CN207353829U - A kind of centralized phase modifier protective device of adaptive rotor protection site - Google Patents

A kind of centralized phase modifier protective device of adaptive rotor protection site Download PDF

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Publication number
CN207353829U
CN207353829U CN201721435083.2U CN201721435083U CN207353829U CN 207353829 U CN207353829 U CN 207353829U CN 201721435083 U CN201721435083 U CN 201721435083U CN 207353829 U CN207353829 U CN 207353829U
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unit
plug
protection
rotor
bus
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CN201721435083.2U
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Chinese (zh)
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包明磊
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Nanjing SAC Automation Co Ltd
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Nanjing SAC Automation Co Ltd
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Abstract

The utility model discloses a kind of centralized phase modifier protective device of adaptive rotor protection site, including a rear inserted casing, motherboard is installed in the cabinet, power insert, exchange plug-in unit, pressing plate inputs plug-in unit, high-power input plug-in unit, signal outputs plug-in unit, plug-in unit is outputed in tripping, protection calculates plug-in unit, panel module, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter input plug-in unit, power bus is provided on motherboard, number bus, emulation bus, communication bus and human-computer interaction bus, device provides triple-frequency harmonics filter circuit and 20Hz filter circuits improve the precision of protection, rotor ground fault function is optional to match somebody with somebody pouring-in and ping-pong type, light serial interface is also provided, for the communication between rotor ground fault site device.A kind of centralized phase modifier protective device of adaptive rotor protection site of the utility model, can provide complete protection, and provide high-precision triple-frequency harmonics stator ground fault protection and the rotor earth fault protection of flexible configuration for phase modifier.

