CN204720058U - For the analogue loading device of electric power meter and reactive-load compensation actual training device - Google Patents
For the analogue loading device of electric power meter and reactive-load compensation actual training device Download PDFInfo
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- CN204720058U CN204720058U CN201520327177.2U CN201520327177U CN204720058U CN 204720058 U CN204720058 U CN 204720058U CN 201520327177 U CN201520327177 U CN 201520327177U CN 204720058 U CN204720058 U CN 204720058U
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Abstract
The utility model relates to a kind of analogue loading device for electric power meter and reactive-load compensation actual training device, comprise controller, first load combinations device and multiple connection terminal, main line (U is connected successively between multiple connection terminal, V, W, N), the phase line of the input end main line of described first load combinations device connects, the zero line of the output terminal main line of described first load combinations device connects, described first load combinations device comprises the first inductive load formed by multiple inductive load parallel connection and combines and combined by multiple inductive load the second inductive load formed in parallel and combined by multiple resistive load resistive load formed in parallel.It achieve the change of many merits power factor, make to need the training apparatus of power factor change to use very convenient, load can also be provided to electric power meter simultaneously.
Description
Technical field
The utility model relates to a kind of instructional device of power industry educational training, particularly a kind of analogue loading device for electric power meter and reactive-load compensation actual training device.
Background technology
In existing power network, between general transmission line of electricity both end voltage, phasing degree is less, and this illustrates that the size and Orientation of the reactive power that transmission line of electricity transmits depends on the size of both end voltage.Both end voltage difference is larger, and the reactive power flow through is just larger; If both end voltage difference is larger, the reactive power flow through is just larger; If the both end voltage value flow through is equal, the reactive power that circuit flows through is substantially zero, and at this moment, the reactive power needed for end load is supplied by the reactive power source being located at end, if reactive power will have power transmission line transmission, just must improve or reduce voltage.If improve or reduce certain end when making the magnitude of voltage of this point exceed the skew of permission, just should reduce the reactive power that circuit transmits and be no more than permissible value to ensure that terminal voltage offsets.Improving or reducing terminal voltage is all influential to transmission line of electricity and institute's bringing onto load.And, if there is accident, can be large-area.
But cause above-mentioned accident, cause mainly due to variation, and variation causing due to reactive-load compensation deficiency, is namely very important to the reactive-load compensation in power network.In present training, the load of simulation reactive-load compensation is that it is considerable, and do not have loaded operation, so reactive-load compensation also cannot work.Existing reactive-load compensation training is all intelligent simulation training, experience to student very intuitively, student lacks enthusiasm, applicant proposed a kind of reactive-load compensation actual training device, it can allow student take action on one's own to operate, substantially increase the execute-in-place ability of student, achieve theoretical combination actual, teaching result is good.But also lack a kind of load simulation actual training device coordinating reactive-load compensation training now, understand to help student's consummation and grasp reactive-load compensation.
Summary of the invention
The purpose of this utility model is the deficiency existed for prior art, a kind of analogue loading device for electric power meter and reactive-load compensation actual training device is provided, it achieve the change of many merits power factor, make to need the training apparatus of power factor change to use very convenient, load can also be provided to electric power meter simultaneously.
The purpose of this utility model is achieved in that a kind of analogue loading device for electric power meter and reactive-load compensation actual training device, comprise controller, first load combinations device and multiple connection terminal, main line U is connected successively between multiple connection terminal, V, W, N, the phase line of the input end main line of described first load combinations device connects, the zero line of the output terminal main line of described first load combinations device connects, described first load combinations device comprises the first inductive load formed by multiple inductive load parallel connection and combines and combined by multiple inductive load the second inductive load formed in parallel and combined by multiple resistive load resistive load formed in parallel, described resistive load combination is combined in parallel with the first inductive load, described first inductive load combination and the second inductive load combined serial, the input end of described first inductive load combination is connected with the phase line of main line, the output terminal of described first inductive load combination is connected with the zero line of main line through relay K A20, the input end that the output terminal of described first inductive load combination also combines with the second inductive load is connected, the output terminal of described second inductive load combination is connected with the zero line of main line, each inductive load U1-U5 in described first inductive load combination respectively correspondence is in series with relay K A2-KA6, each inductive load U6-U10 in described second inductive load combination respectively correspondence is in series with relay K A15-KA19, each resistive load Lamp1-Lamp4 in described resistive load combination respectively correspondence is in series with relay K A7-KA10, all relays are connected with controller respectively, described controller is used for the break-make of pilot relay, control the change of the power factor of the first load combinations device.
