Advancedan na Tagapamahala ng Recloser

Deskripsyon

RWK-65 ay isang intelligent na medium Voltage controller na ginagamit sa overhead line grid monitoring para sa layunin ng overhead line protection. Ito ay maaaring maipakay sa CW(VB) type vacuum circuit breaker upang makamit ang automatic monitoring, fault analysis at i-save ang mga event records.

Ang unit na ito ay nagbibigay ng ligtas na pag-switch ng mga fault sa power grid at nagbibigay ng automatic power recovery. Ang serye ng RWK-65 ay angkop hanggang 35kV outdoor switchgear kabilang ang: vacuum circuit breakers, oil circuit breakers, at gas circuit breakers. Ang intelligent controller ng RWK-65 ay may line protection, control, measurement, at monitoring ng Voltage at current signals na integrated automation at control devices sa labas.

Ang RWK ay isang automatic management unit para sa single way/multi ways/ring network/two power sourcing, na may lahat ng Voltage at current signals at lahat ng functions. Ang column switch intelligent controller ng RWK-65 ay sumusuporta sa: Wireless (GSM/GPRS/CDMA), Ethernet mode, WIFI, optical fiber, power line carrier, RS232/485, RJ45, at iba pang anyo ng komunikasyon, at maaaring ma-access ang iba pang station premises equipment (tulad ng TTU, FTU, DTU, etc.).

Pangunahing pagpapakilala ng function

1. Local Feeder Automation：

1) Adaptive comprehensive type, Ang adaptive comprehensive feeder automation ay nakuha sa pamamagitan ng "voltage loss opening, power delay closing" method, kasama ang short circuit/ground fault detection technology at fault path priority processing control strategy, kasama ang secondary closing ng substation outgoing switches, upang makamit ang fault localization at isolation adaptation ng multi branch at multi connection distribution network structures.   Ang unang closing ay nag-iisolate ng fault section, at ang ikalawang closing ay nagbabalik ng power supply sa walang fault sections.

2) Voltage time type, Ang "voltage time type" feeder automation ay nakuha sa pamamagitan ng pagsasama ng mga katangian ng trabaho ng switch "no voltage opening, power delay closing" kasama ang secondary closing ng substation outgoing switch.  Ang unang closing ay nag-iisolate ng fault section, at ang ikalawang closing ay nagbabalik ng power supply sa walang fault section.  

3) Voltage current time type, Ang voltage current time type ay nagdaragdag ng discrimination para sa fault current at grounding current sa batayan ng voltage time type, sumusunod sa basic logic ng closing sa loob ng X time limit ng power on, detecting residual voltage lockout sa loob ng Y time limit, losing voltage sa loob ng Y time limit pagkatapos ng closing, at detecting fault current lockout at opening.   Sa parehong oras, ito ay may logic ng locking at opening nang walang detection ng fault current sa loob ng Y time limit pagkatapos ng closing, kaya nagpapabilis ito ng proseso ng fault isolation. Kung ang switch ay gumagamit ng spring operated mechanism, ito ay maaaring mabilis na i-isolate mula sa instantaneous faults sa pamamagitan ng pagdaragdag ng power loss delayed opening (kasama ang mabilis na reclosing time ng substation outgoing switch).

2. Protection relay functions:

1) 79 Auto Reclose (Reclose) ,

2) 50P Instantaneous/Definite-Time Overcurrent (P.OC) ,

3) 51P Phase Time-Overcurrent（P.Fast curve/P.Delay curve）,

4) 50/67P Directional Phase Overcurrent (P.OC-Direction mode (2-Forward /3-Reverse)),

5) 51/67P Directional Phase Time-Overcurrent (P.Fast curve/P.Delay curve-Direction mode (2-Forward/3-Reverse)),

6) 50G/N Ground Instantaneous/Definite-Time Overcurrent (G.OC),

7) 51G/N Ground Time-Overcurrent (G.Fast curve/G.Delay curve),

8) 50/67G/N Directional Ground Overcurrent (G.OC- Direction mode (2-Forward/3-Reverse)) ,

9) 51/67G/P Directional Ground Time-Overcurrent (P.Fast curve/P.Delay curve-Direction  mode (2-Forward/3-Reverse)),

