CN202904967U - Device for simulating distribution network standard conversion - Google Patents
Device for simulating distribution network standard conversion Download PDFInfo
- Publication number
- CN202904967U CN202904967U CN 201220507433 CN201220507433U CN202904967U CN 202904967 U CN202904967 U CN 202904967U CN 201220507433 CN201220507433 CN 201220507433 CN 201220507433 U CN201220507433 U CN 201220507433U CN 202904967 U CN202904967 U CN 202904967U
- Authority
- CN
- China
- Prior art keywords
- jack
- converting unit
- line
- contactor
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a device for simulating distribution network standard conversion. The device comprises a transformer, a first simulation three-phase device, a second simulation three-phase device, a first simulation single-phase device, a second simulation single-phase device, a primary standard conversion unit, a secondary standard conversion unit, a first protection conversion unit, a second protection conversion unit, a third protection conversion unit and a fourth protection conversion unit. According to the weaknesses in the prior art, the utility model provides the device for simulating distribution network standard conversion. With the device adopted, the conversion of five standards can be realized; the technical skill training of distribution network standards sand troubleshooting for employees can be realized; the ability of the employees for solving in-situ problems can be rapidly improved; and the employees not only can carry out positive learning through standard setting, but also can reproduce simulation faults which are identical to in-situ real situations so as to carry out reverse experiential training at any time.
Description
Technical field
The utility model relates to a kind of simulation teching actual training device, relates in particular to a kind of device of simulating distribution system conversion.
Background technology
In low voltage power distribution network, because the difference of the mode of connection and protection (ground connection or connecting to neutral) form, its electric power system is divided for IT, TT, TN (TN-C, TN-S, TN-C-S) system.
Correct understanding and promote the use of above several low-voltage variation mode of connection and electric power system; select suitable ground connection or zero connection protection for actual conditions; guarantee the safety of the person and distribution system; ensure the normal operation of electrical equipment, electronic equipment, raising power grid security, reliability service have very important meaning.
The Grounding Types of low-voltage distribution system and safety problem, in the past for many years between, all once carried out long-term discussion, test both at home and abroad, the architectural electricity device standard that International Electrotechnical Commission passed through in 1977 has been summed up the ground connection way of the low-voltage distribution system of countries in the world, just formal unified be divided into TN, TT, three kinds of earthed systems of IT.
And according to different ways, TN-S, TN-C, three kinds of patterns of TN-C-S are arranged again in the TN system.
In the IEC364-4-41 of nineteen eighty-two standard, the specific requirement of further clear and definite specific practices and safeguard measure.The requirement total to the electric shock protection indirect contact under failure condition protection, no matter the Grounding Types of its system is how, two measures must general character considering: 1. with the protection of automatically cutting off power supply; 2. total equipotential bonding.And its safeguard measure of clearer and more definite proposition; First will match with the Grounding Types of system; Second will adapt with the characteristic of protective device.
At present, the Grounding Types of relevant system and the technical training of malfunction elimination thereof are mainly carried out with theoretical mode, and a lot of workers at the production line can not understand bookish knowwhy, more can't correctly grasp associative skills and process the on-the-spot practical problems that runs into.
Certainly, also have and utilize true distribution to learn, but have following problem:
(1) learning content is single, can only see the fault that has occurred, and can not see various faults, and the chance of study somethings can only be found by accident, and not through seeking;
(2) can not reappear fault, and do not understand, do not have can't relearning again and the learning cost height of association, can't carry out according to plan, randomness is large.
The utility model content
The utility model is for the deficiencies in the prior art, a kind of device of simulating distribution system conversion is provided, can realize the conversion of five kinds of standards, to realize the skills training to employee's distribution standard and malfunction elimination, improve fast the ability that the employee solves on-the-spot problem, the employee can carry out forward study by the standard setting, can reproduce the simulated failure identical with on-site actual situations again, carries out at any time reverse experience type training.
The utility model is that the technical scheme that solves the problems of the technologies described above employing is: a kind of device of simulating distribution system conversion; comprise transformer; first; the second simulation three-phase equipment; first; the single-phase equipment of the second simulation; described first; the second simulation three-phase equipment; and first; the single-phase equipment of the second simulation is electrically connected with Circuit Fault on Secondary Transformer respectively; also comprise one-level system conversion unit; secondary standard converting unit; the first protection converting unit; the second protection converting unit; the 3rd protection converting unit; the 4th protection converting unit; the neutral point of described transformer is by the working earthing end ground connection of one-level system conversion unit; the N line contact of one-level system conversion unit is simulated single-phase equipment with first respectively; first; the second protection converting unit is electrically connected; and simulate single-phase equipment with second respectively by secondary standard converting unit; the 3rd; the 4th protection converting unit is electrically connected; the PE line contact of one-level system conversion unit is respectively with first; the second protection converting unit is electrically connected; and pass through secondary standard converting unit respectively with the 3rd; the 4th protection converting unit is electrically connected; first; second; the 3rd; the protective grounding ground connection of the 4th protection converting unit; the first simulation three-phase equipment is electrically connected with the first protection converting unit by shell protective ground line; the single-phase equipment of the first simulation is electrically connected with the second protection converting unit by shell protective ground line; the second simulation three-phase equipment is electrically connected with the 3rd protection converting unit by shell protective ground line, and the single-phase equipment of the second simulation is electrically connected with the 4th protection converting unit by shell protective ground line.