Each inductive load U1-U5 in described first inductive load combination respectively correspondence is parallel with pilot lamp HG1-HG5, each inductive load U6-U10 in described second inductive load combination respectively correspondence is parallel with pilot lamp HG6-HG10, and each the resistive load Lamp1-Lamp4 in described resistive load combination is parallel with pilot lamp HY1-HY4 respectively.
The total current flowing through the first load combinations device is not less than 200mA.
Described connection terminal is four, be respectively the first connection terminal, second connection terminal, 3rd connection terminal, 4th connection terminal, described first connection terminal, second connection terminal, 3rd connection terminal, 4th connection terminal is connected by main line successively, described first connection terminal is connected with electric power incoming line, between described first connection terminal and the second connection terminal, total power switch is set, between described second connection terminal and the 3rd connection terminal, electric power meter or reactive power compensator are set, between described 3rd connection terminal and the 4th connection terminal, load combinations device is set.
Relay K A1 is provided with between described first load combinations device and main line.
This analogue loading device being used for electric power meter and reactive-load compensation actual training device also comprises the second load combinations device, the phase line U402 of the input end main line of described second load combinations device, V402, W402 connects, the zero line N402 of the output terminal main line of described second load combinations device connects, described second load combinations device comprises multiple resistive load Lamp5-Lamp8, multiple resistive load Lamp5-Lamp8 of the second load combinations device are in parallel, each resistive load Lamp5-Lamp8 one end of second load combinations device is all connected with the zero line N402 of main line, the other end of each resistive load Lamp5-Lamp8 of the second load combinations device is connected respectively the common port of relay K A11-KA14, the normally opened contact of relay K A11-KA14 is all connected with the A phase line U402 of main line, a part of relay K A11 in second load combinations device, the normally closed contact of KA12 is all connected with the B phase line V402 of main line, the relay K A13 of another part, the normally closed contact of KA14 is all connected with the C phase line W402 of main line.
Relay K A1 is provided with between described second load combinations device and main line.
Each resistive load Lamp5-Lamp8 in described second load combinations device respectively correspondence is parallel with pilot lamp HY5-HY8.
Adopt such scheme, the utility model is had the following advantages: because this first load combinations device being used for the analogue loading device of electric power meter and reactive-load compensation actual training device comprises the resistive load combination of being combined by multiple inductive load the first inductive load formed in parallel and being combined by multiple inductive load the second inductive load formed in parallel and being formed by multiple resistive load parallel connection, described resistive load combination is combined in parallel with the first inductive load, described first inductive load combination and the second inductive load combined serial, the input end of described first inductive load combination is connected with the phase line of main line, the output terminal of described first inductive load combination is connected with the zero line of main line through relay K A20, the input end that the output terminal of described first inductive load combination also combines with the second inductive load is connected, the output terminal of described second inductive load combination is connected with the zero line of main line, each inductive load U1-U5 in described first inductive load combination respectively correspondence is in series with relay K A2-KA6, each inductive load U6-U10 in described second inductive load combination respectively correspondence is in series with relay K A15-KA19, each resistive load Lamp1-Lamp4 in described resistive load combination respectively correspondence is in series with relay K A7-KA10, all relays are connected with controller respectively, described controller is used for the break-make of pilot relay, control the change of the power factor of the first load combinations device, this makes it possible to the multiple choices realizing needing power factor or power, the variation of power factor can be realized.Load combinations is combined into by inductive load and resistive load, each inductive load and resistive load are by its break-make of Control above, thus just can realize the change of multiple power factor, the change of each power factor is all realize inductive load by the break-make of relay and resistive load is combined into.Need difference according to people, and select different inductive loads and resistive load combination, thus reach the power factor command that we need.
U1-U5(inductive load) and U6-U10(inductive load) belong to inductive load and connect, U1-U5(inductive load) to U6-U10(inductive load) belong to the series winding of inductive load, inductive load and connect power factor and can reduce, inductive load series winding power factor can become large.U1-U5(inductive load) and Lamp1-Lamp4(resistive load) and the power that can reduce inductive load after connecting makes inductive load (U1-U5) be not easy heating, resistive load (Lamp1-Lamp4) and inductive load (U6-U19) belong to series winding, and after series winding, inductive load just reduces heating.
The design of inductive load and resistive load circuit is according to making inductive load reduce heating and do not reduce the principle of total current as far as possible, designs resistive load and mainly enable inductive load less generate heat to design in this circuit.Designing this circuit can not allow total current lower than 200mA, and when this SG power utility check dummy load analogue means is used for reactive-load compensator, the electric current that reactive-load compensator needs can not be earth leakage protective device lower than 200mA, QS.
