch-screen sends instruction by pc-ppi communication modes to PLC control unit.
4. converting equipment electrical control system fault simulator as described in item as arbitrary in claims 1 to 3, it is characterised in that, described monitoring interface is made by kingview.
5. converting equipment electrical control system fault simulator as claimed in claim 1, it is characterised in that, described PLC control unit comprises a PLC master station and some PLC from station, and PLC master station and PLC transmit signal by rs485 communication modes between station.
6. converting equipment electrical control system fault simulator as claimed in claim 1, it is characterised in that, described converting equipment electrical control system fault simulator also comprises a switch power supply, in order to power to rly. group.
7. converting equipment electrical control system fault simulator as claimed in claim 1, it is characterised in that, described isolating switch selects LW30-72.5T type isolating switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410682755.4A CN105654821A (en) | 2014-11-24 | 2014-11-24 | Fault simulation apparatus for electrical control system of transformer equipment |
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| CN201410682755.4A CN105654821A (en) | 2014-11-24 | 2014-11-24 | Fault simulation apparatus for electrical control system of transformer equipment |
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| CN201410682755.4A Pending CN105654821A (en) | 2014-11-24 | 2014-11-24 | Fault simulation apparatus for electrical control system of transformer equipment |
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Cited By (6)
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| CN106546913A (en) * | 2016-11-01 | 2017-03-29 | 中科电力装备（安徽）智能化科技有限公司 | A kind of breaker relay protection detector |
| CN107093887A (en) * | 2017-05-24 | 2017-08-25 | 柳州秦合科技有限公司 | A kind of electric control system with self-protection function |
| CN107911923A (en) * | 2017-11-16 | 2018-04-13 | 欧普照明股份有限公司 | The light modulation output method and light adjusting controller of light adjusting controller |
| CN108122446A (en) * | 2016-11-29 | 2018-06-05 | 中车大同电力机车有限公司 | A kind of motorcycle pantograph control function experimental rig and method |
| CN108399843A (en) * | 2018-04-11 | 2018-08-14 | 三门技师学院 | Intelligent troubleshooting experience system, method and intelligent troubleshooting actual training device |
| CN109507930A (en) * | 2018-12-13 | 2019-03-22 | 中国航天空气动力技术研究院 | One kind being applied to pneumatic hot tunnel climatic test state trajectory control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106546913A (en) * | 2016-11-01 | 2017-03-29 | 中科电力装备（安徽）智能化科技有限公司 | A kind of breaker relay protection detector |
| CN108122446A (en) * | 2016-11-29 | 2018-06-05 | 中车大同电力机车有限公司 | A kind of motorcycle pantograph control function experimental rig and method |
| CN107093887A (en) * | 2017-05-24 | 2017-08-25 | 柳州秦合科技有限公司 | A kind of electric control system with self-protection function |
| CN107911923A (en) * | 2017-11-16 | 2018-04-13 | 欧普照明股份有限公司 | The light modulation output method and light adjusting controller of light adjusting controller |
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| CN109507930A (en) * | 2018-12-13 | 2019-03-22 | 中国航天空气动力技术研究院 | One kind being applied to pneumatic hot tunnel climatic test state trajectory control device |
| CN109507930B (en) * | 2018-12-13 | 2024-03-15 | 中国航天空气动力技术研究院 | Be applied to aerodynamic heat wind tunnel test state track controlling means |
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