Described one-level system conversion unit comprises three keyswitch SB1, SB2, SB3 and three A.C. contactor KM1, KM2, KM3, wherein, A.C. contactor KM1 connects input power by keyswitch SB1, A.C. contactor KM2 connects input power by keyswitch SB2, A.C. contactor KM3 connects input power by keyswitch SB3, the normal opened contact K1 of A.C. contactor KM1 is located between neutral point and the working earthing line E, the normal opened contact K2 of A.C. contactor KM2 is located between neutral point and the N line contact, and the normal opened contact K3 of A.C. contactor KM3 is located between neutral point and the PE line contact.
Described secondary standard converting unit comprises two keyswitch SB4, SB5 and two A.C. contactor KM4, KM5, wherein, A.C. contactor KM4 connects input power by keyswitch SB4, A.C. contactor KM5 connects input power by keyswitch SB5, the normal opened contact K4 of A.C. contactor KM4 is located between the input contact and output contact of N line, and the normal opened contact K5 of A.C. contactor KM5 is located between N line output contact and the PE line contact.
Described the first protection converting unit; the second protection converting unit; the 3rd protection converting unit; the circuit structure of the 4th protection converting unit is identical; this circuit structure comprises three keyswitch SB6; SB7; SB8 and three A.C. contactor KM6; KM7; KM8; wherein; A.C. contactor KM6 connects input power by keyswitch SB6; A.C. contactor KM7 connects input power by keyswitch SB7; A.C. contactor KM8 connects input power by keyswitch SB8; the normal opened contact K6 of A.C. contactor KM6 is located between shell protective ground line and the N line contact; the normal opened contact K7 of A.C. contactor KM7 is located between shell protective ground line and the PE line contact, and the normal opened contact K8 of A.C. contactor KM8 is located between shell protective ground line and the protective grounding.
Described one-level system conversion unit comprises four jacks, be respectively the first jack, the second jack, the 3rd jack, the 4th jack, wherein, the first jack is electrically connected neutral point, the second jack is electrically connected N line contact, the 3rd jack is electrically connected PE line contact, and the 4th jack is electrically connected the working earthing end, and the connection between the jack connects by connecting line or miniature circuit breaker.
Described secondary standard converting unit comprises three jacks, be respectively the 5th jack, the 6th jack, the 7th jack, wherein, the 5th jack is electrically connected N line input contact, the 6th jack is electrically connected N line output contact, the 7th jack is electrically connected PE line output contact, and the connection between the jack connects by connecting line or miniature circuit breaker.
The circuit structure of described the first protection converting unit, the second protection converting unit, the 3rd protection converting unit, the 4th protection converting unit is identical; this circuit structure comprises four jacks; be respectively the 8th jack, the 9th jack, the tenth jack, the 11 jack; wherein; the 8th jack is electrically connected N line contact; the 9th jack is electrically connected PE line contact; the tenth jack is electrically connected protective grounding; the 11 jack is electrically connected shell protective ground line, and the connection between the jack connects by connecting line or miniature circuit breaker.
The beneficial effects of the utility model are: can realize isolated neutral system and earth neutral system by one-level system conversion unit, wherein, isolated neutral system can be used as the conversion of IT system isolated neutral.Can also realize the neutral earthing of system in the earth neutral system; and the neutral line of system and protective wire PE are combined into a protective earthing-neutral conductor; can be used as the conversion of TN-C system neutral ground connection; and the neutral earthing of system; and the neutral line N of system and protective wire PE are separately, can be used as the conversion of TN-S system neutral ground connection.Can draw independent PE line and N line to the protective earthing-neutral conductor that is combined in the TN-C system by secondary standard converting unit, form Three-phase five-wire, can carry out the TN-C system and turn the PE of TN-S system line access conversion.The protection converting unit can carry out the device housings zero connection protection, connect protective earthing-neutral conductor protection, connect the different switching of the protection of PE line, ground protection.
In a word; the various modes of connection of Circuit Fault on Secondary Transformer can be realized in one-level system conversion unit; can carry out the neutral ground conversion operations; the PE of TN-S system line connects N line conversion operations; secondary standard converting unit can be carried out the TN-C system and be turned the PE of TN-S system line access conversion operations; the protection converting unit can be carried out the device housings zero connection protection; simulate the one-level system conversion unit of the device of distribution system conversion by this; secondary standard converting unit; the conversion that protection converting unit and various analog machine can be realized various standards can realize IT; TT; TN-C; TN-S; TN-C-S three classes amount to the conversion of five kinds of standards.