In a word, this analogue loading device being used for electric power meter and reactive-load compensation actual training device makes up the deficiency of intelligent simulation training, in order to the load needing the equipment of power factor change to provide variable power factor, it achieve the change of many merits power factor, make to need the training apparatus of power factor change to use very convenient, load can also be provided to electric power meter simultaneously.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the general supply control circuit figure of the analogue loading device for electric power meter and reactive-load compensation actual training device of the present utility model;
Fig. 2 is the control circuit figure of the first load combinations device of the analogue loading device for electric power meter and reactive-load compensation actual training device of the present utility model;
Fig. 3 is the control circuit figure of the second load combinations device of the analogue loading device for electric power meter and reactive-load compensation actual training device of the present utility model;
Fig. 4 is the control circuit figure of the PLC of the analogue loading device for electric power meter and reactive-load compensation actual training device of the present utility model;
Fig. 5 is the wiring schematic diagram that dress table connects electric power meter when electricity is trained;
The wiring schematic diagram of reactive power compensator when Fig. 6 is reactive-load compensation training.
Embodiment
See Fig. 1 to Fig. 6, a kind of analogue loading device for electric power meter and reactive-load compensation actual training device, comprise controller, the first load combinations device and multiple connection terminal, main line U, V, W, N is connected successively between multiple connection terminal, the phase line of the input end main line of described first load combinations device connects, the zero line of the output terminal main line of described first load combinations device connects, and is provided with relay K A1 between described first load combinations device and main line.Described first load combinations device comprises the first inductive load formed by multiple inductive load parallel connection and combines and combined by multiple inductive load the second inductive load formed in parallel and combined by multiple resistive load resistive load formed in parallel, described resistive load combination is combined in parallel with the first inductive load, described first inductive load combination and the second inductive load combined serial, the input end of described first inductive load combination is connected with the phase line of main line, the output terminal of described first inductive load combination is connected with the zero line of main line through relay K A20, the input end that the output terminal of described first inductive load combination also combines with the second inductive load is connected, the output terminal of described second inductive load combination is connected with the zero line of main line, each inductive load U1-U5 in described first inductive load combination respectively correspondence is in series with relay K A2-KA6, each inductive load U6-U10 in described second inductive load combination respectively correspondence is in series with relay K A15-KA19, each resistive load Lamp1-Lamp4 in described resistive load combination respectively correspondence is in series with relay K A7-KA10, all relays are connected with controller respectively, described controller is used for the break-make of pilot relay, control the change of the power factor of the first load combinations device.
Each inductive load U1-U5 in described first inductive load combination respectively correspondence is parallel with pilot lamp HG1-HG5, each inductive load U6-U10 in described second inductive load combination respectively correspondence is parallel with pilot lamp HG6-HG10, and each the resistive load Lamp1-Lamp4 in described resistive load combination is parallel with pilot lamp HY1-HY4 respectively.
Described connection terminal is four, be respectively the first connection terminal, second connection terminal, 3rd connection terminal, 4th connection terminal, described first connection terminal, second connection terminal, 3rd connection terminal, 4th connection terminal is connected by main line successively, described first connection terminal is connected with electric power incoming line, between described first connection terminal and the second connection terminal, total power switch is set, between described second connection terminal and the 3rd connection terminal, electric power meter or reactive power compensator are set, between described 3rd connection terminal and the 4th connection terminal, load combinations device is set.
The total current flowing through the first load combinations device is not less than 200mA.
This analogue loading device being used for electric power meter and reactive-load compensation actual training device also comprises the second load combinations device, the phase line U402 of the input end main line of described second load combinations device, V402, W402 connects, the zero line N402 of the output terminal main line of described second load combinations device connects, described second load combinations device comprises multiple resistive load Lamp5-Lamp8, multiple resistive load Lamp5-Lamp8 of the second load combinations device are in parallel, each resistive load Lamp5-Lamp8 one end of second load combinations device is all connected with the zero line N402 of main line, the other end of each resistive load Lamp5-Lamp8 of the second load combinations device is connected respectively the common port of relay K A11-KA14, the normally opened contact of relay K A11-KA14 is all connected with the A phase line U402 of main line, a part of relay K A11 in second load combinations device, the normally closed contact of KA12 is all connected with the B phase line V402 of main line, the relay K A13 of another part, the normally closed contact of KA14 is all connected with the C phase line W402 of main line.Each resistive load Lamp5-Lamp8 in described second load combinations device respectively correspondence is parallel with pilot lamp HY5-HY8.Relay K A1 is provided with between described second load combinations device and main line.