Description

A kind of centralized phase modifier protective device of adaptive rotor protection site
Technical field
It the utility model is related to a kind of phase modifier protective device, and in particular to a kind of collection of adaptive rotor protection site Chinese style phase modifier protective device, belongs to power system main equipment technical field of relay protection.
Background technology
Synchronous capacitor is the synchronous motor without mechanical load, can be to electric power as a kind of reactive power compensator System provides or absorbing reactive power, improves the power factor (PF) of power grid, stablizes voltage level of power grid.Its regulating power is by system Influence small, high-low voltage ride-through capability is strong, and dynamic maintenance voltage ability is strong, therefore the synchronous capacitor of large capacity will be used in In power grid.Due to large-scale phase modulation unit System Reactive Power is adjusted play the role of it is important, it is necessary to have adaptable highly reliable therewith The protective relaying device of property and sensitivity.
Current phase modifier unit both domestic and external is generally protected without dedicated phase modifier protective device, protection using transformer unit The mode that protection unit replaces, its relaying configuration are complicated, it is impossible to the characteristics of well adapting to phase modifier.
Utility model content
The technical problems to be solved in the utility model is to solve the shortcomings of the prior art, there is provided a kind of relaying configuration Simply, the adaptive rotor protection site for the characteristics of possessing high reliability and sensitivity, can be good at adapting to phase modifier Centralized phase modifier protective device.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of centralized phase modifier protective device of adaptive rotor protection site, including cabinet, the interior peace of the cabinet Equipped with motherboard, power insert, exchange plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal output plug-in unit, tripping is outputed Plug-in unit, protection calculate plug-in unit, panel module, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter input Plug-in unit, the motherboard include power bus, number bus, emulation bus, communication bus and human-computer interaction bus, and the power supply is inserted Part outputs plug-in unit, jump by the power bus with plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, the signal of exchanging Lock outputs plug-in unit, protection calculates plug-in unit, panel module, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and pick-up Device input plug-in unit is electrically connected, and the protection calculates plug-in unit and inputs plug-in unit, high-power defeated by the number bus and the pressing plate Enter plug-in unit, signal outputs plug-in unit, tripping output plug-in unit and transmitter input plug-in unit be connected, it is described protection calculate plug-in unit pass through institute State emulation bus and be connected with plug-in unit, rotor ground fault plug-in unit and stator grounding plug-in unit is exchanged, the interface communication plug-in unit passes through institute State communication bus with the protection calculating plug-in unit to be connected, the panel module is led to by the human-computer interaction bus and the interface News plug-in unit is connected, and the power insert, exchange plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal are outputed plug-in unit, jumped Lock outputs plug-in unit, protection calculates plug-in unit, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter input are inserted Part is both connected on the motherboard, and the panel module is installed on cabinet front portion and is connected on motherboard.
The power insert, exchange plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal output plug-in unit, trip and open It is defeated to go out plug-in unit, protection calculating plug-in unit, panel module, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter It is rear loading type plug-in unit to enter plug-in unit.
The height of the cabinet uses 4U, 6U or 8U.
The exchange plug-in unit includes 3 triple-frequency harmonics filter circuits.
The rotor ground fault plug-in unit is using pouring-in rotor ground fault circuit or uses ping-pong type rotor ground fault circuit.
The rotor ground fault plug-in unit includes light serial interface.
The beneficial purpose of the utility model is:1) the utility model can provide the phase modifier defencive function of a full set, in time Cut off failure, it is ensured that phase modifier unit safety is reliably run;2) the utility model using user oriented, towards product, towards The embedded platform technology of application, is applicable in broader voltage range, can be in the phase modulation of different voltages grade, different running environment Installed and used in machine unit.3) triple-frequency harmonics filter circuit provided by the utility model can improve interturn protection and triple-frequency harmonics The input precision of stator ground fault protection, prevents malfunction caused by stator grounding injection source;4) it is provided by the utility model pouring-in Stator ground fault protection supports stator insulation detection when phase modifier is shut down, it is ensured that unit safety;5) provided by the utility model turn Son ground connection plug-in unit supports the rotor earth fault protection of two kinds of principles, and interface compatibility, principle is complementary, wherein pouring-in principle supports phase modulation Rotor insulation detection when machine is shut down, ping-pong type principle provide earth point position detecting function;6) light provided by the utility model Serial interface and transmitter input interface can be communicated with rotor ground fault site device, and the site of adaptive rotor protection is matched somebody with somebody Put, application is more flexible.
Brief description of the drawings
Fig. 1 is the chassis structure chart of the utility model;
Fig. 2 is the card address schematic diagram of the utility model;
Fig. 3 is the plug-in unit annexation figure of the utility model;
Fig. 4 is the hardware system frame diagram of the utility model;
Fig. 5 is that double protections of the utility model calculate the schematic diagram that interlocking loop is exported during plug-in unit concurrent working;
Fig. 6 is the layout of the utility model front panel.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings, following embodiments are only used for clearly illustrating this The technical solution of utility model, and the scope of protection of the utility model cannot be limited with this.
A kind of centralized phase modifier protective device of adaptive rotor protection site, the guarantor for large-scale phase modulation unit Shield, and can adaptively rotor protection site configure.As shown in Figure 1, the height of cabinet uses 4U, 6U or 8U, it is excellent here It is 482.6mm × 255.0mm × 354.0mm to elect as the rear inserted casing of a 8U, casing structure size, is provided with cabinet Motherboard, power insert, exchange plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal output plug-in unit, plug-in unit is outputed in tripping, Protection calculates plug-in unit, interface communication plug-in unit, panel module, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter input plug-in unit, Its card address as shown in Fig. 2, power insert, exchange plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal output it is slotting It is defeated that part, tripping output plug-in unit, protection calculating plug-in unit, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter Enter plug-in unit to be both connected on motherboard, panel module is installed on cabinet front portion and is connected on motherboard.