Description of drawings
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the schematic diagram that one-level system conversion unit adopts contactor control conversion regime;
Fig. 3 is the schematic diagram that secondary standard converting unit adopts contactor control conversion regime;
Fig. 4 adopts the schematic diagram of contactor control conversion regime for the protection converting unit;
Fig. 5 is the schematic diagram that one-level system conversion unit adopts binding post or miniature circuit breaker conversion regime;
Fig. 6 is the schematic diagram that secondary standard converting unit adopts binding post or miniature circuit breaker conversion regime;
Fig. 7 adopts the schematic diagram of binding post or miniature circuit breaker conversion regime for the protection converting unit;
Fig. 8 is the schematic diagram of IT system pattern;
Fig. 9 is the schematic diagram of TN-C system model;
Figure 10 is the schematic diagram of TN-S system model;
Figure 11 is the schematic diagram of TN-C-S system model;
Figure 12 is the schematic diagram of TT system model.
In the accompanying drawing, 1 is transformer, and 2 is the first simulation three-phase equipment; 3 is the single-phase equipment of the first simulation, and 4 is the second simulation three-phase equipment, and 5 is the single-phase equipment of the second simulation; 6 is one-level system conversion unit, and 61 is the first jack, and 62 is the second jack; 63 is the 3rd jack, and 64 is the 4th jack, and 7 is secondary standard converting unit; 71 is the 5th jack; 72 is the 6th jack, and 73 is the 7th jack, and 8 is the first protection converting unit; 81 is the 8th jack; 82 is the 9th jack, and 83 is the tenth jack, and 84 is the 11 jack; 9 is the second protection converting unit; 10 is the 3rd protection converting unit, and 11 is the 4th protection converting unit, and 12 is resistance.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Referring to shown in Figure 1; a kind of device of simulating distribution system conversion; comprise transformer 1; first; the second simulation three-phase equipment 2; 4; first; the single-phase equipment 3 of the second simulation; 5; described first; the second simulation three-phase equipment 2; 4; and first; the single-phase equipment 3 of the second simulation; 5 are electrically connected with Circuit Fault on Secondary Transformer respectively; described first; the second simulation three-phase equipment 2; 4; and first; the single-phase equipment 3 of the second simulation; 5 and Circuit Fault on Secondary Transformer between be equipped with resistance 12; this device also comprises one-level system conversion unit 6; secondary standard converting unit 7; the first protection converting unit 8; the second protection converting unit 9; the 3rd protection converting unit 10; the 4th protection converting unit 11; the neutral point of described transformer 1 is by the working earthing end ground connection of one-level system conversion unit; one-level system conversion unit 1 is by working earthing line E ground connection; the N line contact of one-level system conversion unit 6 is simulated single-phase equipment 3 with first respectively; first; the second protection converting unit 8; 9 are electrically connected; and simulate single-phase equipment 5 with second respectively by secondary standard converting unit 7; the 3rd; the 4th protection converting unit 10; 11 are electrically connected; the single-phase equipment 3 of the first simulation all is electrically connected Circuit Fault on Secondary Transformer live wire and N line with the single-phase equipment 5 of the second simulation, consists of the loop.The PE line contact of one-level system conversion unit 6 is respectively with first; the second protection converting unit 8; 9 are electrically connected; and pass through secondary standard converting unit 7 respectively with the 3rd; the 4th protection converting unit 10; 11 are electrically connected; first; second; the 3rd; the 4th protection converting unit 8; 9; 10; 11 protective grounding ground connection; present embodiment first; second; the 3rd; the 4th protection converting unit 8; 9; 10; 11 respectively by protective ground line PE1; PE2; PE3; PE4 ground connection; the first simulation three-phase equipment 2 is electrically connected with the first protection converting unit 8 by shell protective ground line PE31; the single-phase equipment 3 of the first simulation is electrically connected with the second protection converting unit 9 by shell protective ground line PE11; the second simulation three-phase equipment 4 is electrically connected with the 3rd protection converting unit 10 by shell protective ground line PE32, and the single-phase equipment 5 of the second simulation is electrically connected with the 4th protection converting unit 11 by shell protective ground line PE12.
The various modes of connection of Circuit Fault on Secondary Transformer can be realized in one-level system conversion unit 6; can carry out the neutral ground conversion operations; the PE of TN-S system line connects N line conversion operations; secondary standard converting unit 7 can be carried out the TN-C system and be turned the PE of TN-S system line access conversion operations; the protection converting unit can be carried out the device housings zero connection protection; simulate the one-level system conversion unit 6 of the device of distribution system conversion by this; secondary standard converting unit 7; the conversion that protection converting unit and various analog machine can be realized various standards can realize IT; TT; TN-C; TN-S; TN-C-S three classes amount to the conversion of five kinds of standards.Fig. 8 to Figure 12 is the schematic diagram of IT, TT, TN-C, TN-S, five kinds of standards of TN-C-S.Its specific implementation principle is that the principle of work of the various standards of foundation adopts the conversion regime of switching value to carry out, and different embodiment are also different according to the conversion regime that adopts switching value.