Load combinations is combined into by inductive load and resistive load, each inductive load and resistive load are by its break-make of Control above, thus just can realize the change of multiple power factor, the change of each power factor is all realize inductive load by the break-make of relay and resistive load is combined into.Wherein KA1-KA20 is the resistive load of auxiliary reclay, Lamp1-Lamp4, U1-U5 and U6-U10 is inductive load.Need difference according to people, and select different inductive loads and resistive load combination, thus reach the power factor command that we need.
In Fig. 2, one has 4 resistive loads and 10 inductive loads, has used 19 Controls, this makes it possible to the multiple choices realizing needing power factor or power, can realize the variation of power factor.U1-U5(inductive load) and U6-U10(inductive load) belong to inductive load and connect, U1-U5(inductive load) to U6-U10(inductive load) belong to the series winding of inductive load, inductive load and connect power factor and can reduce, inductive load series winding power factor can become large.U1-U5(inductive load) and Lamp1-Lamp4(resistive load) and the power that can reduce inductive load after connecting makes inductive load (U1-U5) be not easy heating, resistive load (Lamp1-Lamp4) and inductive load (U6-U19) belong to series winding, and after series winding, inductive load just reduces heating.
The design of inductive load and resistive load circuit is according to making inductive load reduce heating and do not reduce the principle of total current as far as possible, designs resistive load and mainly enable inductive load less generate heat to design in this circuit.Designing this circuit can not allow total current lower than 200mA, and when the analogue loading device that this SG is used for electric power meter and reactive-load compensation actual training device is used for reactive-load compensator, the electric current that reactive-load compensator needs can not be earth leakage protective device lower than 200mA, QS.
This is used for that the main circuit between the first connection terminal of the analogue loading device of electric power meter and reactive-load compensation actual training device, the second connection terminal is designed with urgency and stops; wherein KM is A.C. contactor; KA21 is relay; each phase has voltage table and reometer; make like this electric current of each phase of observation and voltage convenient, middle three-phase isolation transformer can make circuit better protect life safety.This total power switch being used for the analogue loading device of electric power meter and reactive-load compensation actual training device is by relay, A.C. contactor and suddenly stop being combined into, with one of relay group of normally opened contact with suddenly stop controlling ac contactor coil.Carry out pilot relay coil with PLC programmable device again, so just can carry out the start and stop (PLC programmable device is controlled by computing machine) of opertaing device with computing machine, the protection life safety that can have given.
In the analogue loading device that this is used for electric power meter and reactive-load compensation actual training device, the first connection terminal is for tapping into line terminals Teminal Block, and this connection terminal needs to draw three-phase electricity and zero line outside.R/S/T is three-phase isolation transformer, and in main line, add that it can better protect life safety, PLC is the power supply of PLC programmable device, PA1, PA2, PA3, is reometer, and PV1, PV2, PV3 are voltage table.
This analogue loading device being used for electric power meter and reactive-load compensation actual training device is arranged in a cabinet, convenient mobile, and is conducive to the keeping of equipment.Described cabinet lower end can arrange roller.Described cabinet is provided with forward and backward electric mounting board, respectively the front and back of corresponding cabinet.Described front electric mounting board is arranged the compositions such as scram button, resistive load pilot lamp, inductive load pilot lamp, earth leakage protective device and can operate front panel.Described rear electric mounting board arranges reometer, voltage table, connection terminal.
This analogue loading device being used for electric power meter and reactive-load compensation actual training device is can for the instrument power supply of three-phase low-voltage electric energy meter and so on; KA11(relay in figure 3) and KA12(relay) normally closed contact be receive earth leakage protective device outlet B phase above, KA13(relay) and KA14(relay) normally closed contact be receive earth leakage protective device outlet C phase above.
This controller be used in the analogue loading device of electric power meter and reactive-load compensation actual training device is PLC.What in Fig. 4, PLC HOST represented is PLC programmable device main frame, what PLC CTTP represented is PLC programmable device supplementary module, PLC programmable device controls the start and stop of auxiliary reclay, real training can be carried out the running status of opertaing device by computing machine, for real training provides facility by PLC programmable device and computer communication.