As shown in figure 3, motherboard includes power bus, number bus, emulation bus, communication bus and human-computer interaction bus, Power insert outputs plug-in unit, tripping by power bus with plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal is exchanged Output plug-in unit, protection calculates plug-in unit, panel module, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter Input plug-in unit is electrically connected, and protection calculates plug-in unit and outputed by number bus and pressing plate input plug-in unit, high-power input plug-in unit, signal Plug-in unit, tripping output plug-in unit and transmitter input plug-in unit be connected, protection calculate plug-in unit also by emulation bus with exchange plug-in unit, Rotor ground fault plug-in unit and stator grounding plug-in unit are connected, and interface communication plug-in unit calculates plug-in unit with protection by communication bus and is connected, Panel module is connected by human-computer interaction bus with interface communication plug-in unit.
As shown in figure 4, protection cabinet calculates plug-in system using double protections, exchange plug-in unit, rotor ground fault plug-in unit, stator connect Ground plug-in unit and transmitter input plug-in unit by the electric current adopted, voltage be converted to small voltage signal and it is low-pass filtered after respectively into Enter protection and calculate plug-in unit 1 and protection calculating plug-in unit 2.Small voltage signal carries out relay protective scheme fortune after AD conversion, into processor Calculate and outlet is tripped, while complete logout, the communication with interface communication plug-in unit.Share 2 block protections and calculate plug-in unit, plug-in unit is adopted With embedded platform technology.It is identical plug-in unit that protection, which calculates plug-in unit 1 and protection calculating plug-in unit 2, is respectively provided with independent AD ALT-CH alternate channel, definite value program storage area, can individually carry out protection calculating.Protection calculates plug-in unit 1 and protection calculates plug-in unit 2 and is arranged to Integral concurrent working after double plug-in unit masters.Outlet tripping plate is equipped with interlocking loop, as shown in figure 5, when protection calculates plug-in unit 1 and protection Calculate 2 concurrent working of plug-in unit when, only protection calculate plug-in unit 1 and protection calculate plug-in unit 2 at the same time export hair trip signal, trip after Electric appliance could start.
Share 4 blocks of exchange plug-in units, there is provided 22 current transformers and 16 voltage transformers, are respectively connected to phase modifier generator terminal Three-phase current, phase modifier neutral point three-phase current, main transformer high-pressure side casing three-phase current, 1 side three-phase current of main transformer high pressure, main transformer 2 side three-phase current of high pressure, excitation-transformation variable high-pressure side three-phase current, excitation low pressure side three-phase current, neutral point of main transformer zero-sequence current, Main transformer high-pressure side three-phase voltage, phase modifier generator terminal three-phase voltage, interturn protection dedicated three-phase voltage, phase modifier generator terminal zero-pressure, tune Camera neutral point zero-pressure, phase modifier longitudinal zero voltage and main transformer high-pressure side residual voltage.
4th block of exchange plug-in unit further includes 3 triple-frequency harmonics filter circuits, can filter out 20Hz signals, prevent stator grounding from noting Enter interturn protection caused by source and the malfunction of triple-frequency harmonics stator ground fault protection.
Share 1 block of stator grounding plug-in unit, there is provided injected type stator ground protection function, can input injected type stator ground connection electricity Pressure, injected type stator earth current, and the function of 20Hz signals filtering is provided.
Share 1 block of rotor ground fault plug-in unit, there is provided rotor earth fault protection function, can input rotor windings just, rotor windings bear With big axis, pouring-in rotor ground fault circuit or ping-pong type rotor ground fault circuit can be matched, both interfaces are completely compatible.Rotor Ground connection plug-in unit can also provide light serial interface, the communication being used between rotor ground fault site device.
Share 2 pieces of trippings and output plug-in unit, there is provided contact is outputed in 22 trippings, is respectively that 2 groups of high jumps press 1 side breaker to connect Point, 2 groups of high jumps press 2 side circuit breaker contact points, 2 groups of 1 side breaker failure contacts of startup high pressure, 2 groups of 2 side breakers of startup high pressure to lose Clever contact, 2 groups of jump degaussing switch contacts, 2 groups of jump SFC contacts and 10 groups of trippings are spare.
Share 1 block pressur plate input plug-in unit, there is provided 20 hard pressing plates of protection, input the hard pressing plate of phase modifier main protection, encourage respectively Magnetic variation protects hard pressing plate, the hard pressing plate of phase modifier voltage protection, the hard pressing plate of fundamental wave stator grounding, triple-frequency harmonics stator grounding to press firmly Plate, injected type stator are grounded hard pressing plate, phase modifier open machine protect hard pressing plate, the hard pressing plate of phase modifier wrongly energized protection, phase modifier its He protects hard pressing plate, switching value 1 to protect hard pressing plate, switching value 2 to protect hard pressing plate, switching value 3 to protect hard pressing plate, switching value 4 to protect Protect hard pressing plate, the hard pressing plate of main transformer differential protection, the hard pressing plate of main transformer back-up protection, the hard pressing plate of breaker fracture flashover, The hard pressing plate of non-whole phase protection and 3 spare pressing plates.
3 blocks of high-power input plug-in units are shared, 12 forceful electric power are provided altogether and are opened into respectively SFC closes position position contact, high pressure 1 Side breaker jump position, 2 side breaker of high pressure jumps position, field switch closes position position contact, stator injection source abnormality alarming open into, open Amount 1 protection in pass opens to open to open to open into, the protection of switching value 4 into, the protection of switching value 3 into the protection of, switching value 2 to differ into, 1 side three-phase of high pressure Cause open into, 2 side unbalanced three-phase lines of high pressure open into 1 it is spare open into.
Share 2 block signals and output plug-in unit, export 14 groups of signals altogether, the secondary contact of every group of signal 3, is respectively phase modifier main protection Action, phase modifier back-up protection action, main transformer main protection action, main transformer back-up protection action, excitation-transformation variable protection are dynamic Work, overload, operation exception, plant failure, alarm signal prompting relevant people is sent when system operation exception or abnormal device Member's processing.
As shown in fig. 6, panel module includes touching liquid-crystal display screen, ethernet communication mouth, signal reset button and signal Lamp.
The precise work current scope of the current transformer of device is 0.04A~200A, and the range of linearity of voltage transformer is 0.4V~200V, the rated voltage of power insert is 65V~260V.
The transmitter input plug-in unit of device can change 4~20mA transducer signals and resistance signal, by replacing plug-in unit 75mV transducer signals can be changed.
The above is only the preferred embodiment of the utility model, it should be pointed out that:For the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and Retouching also should be regarded as the scope of protection of the utility model.