Embodiment one
Referring to shown in Figure 2, described one-level system conversion unit 6 comprises three keyswitch SB1, SB2, SB3 and three A.C. contactor KM1, KM2, KM3, wherein, A.C. contactor KM1 connects input power by keyswitch SB1, A.C. contactor KM2 connects input power by keyswitch SB2, A.C. contactor KM3 connects input power by keyswitch SB3, the normal opened contact K1 of A.C. contactor KM1 is located between neutral point and the working earthing line E, the normal opened contact K2 of A.C. contactor KM2 is located between neutral point and the N line contact, and the normal opened contact K3 of A.C. contactor KM3 is located between neutral point and the PE line contact.
During not according to any switch, one-level system conversion unit 6 can realize that neutral point separates with working earthing line E, and neutral point separates with the PE line, and neutral point separates with the N line, is converted to the transformer neutral point isolated neutral system, can be used as the conversion of IT system isolated neutral.The switch S that pushes button B1, one-level system conversion unit 6 can realize that neutral point is connected with working earthing line E, and neutral point separates with the PE line simultaneously, and neutral point separates with the N line, be converted to the transformer neutral point earthed system, can be used as TT, the conversion of TN system neutral ground connection.The switch S that pushes button B1, SB2, one-level system conversion unit 6 can realize that neutral point is connected with working earthing line E, and neutral point is connected with the N line, and neutral point separates with the PE line simultaneously, be converted to the transformer neutral point earthed system, can be used as TT, TN-C neutral point and the conversion of N line common ground.The switch S that pushes button B1, SB2, SB3, one-level system conversion unit 6 can realize that neutral point is connected with working earthing line E, neutral point is connected with the N line, neutral point is connected with the PE line, be converted to the transformer neutral point earthed system, can be used as TN-S system neutral, zero line N and the conversion of PE line common ground.
Referring to shown in Figure 3, described secondary standard converting unit 7 comprises two keyswitch SB4, SB5 and two A.C. contactor KM4, KM5, wherein, A.C. contactor KM4 connects input power by keyswitch SB4, A.C. contactor KM5 connects input power by keyswitch SB5, the normal opened contact K4 of A.C. contactor KM4 is located between the input contact and output contact of N line, and the normal opened contact K5 of A.C. contactor KM5 is located between N line output contact and the PE line contact.
The switch S that pushes button B4, SB5 can draw independent PE line and N line to the protective earthing-neutral conductor that is combined in the TN-C system, form Three-phase five-wire, can realize that TN-C turns the TN-S system, form the TN-C-S system, the front of secondary converting unit is the TN-C system, and the back is the TN-S system.
Referring to shown in Figure 4; described the first protection converting unit 8 comprises three keyswitch SB6; SB7; SB8 and three A.C. contactor KM6; KM7; KM8; wherein; A.C. contactor KM6 connects input power by keyswitch SB6; A.C. contactor KM7 connects input power by keyswitch SB7; A.C. contactor KM8 connects input power by keyswitch SB8; the normal opened contact K6 of A.C. contactor KM6 is located between the N line contact of shell protective ground line PE31 and one-level system conversion unit 6; the normal opened contact K7 of A.C. contactor KM7 is located between the PE line contact of shell protective ground line PE31 and one-level system conversion unit 6, and the normal opened contact K8 of A.C. contactor KM8 is located between shell protective ground line PE31 and the protective ground line PE1.
Described the second protection converting unit 9 comprises three keyswitch SB6; SB7; SB8 and three A.C. contactor KM6; KM7; KM8; wherein; the A.C. contactor KM6 of the second protection converting unit 9 connects input power by the keyswitch SB6 of the second protection converting unit 9; the A.C. contactor KM7 of the second protection converting unit 9 connects input power by the keyswitch SB7 of the second protection converting unit 9; the A.C. contactor KM8 of the second protection converting unit 9 connects input power by the keyswitch SB8 of the second protection converting unit 9; the normal opened contact K6 of the A.C. contactor KM6 of the second protection converting unit 9 is located between the N line contact of shell protective ground line PE11 and one-level system conversion unit 6; the normal opened contact K7 of the A.C. contactor KM7 of the second protection converting unit 9 is located between the PE line contact of shell protective ground line PE11 and one-level system conversion unit 6, and the normal opened contact K8 of the A.C. contactor KM8 of the second protection converting unit 9 is located between shell protective ground line PE11 and the protective ground line PE2.
Described the 3rd protection converting unit 10 comprises three keyswitch SB6; SB7; SB8 and three A.C. contactor KM6; KM7; KM8; wherein; the A.C. contactor KM6 of the 3rd protection converting unit 10 connects input power by the keyswitch SB6 of the 3rd protection converting unit 10; the A.C. contactor KM7 of the 3rd protection converting unit 10 connects input power by the keyswitch SB7 of the 3rd protection converting unit 10; the A.C. contactor KM8 of the 3rd protection converting unit 10 connects input power by the keyswitch SB8 of the 3rd protection converting unit 10; the normal opened contact K6 of the A.C. contactor KM6 of the 3rd protection converting unit 10 is located between the N line output contact of shell protective ground line PE32 and secondary standard converting unit 7; the normal opened contact K7 of the A.C. contactor KM7 of the 3rd protection converting unit 10 is located between the PE line output contact of shell protective ground line PE32 and secondary standard converting unit 7, and the normal opened contact K8 of the A.C. contactor KM8 of the 3rd protection converting unit 10 is located between shell protective ground line PE32 and the protective ground line PE3.