10) 50SEF Sensitive Earth Fault (SEF), 

11) 50/67G/N Directional Sensitive Earth Fault (SEF-Direction mode (2-Forward/ 3-Reverse)) ,

12) 59/27TN Earth Fault Protection With 3RD Harmonics (SEF-Harmonic inhibit enabled) ,

13)  51C   Cold Load,

14) TRSOTF Switch-Onto-Fault (SOTF) ,

15) 81 Frequency protection ,

16) 46 Negative- Sequence Overcurrent (Nega.Seq.OC),

17) 27 Under Voltage (L.Under volt),

18) 59 Over Voltage (L.Over volt),

19) 59N Zero-Sequence Over Voltage (N.Over volt),

20) 25N Synchronism－Check,

21) 25/79 Synchronism－Check/Auto Reclose,

22) 60 Voltage unbalance,

23) 32 Power direction, 

24) Inrush,

25) Loss of phase, 

26) Live load block, 

27) High gas, 

28) High temperature,

29) hotline protection.

3. Supervision functions:

1) 74T/CCS Trip & Close Circuit Supervision,

2) 60VTS.   VT Supervision.

4. Control functions: 

1) 86    Lockout, 

2) circuit-breaker control.

5. Monitoring Functions: 

1) Primary/Secondary Phases and Earth Currents,

2) Phases Current with 2nd Harmonics and Earth Current With 3RD Harmonics, 

3) Direction, Primary/Secondary Line and Phase Voltages,

4) Apparent Power and Power Factor,

5) Real and Reactive Power, 

6) Energy and History Energy,

7) Max Demand and Month Max Demand, 

8) Positive Phase Sequence Voltage,

9) Negative Phase Sequence Voltage & Current,

10) Zero Phase Sequence Voltage,

11) Frequency, Binary Input/Output status,

12) Trip circuit healthy/failure,

13) Time and date,

14) Trip, alarm,

15) signal records, Counters,

16) Wear, Outage.

6. Communication functions:

a. Communication interface: RS485X1,RJ45X1

b. Communication protocol: IEC60870-5-101; IEC60870-5-104; DNP3.0;  Modbus-RTU

c. PC software: RWK381HB-V2.1.3,The address of the information body can be edited and queried by PC software,

d. SCADA system: SCADA systems that support the four protocols shown in "b.”.

7. Data Storage functions:

1) Event Records,

2) Fault Records,

3) Measurands.

8. remote signaling remote measuring, remote controlling function can be customized address.

Teknolohiya mga parameter

Struktura ng device

Tungkol sa customization

Ang mga sumusunod na optional functions ay available: Power supply rated at 110V/60Hz,Two three-phase voltage sensors, cabinet heating defrosting device, battery upgrade to lithium battery or other storage equipment, GPRS communication module,1~2 signal indicators,1~4 protection pressure plates, the second voltage transformer, custom aviation socket signal definition.

Para sa detalyadong customization, mangyaring makipag-ugnayan sa salesman.

Q: Ano ang recloser?

A: Ang reclosing device ay isang device na maaaring awtomatikong detektin ang fault current, at awtomatikong hiwalayin ang circuit kapag may fault, at pagkatapos ay gawin ang maramihang reclosing operations.

Q: Ano ang function ng recloser?

A: Ito ay pangunahing ginagamit sa distribution network. Kapag may temporary fault sa line (tulad ng branch touching the line for a short time), ang reclosing device ay nagbabalik ng power supply sa pamamagitan ng reclosing operation, na malaking nagbabawas ng outage time at saklaw at nagpapabuti ng reliability ng power supply.

Q: Paano tinitiyak ng recloser ang uri ng failure?

A: Ito ay naghahanap ng mga katangian tulad ng magnitude at duration ng fault currents. Kung ang fault ay permanent, pagkatapos ng preset number of reclosing, ang reclosing device ay ilo-lock up upang maiwasan ang karagdagang pinsala sa device.

Q: Ano ang mga application scenarios ng reclosers?

A: Ito ay malawakang ginagamit sa urban distribution network at rural power supply network, na maaaring epektibong harapin ang iba't ibang posible na line failures at tiyakin ang stable supply ng power.