Claims (6)

  1. A kind of 1. centralized phase modifier protective device of adaptive rotor protection site, it is characterised in that:It is described including cabinet Motherboard is installed in cabinet, power insert, exchange plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal output plug-in unit, Plug-in unit is outputed in tripping, protection calculates plug-in unit, panel module, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and change Device is sent to input plug-in unit, the motherboard includes power bus, number bus, emulation bus, communication bus and human-computer interaction bus, institute Power insert is stated to output with plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, the signal of exchanging by the power bus Plug-in unit, tripping output plug-in unit, protection calculates plug-in unit, panel module, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding and inserts Part and transmitter input plug-in unit are electrically connected, the protection calculate plug-in unit by the number bus and the pressing plate input plug-in unit, High-power input plug-in unit, signal output plug-in unit, plug-in unit is outputed in tripping and transmitter input plug-in unit is connected, and the protection, which calculates, inserts Part is connected by the emulation bus with plug-in unit, rotor ground fault plug-in unit and stator grounding plug-in unit is exchanged, and the interface communication is inserted Part calculates plug-in unit with the protection by the communication bus and is connected, and the panel module passes through the human-computer interaction bus and institute State interface communication plug-in unit to be connected, the power insert, exchange plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal are outputed Plug-in unit, tripping output plug-in unit, protection calculates plug-in unit, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter Input plug-in unit is both connected on the motherboard, and the panel module is installed on cabinet front portion and is connected on motherboard.
  2. 2. a kind of centralized phase modifier protective device of adaptive rotor protection site according to claim 1, it is special Sign is:The power insert, exchange plug-in unit, pressing plate input plug-in unit, high-power input plug-in unit, signal output plug-in unit, trip and open It is defeated to go out plug-in unit, protection calculating plug-in unit, panel module, interface communication plug-in unit, rotor ground fault plug-in unit, stator grounding plug-in unit and transmitter It is rear loading type plug-in unit to enter plug-in unit.
  3. 3. a kind of centralized phase modifier protective device of adaptive rotor protection site according to claim 1, it is special Sign is:The height of the cabinet uses 4U, 6U or 8U.
  4. 4. a kind of centralized phase modifier protective device of adaptive rotor protection site according to claim 1, it is special Sign is:The exchange plug-in unit includes 3 triple-frequency harmonics filter circuits.
  5. 5. a kind of centralized phase modifier protective device of adaptive rotor protection site according to claim 1, it is special Sign is:The rotor ground fault plug-in unit is using pouring-in rotor ground fault circuit or uses ping-pong type rotor ground fault circuit.
  6. 6. a kind of centralized phase modifier protective device of adaptive rotor protection site according to claim 1, it is special Sign is:The rotor ground fault plug-in unit includes light serial interface.
CN201721435083.2U 2017-10-31 2017-10-31 A kind of centralized phase modifier protective device of adaptive rotor protection site Active CN207353829U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721435083.2U CN207353829U (en) 2017-10-31 2017-10-31 A kind of centralized phase modifier protective device of adaptive rotor protection site

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721435083.2U CN207353829U (en) 2017-10-31 2017-10-31 A kind of centralized phase modifier protective device of adaptive rotor protection site

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Publication Number Publication Date
CN207353829U true CN207353829U (en) 2018-05-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109149594A (en) * 2018-08-28 2019-01-04 国网湖南省电力有限公司 A kind of optimization method of direct current receiving end phase modifier open-phase operation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109149594A (en) * 2018-08-28 2019-01-04 国网湖南省电力有限公司 A kind of optimization method of direct current receiving end phase modifier open-phase operation

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