Described the 4th protection converting unit 11 comprises three keyswitch SB6; SB7; SB8 and three A.C. contactor KM6; KM7; KM8; wherein; the A.C. contactor KM6 of the 4th protection converting unit 11 connects input power by the keyswitch SB6 of the 4th protection converting unit 11; the A.C. contactor KM7 of the 4th protection converting unit 11 connects input power by the keyswitch SB7 of the 4th protection converting unit 11; the A.C. contactor KM8 of the 4th protection converting unit 11 connects input power by the keyswitch SB8 of the 4th protection converting unit 11; the normal opened contact K6 of the A.C. contactor KM6 of the 4th protection converting unit 11 is located between the N line output contact of shell protective ground line PE12 and secondary standard converting unit 7; the normal opened contact K7 of the A.C. contactor KM7 of the 4th protection converting unit 11 is located between the PE line output contact of shell protective ground line PE12 and secondary standard converting unit 7, and the normal opened contact K8 of the A.C. contactor KM8 of the 4th protection converting unit 11 is located between shell protective ground line PE12 and the protective ground line PE4.
Press the keyswitch SB6 that respectively protects converting unit, the shell protective ground line of analog machine can be connected with the PE line by the protection converting unit, separates with N line, protective ground line; Can realize that TN-S connects the protective wire conversion.
Press the keyswitch SB7 that respectively protects converting unit, the shell protective ground line of analog machine can be connected with the N line by the protection converting unit, separates with PE line, protective ground line PE1; Can realize TT, the conversion of TN-C zero connection protection.
Press the keyswitch SB8 that respectively protects converting unit, the shell protective ground line of analog machine can be connected with protective ground line PE1 by the protection converting unit, separates with N line, PE line; Can realize TT system earth protection conversion.
Each protects converting unit all to be electrically connected Circuit Fault on Secondary Transformer live wire and N line; consist of the loop; 220V voltage is provided for each A.C. contactor; switch pushes button; the ac contactor coil energising that is connected with this keyswitch; the normal opened contact of this A.C. contactor closes, and is connected to the connection at these normal opened contact two ends.
Using method of the present utility model: 1. when the needs IT system, the keyswitch SB8 that presses the first protection converting unit 8 gets final product; 2. when needs TN-C system, press keyswitch SB1 and the keyswitch SB2 of next stage system conversion unit 6, the keyswitch SB7 of the first protection converting unit 8, the keyswitch SB7 of the second protection converting unit 9 gets final product; 3. when needs TN-S system, press keyswitch SB1, keyswitch SB2 and the keyswitch SB3 of next stage system conversion unit 6, the keyswitch SB6 of the first protection converting unit 8, the keyswitch SB6 of the second protection converting unit 9 gets final product; 4. when needs TN-C-S system, the keyswitch SB1 and the keyswitch SB2 that connect upper level system conversion unit 6, the keyswitch SB4 of secondary standard converting unit 7 and keyswitch SB5, the keyswitch SB7 of the first protection converting unit 8, the keyswitch SB7 of the second protection converting unit 9, the keyswitch SB6 of the 3rd protection converting unit 10, the keyswitch SB6 of the 4th protection converting unit 11 gets final product; 5. when needs TT system, press keyswitch SB1 and the keyswitch SB2 of next stage system conversion unit 6, the keyswitch SB8 of the first protection converting unit 8, the keyswitch SB8 of the second protection converting unit 9 gets final product.
Embodiment two
Referring to shown in Figure 5, described one-level system conversion unit 6 comprises four jacks, be respectively the first jack 61, the second jack 62, the 3rd jack 63, the 4th jack 64, wherein, the first jack 61 is electrically connected neutral point, and the second jack 62 is electrically connected N line contact, and the 3rd jack 63 is electrically connected PE line contact, the 4th jack 64 is electrically connected the working earthing end, and the connection between the jack connects by connecting line or miniature circuit breaker.
When not connecting any jack, one-level system conversion unit 6 can realize that neutral point separates with working earthing line E, and neutral point separates with the PE line, and neutral point separates with the N line, is converted to the transformer neutral point isolated neutral system, can be used as the conversion of IT system isolated neutral.When connecting the first jack 61 and the 4th jack 64, one-level system conversion unit 6 can realize that neutral point is connected with working earthing line E, and neutral point separates with the PE line simultaneously, and neutral point separates with the N line, be converted to the transformer neutral point earthed system, can be used as TT, the conversion of TN system neutral ground connection.Connect the first jack 61 and the second jack 62, when the first jack 61 and the 4th jack 64, one-level system conversion unit 6 can realize that neutral point is connected with working earthing line E, neutral point is connected with the N line, neutral point separates with the PE line simultaneously, be converted to the transformer neutral point earthed system, can be used as TT, TN-C neutral point and the conversion of N line common ground.Connect the first jack 61 and the second jack 62, the first jack 61 and the 3rd jack 63, when the first jack 61 and the 4th jack 64, one-level system conversion unit 6 can realize that neutral point is connected with working earthing line E, neutral point is connected with the N line, neutral point is connected with the PE line, is converted to the transformer neutral point earthed system, can be used as TN-S system neutral, N line and the conversion of PE line common ground.This enforcement can connect with connecting line and also can connect with miniature circuit breaker.