Claims (8)
1. the analogue loading device for electric power meter and reactive-load compensation actual training device, it is characterized in that: comprise controller, first load combinations device and multiple connection terminal, main line (U is connected successively between multiple connection terminal, V, W, N), the phase line of the input end main line of described first load combinations device connects, the zero line of the output terminal main line of described first load combinations device connects, described first load combinations device comprises the first inductive load formed by multiple inductive load parallel connection and combines and combined by multiple inductive load the second inductive load formed in parallel and combined by multiple resistive load resistive load formed in parallel, described resistive load combination is combined in parallel with the first inductive load, described first inductive load combination and the second inductive load combined serial, the input end of described first inductive load combination is connected with the phase line of main line, the output terminal of described first inductive load combination is connected with the zero line of main line through relay (KA20), the input end that the output terminal of described first inductive load combination also combines with the second inductive load is connected, the output terminal of described second inductive load combination is connected with the zero line of main line, each inductive load (U1-U5) in described first inductive load combination respectively correspondence is in series with relay (KA2-KA6), each inductive load (U6-U10) in described second inductive load combination respectively correspondence is in series with relay (KA15-KA19), each resistive load (Lamp1-Lamp4) in described resistive load combination respectively correspondence is in series with relay (KA7-KA10), all relays are connected with controller respectively, described controller is used for the break-make of pilot relay, control the change of the power factor of the first load combinations device.
2. the analogue loading device for electric power meter and reactive-load compensation actual training device according to claim 1, it is characterized in that: each inductive load (U1-U5) in described first inductive load combination respectively correspondence is parallel with pilot lamp (HG1-HG5), each inductive load (U6-U10) in described second inductive load combination respectively correspondence is parallel with pilot lamp (HG6-HG10), and each resistive load (Lamp1-Lamp4) in described resistive load combination is parallel with pilot lamp (HY1-HY4) respectively.
3. the analogue loading device for electric power meter and reactive-load compensation actual training device according to claim 1, is characterized in that: electric current is not less than 200mA through the total current of the first load combinations device.
4. the analogue loading device for electric power meter and reactive-load compensation actual training device according to claim 1, it is characterized in that: described connection terminal is four, be respectively the first connection terminal, second connection terminal, 3rd connection terminal, 4th connection terminal, described first connection terminal, second connection terminal, 3rd connection terminal, 4th connection terminal is connected by main line successively, described first connection terminal is connected with electric power incoming line, between described first connection terminal and the second connection terminal, total power switch is set, between described second connection terminal and the 3rd connection terminal, electric power meter or reactive power compensator are set, between described 3rd connection terminal and the 4th connection terminal, load combinations device is set.
5. the analogue loading device for electric power meter and reactive-load compensation actual training device according to claim 1, is characterized in that: be provided with relay (KA1) between described first load combinations device and main line.
6. the analogue loading device for electric power meter and reactive-load compensation actual training device according to claim 1, it is characterized in that: also comprise the second load combinations device, phase line (the U402 of the input end main line of described second load combinations device, V402, W402) connect, the zero line (N402) of the output terminal main line of described second load combinations device connects, described second load combinations device comprises multiple resistive load (Lamp5-Lamp8), multiple resistive loads (Lamp5-Lamp8) of the second load combinations device are in parallel, each resistive load (Lamp5-Lamp8) one end of second load combinations device is all connected with the zero line (N402) of main line, the other end of each resistive load (Lamp5-Lamp8) of the second load combinations device is connected respectively the common port of relay (KA11-KA14), the normally opened contact of relay (KA11-KA14) is all connected with the A phase line (U402) of main line, a part of relay (KA11 in second load combinations device, KA12) normally closed contact is all connected with the B phase line (V402) of main line, relay (the KA13 of another part, KA14) normally closed contact is all connected with the C phase line (W402) of main line.
7. the analogue loading device for electric power meter and reactive-load compensation actual training device according to claim 6, is characterized in that: be provided with relay (KA1) between described second load combinations device and main line.
8. the analogue loading device for electric power meter and reactive-load compensation actual training device according to claim 6, is characterized in that: each resistive load (Lamp5-Lamp8) in described second load combinations device respectively correspondence is parallel with pilot lamp (HY5-HY8).
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| CN201520327177.2U CN204720058U (en) | 2015-05-20 | 2015-05-20 | For the analogue loading device of electric power meter and reactive-load compensation actual training device |
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| CN201520327177.2U CN204720058U (en) | 2015-05-20 | 2015-05-20 | For the analogue loading device of electric power meter and reactive-load compensation actual training device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107356829A (en) * | 2017-06-16 | 2017-11-17 | 国家电网公司 | Transformer capacity simulation and training device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356829A (en) * | 2017-06-16 | 2017-11-17 | 国家电网公司 | Transformer capacity simulation and training device |
| CN107356829B (en) * | 2017-06-16 | 2024-03-29 | 国家电网公司 | Transformer capacity simulation training device |
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