Referring to shown in Figure 6, described secondary standard converting unit 7 comprises three jacks, be respectively the 5th jack 71, the 6th jack 72, the 7th jack 73, wherein, the 5th jack 71 is electrically connected N line input contact, the 6th jack 72 is electrically connected N line output contact, and the 7th jack 73 is electrically connected PE line output contact, and the connection between the jack connects by connecting line or miniature circuit breaker.
Connect the 6th jack and 72 the 5th jacks 71, can draw independent PE line and N line to the protective earthing-neutral conductor that is combined in the TN-C system when the 6th jack 72 and the 7th jack 73, form Three-phase five-wire, can realize that TN-C turns the TN-S system, form the TN-C-S system, the front of secondary converting unit is the TN-C system, and the back is the TN-S system.This enforcement can connect with connecting line and also can connect with miniature circuit breaker.
Referring to shown in Figure 7; described the first protection converting unit 8 comprises four jacks; be respectively the 8th jack, the 9th jack, the tenth jack, the 11 jack; wherein; the 8th jack is electrically connected the N line contact of one-level system conversion unit 6, and the 9th jack is electrically connected the PE line contact of one-level system conversion unit 6, and the tenth jack is electrically connected protective ground line PE1; the 11 jack is electrically connected shell protective ground line PE31, and the connection between the jack connects by connecting line or miniature circuit breaker.
Described the second protection converting unit 9 comprises four jacks; be respectively the 8th jack; the 9th jack; the tenth jack; the 11 jack; wherein; the 8th jack of the second protection converting unit 9 is electrically connected the N line contact of one-level system conversion unit 6; the 9th jack of the second protection converting unit 9 is electrically connected the PE line contact of one-level system conversion unit 6; the tenth jack of the second protection converting unit 9 is electrically connected protective ground line PE2; the 11 jack of the second protection converting unit 9 is electrically connected shell protective ground line PE11, and the connection between the jack connects by connecting line or miniature circuit breaker.
Described the 3rd protection converting unit 10 comprises four jacks; be respectively the 8th jack; the 9th jack; the tenth jack; the 11 jack; wherein; the 8th jack of the 3rd protection converting unit 10 is electrically connected the N line output contact of secondary standard converting unit 7; the 9th jack of the 3rd protection converting unit 10 is electrically connected the PE line output contact of secondary standard converting unit 7; the tenth jack of the 3rd protection converting unit 10 is electrically connected protective ground line PE3; the 11 jack of the 3rd protection converting unit 10 is electrically connected shell protective ground line PE32, and the connection between the jack connects by connecting line or miniature circuit breaker.
Described the 4th protection converting unit 11 comprises four jacks; be respectively the 8th jack; the 9th jack; the tenth jack; the 11 jack; wherein; the 8th jack of the 4th protection converting unit 11 is electrically connected the N line output contact of secondary standard converting unit 7; the 9th jack of the 4th protection converting unit 11 is electrically connected the PE line output contact of secondary standard converting unit 7; the tenth jack of the 4th protection converting unit 11 is electrically connected protective ground line PE4; the 11 jack of the 4th protection converting unit 11 is electrically connected shell protective ground line PE12, and the connection between the jack connects by connecting line or miniature circuit breaker.
The protection converting unit can carry out the device housings zero connection protection, connect protective earthing-neutral conductor protection, connect the different switching of the protection of PE line, ground protection; can be according to actual needs; selection protects converting unit 10 or the 4th to protect converting unit 11 to implement different attended operations to the first protection converting unit 8, the second protection converting unit 9, the 3rd, respectively the first simulation three-phase equipment 2, the single-phase equipment 3 of the first simulation, second is simulated three-phase equipment 4, second and simulates the shell zero connection protection of single-phase equipment 5, connects the protective earthing-neutral conductor protection, connects the protection of PE line, ground protection.
Connect the 11 jack 84 and the 9th jack 82, the shell protective ground line of analog machine can be connected with the PE line by the protection converting unit, separates with N line, protective ground line; Can realize that TN-S connects the protective wire conversion.
Connect the 11 jack 84 and the 8th jack 81, the shell protective ground line of analog machine can be connected with the N line by the protection converting unit, separates with PE line, protective ground line; Can realize TT, the conversion of TN-C zero connection protection.
Connect the 11 jack 84 and the tenth jack 83, the shell protective ground line of analog machine can be connected with the protective ground line by the protection converting unit, separates with N line, PE line; Can realize TT system earth protection conversion.This enforcement can connect with connecting line and also can connect with miniature circuit breaker.
Using method of the present utility model: 1. when the needs IT system, the 11 jack and the tenth jack that connect upper the first protection converting unit 8 get final product; 2. when needs TN-C system, the first jack 61 and the second jack 62 that connect upper level system conversion unit 6, the 11 jack and the 8th jack of the first jack 61 and the 4th jack 64, the first protection converting units 8, the 11 jack and the 8th jack of the second protection converting unit 9 get final product; 3. when needs TN-S system, the first jack 61 and the second jack 62 that connect upper level system conversion unit 6, the first jack 61 and the 3rd jack 63, the first jack 61 and the 4th jack 64, the 11 jack and the 9th jack of the first protection converting unit 8, the 11 jack and the 9th jack of the second protection converting unit 9 get final product; 4. when needs TN-C-S system, the first jack 61 and the second jack 62 that connect upper level system conversion unit 6, the first jack 61 and the 4th jack 64, the 6th jack 72 of secondary standard converting unit 7 and the 5th jack 71, the 6th jack 72 and the 7th jack 73, the 11 jack and the 8th jack of the first protection converting unit 8, the 11 jack and the 8th jack of the second protection converting unit 9, the 11 jack and the 9th jack of the 3rd protection converting unit 10, the 11 jack and the 9th jack of the 4th protection converting unit 11 get final product; 5. when needs TT system; the first jack 61 and the second jack 62 that connect upper level system conversion unit 6; the 11 jack and the tenth jack of the first jack 61 and the 4th jack 64, the first protection converting units 8, the 11 jack and the tenth jack of the second protection converting unit 9 get final product.
Claims (7)
1. device of simulating distribution system conversion; comprise transformer; first; the second simulation three-phase equipment; first; the single-phase equipment of the second simulation; described first; the second simulation three-phase equipment; and first; the single-phase equipment of the second simulation is electrically connected with Circuit Fault on Secondary Transformer respectively; it is characterized in that: also comprise one-level system conversion unit; secondary standard converting unit; the first protection converting unit; the second protection converting unit; the 3rd protection converting unit; the 4th protection converting unit; the neutral point of described transformer is by the working earthing end ground connection of one-level system conversion unit; the N line contact of one-level system conversion unit is simulated single-phase equipment with first respectively; first; the second protection converting unit is electrically connected; and simulate single-phase equipment with second respectively by secondary standard converting unit; the 3rd; the 4th protection converting unit is electrically connected; the PE line contact of one-level system conversion unit is respectively with first; the second protection converting unit is electrically connected; and pass through secondary standard converting unit respectively with the 3rd; the 4th protection converting unit is electrically connected; first; second; the 3rd; the protective grounding ground connection of the 4th protection converting unit; the first simulation three-phase equipment is electrically connected with the first protection converting unit by shell protective ground line; the single-phase equipment of the first simulation is electrically connected with the second protection converting unit by shell protective ground line; the second simulation three-phase equipment is electrically connected with the 3rd protection converting unit by shell protective ground line, and the single-phase equipment of the second simulation is electrically connected with the 4th protection converting unit by shell protective ground line.
2. the device of simulation distribution system conversion according to claim 1, it is characterized in that: described one-level system conversion unit comprises three keyswitch SB1, SB2, SB3 and three A.C. contactor KM1, KM2, KM3, wherein, A.C. contactor KM1 connects input power by keyswitch SB1, A.C. contactor KM2 connects input power by keyswitch SB2, A.C. contactor KM3 connects input power by keyswitch SB3, the normal opened contact K1 of A.C. contactor KM1 is located between neutral point and the working earthing line E, the normal opened contact K2 of A.C. contactor KM2 is located between neutral point and the N line contact, and the normal opened contact K3 of A.C. contactor KM3 is located between neutral point and the PE line contact.
3. the device of simulation distribution system conversion according to claim 1, it is characterized in that: described secondary standard converting unit comprises two keyswitch SB4, SB5 and two A.C. contactor KM4, KM5, wherein, A.C. contactor KM4 connects input power by keyswitch SB4, A.C. contactor KM5 connects input power by keyswitch SB5, the normal opened contact K4 of A.C. contactor KM4 is located between the input contact and output contact of N line, and the normal opened contact K5 of A.C. contactor KM5 is located between N line output contact and the PE line contact.
4. the device of simulation distribution system conversion according to claim 1; it is characterized in that: described the first protection converting unit; the second protection converting unit; the 3rd protection converting unit; the circuit structure of the 4th protection converting unit is identical; this circuit structure comprises three keyswitch SB6; SB7; SB8 and three A.C. contactor KM6; KM7; KM8; wherein; A.C. contactor KM6 connects input power by keyswitch SB6; A.C. contactor KM7 connects input power by keyswitch SB7; A.C. contactor KM8 connects input power by keyswitch SB8; the normal opened contact K6 of A.C. contactor KM6 is located between shell protective ground line and the N line contact; the normal opened contact K7 of A.C. contactor KM7 is located between shell protective ground line and the PE line contact, and the normal opened contact K8 of A.C. contactor KM8 is located between shell protective ground line and the protective grounding.
5. the device of simulation distribution system conversion according to claim 1, it is characterized in that: described one-level system conversion unit comprises four jacks, be respectively the first jack, the second jack, the 3rd jack, the 4th jack, wherein, the first jack is electrically connected neutral point, and the second jack is electrically connected N line contact, and the 3rd jack is electrically connected PE line contact, the 4th jack is electrically connected the working earthing end, and the connection between the jack connects by connecting line or miniature circuit breaker.
6. the device of simulation distribution system conversion according to claim 1, it is characterized in that: described secondary standard converting unit comprises three jacks, be respectively the 5th jack, the 6th jack, the 7th jack, wherein, the 5th jack is electrically connected N line input contact, the 6th jack is electrically connected N line output contact, and the 7th jack is electrically connected PE line output contact, and the connection between the jack connects by connecting line or miniature circuit breaker.
7. the device of simulation distribution system conversion according to claim 1; it is characterized in that: described the first protection converting unit; the second protection converting unit; the 3rd protection converting unit; the circuit structure of the 4th protection converting unit is identical; this circuit structure comprises four jacks; be respectively the 8th jack; the 9th jack; the tenth jack; the 11 jack; wherein; the 8th jack is electrically connected N line contact; the 9th jack is electrically connected PE line contact; the tenth jack is electrically connected protective grounding; the 11 jack is electrically connected shell protective ground line, and the connection between the jack connects by connecting line or miniature circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220507433 CN202904967U (en) | 2012-09-29 | 2012-09-29 | Device for simulating distribution network standard conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220507433 CN202904967U (en) | 2012-09-29 | 2012-09-29 | Device for simulating distribution network standard conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202904967U true CN202904967U (en) | 2013-04-24 |
Family
ID=48125606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220507433 Withdrawn - After Issue CN202904967U (en) | 2012-09-29 | 2012-09-29 | Device for simulating distribution network standard conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202904967U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890888A (en) * | 2012-09-29 | 2013-01-23 | 重庆市电力公司教育培训中心 | Device for converting analog distribution network system |
| CN104732847A (en) * | 2015-01-14 | 2015-06-24 | 广东电网有限责任公司电力科学研究院 | Electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform |
| CN104851344A (en) * | 2015-06-16 | 2015-08-19 | 广西职业技术学院 | Device for practicing skill in measuring triode |
-
2012
- 2012-09-29 CN CN 201220507433 patent/CN202904967U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890888A (en) * | 2012-09-29 | 2013-01-23 | 重庆市电力公司教育培训中心 | Device for converting analog distribution network system |
| CN104732847A (en) * | 2015-01-14 | 2015-06-24 | 广东电网有限责任公司电力科学研究院 | Electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform |
| CN104732847B (en) * | 2015-01-14 | 2017-04-12 | 广东电网有限责任公司电力科学研究院 | Electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform |
| CN104851344A (en) * | 2015-06-16 | 2015-08-19 | 广西职业技术学院 | Device for practicing skill in measuring triode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105845002B (en) | A kind of low-voltage distribution transformer platform district failure simulation device | |
| CN104091482A (en) | Operation and maintenance simulating training system of smart distribution grid | |
| CN107945608A (en) | Almightiness type power supply station Training in Comprehensive Skills device | |
| CN109697912B (en) | Power distribution network operation and maintenance training system | |
| CN104269090B (en) | The analogue system of a kind of power information acquisition terminal wheel secondary control switch and method thereof | |
| CN202904967U (en) | Device for simulating distribution network standard conversion | |
| CN102097024A (en) | Distribution room safety simulation training system | |
| CN203217812U (en) | Intelligent power terminal installation and maintenance cabinet | |
| CN107356830B (en) | Simulation transformer training device | |
| CN104835396A (en) | Simulation system based on anti-electric-larceny skill training | |
| CN102222438B (en) | Dynamic simulation experiment device for researching dynamic characteristic of direct current (DC) transmission system | |
| CN102890888B (en) | Device for converting analog distribution network system | |
| CN203630997U (en) | Intelligent substation hybrid simulation training system | |
| CN204576923U (en) | Investigation of visiting one house after another program-controlled analog device | |
| CN108597291A (en) | A kind of matching net wire loss simulation training system | |
| CN101567141B (en) | Training device for low-voltage metering and electricity-stealing prevention | |
| CN105513903A (en) | Debugging platform of circuit breaker | |
| CN210574570U (en) | A power supply training equipment | |
| CN108663592A (en) | It is a kind of to towed SVG modular debuggings platform and method | |
| CN201576285U (en) | 10KV typical customer power distribution room simulation training system | |
| CN103500529B (en) | Power electronic digital-analog hybrid system for technical skill training | |
| CN201465383U (en) | Low-voltage measurement electricity anti-stealing training device | |
| CN206023362U (en) | Double loop power supply socket apparatus for fast switching | |
| CN101763758A (en) | Relay protection wiring comprehensive operation training system | |
| CN202352219U (en) | Analog simulation and experiment system of transformer substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20140813 |
|
| RGAV | Abandon patent right to avoid regrant |