Pole Mounted RTU/Ftu Controller-Recloser Control

Product Description

General Introduction of Pole Mounted Intelligent Recloser Control

The outdoor intelligent controller adopts mature and advanced technologies from Japan, South Korea, and the United States. It is a new generation of intelligent control terminal developed to meet the needs of the rapidly developing intelligent distribution network for terminal switching equipment. It is an important equipment for realizing outdoor feeder automation.

Intelligent controllers are based on microprocessor principles and provide protection, control, monitoring, instrumentation and metering to circuits, with integrated input and output logic, data logging and fault reporting. Outdoor switching equipment suitable for 10kV-40.5kV, with primary and secondary integration, including: vacuum circuit breakers, SF6 circuit breakers, SF6 load break switches, interconnection switches, sectionalizing load break switches, boundary load break switches, etc.

The intelligent controller has the functions of short circuit, overcurrent, overvoltage, undervoltage, phase loss, single-phase grounding, inrush current suppression, cold load starting suppression, breaking, disconnection, high impedance grounding, voltage loss lockout, and load intrusion action suppression (over-current suppression). Current direction protection), automatic reclosing and other protection functions.

Reclosers are used in conjunction with LBS line sectional load switches or LBS (CB) line sectional circuit breakers to achieve feeder automation. Installed at the substation outlet or the branch point of a branch line with a large load, it can quickly and reliably eliminate instantaneous and permanent faults in the main line or branch line before the outlet switch in the substation operates, and can quickly restart after the fault is eliminated. Merge and restore power. It can be installed on ring network lines, radial lines, branch lines and end-user lines.

The controller functions are communicated and accessed through the electrical port to achieve remote connection, and the communication with the master station constitutes a "central control type" distribution network automation system. Without the need for communication and master station, automatic cooperation between switches can also complete feeder automation for full line protection.

The controller has logical functions of centralized and local feeder automation (boundary and relay protection feeder automation, recloser feeder automation, intelligent distributed feeder automation), and can be matched with segmentation point switches and contact point switches to achieve different protections logic function.

Working principle of pole-mounted intelligent switch controller

According to the primary and secondary integrated technology solution for distribution automation, the sampling components use the latest electronic voltage sensors and electronic current sensors. The controller has the ability to collect three-phase current, three-phase voltage, zero-sequence current, and zero-sequence voltage to meet the calculation requirements. Active power, reactive power, power factor, frequency, and the function of measuring electrical energy. The sampling signal is input into the controller in the form of a small voltage signal. A 32-bit high-speed microcontroller is used as the main control chip. 16-bit AD high-precision sampling and calculation It has fast speed and complete protection functions. The new protection functions are completely customized according to the requirements of primary and secondary fusion technology.

Controllers are divided into four categories: sectionalizing load break switch controllers, sectionalizing circuit breaker controllers, boundary load break switch controllers and boundary circuit breaker controllers.

The complete set of sectionalizing load break switches is mainly used at the sectionalizing/contact position of the main line to realize the local automatic isolation function of main line faults and supports voltage-time logic.

Complete sets of sectionalizing circuit breakers are mainly used to meet step difference requirements, can directly remove faulty main lines and large branch links, and have reclosing functions.

The boundary load break switch and boundary circuit breaker mainly realize the function of isolating or removing branch line faults at the end of the user.

The complete set of pole-mounted switch equipment has an adaptive and comprehensive on-site feeder automation function, which does not rely on the main station and communication. Through short circuit/ground fault detection technology, voltage-free opening, fault path adaptation, delayed incoming power closing and other control logic, The adaptive multi-branch and multi-contact distribution network frame realizes local line selection, section positioning and isolation of single-phase ground faults. Cooperates with the one-time closing of the substation outlet switch to realize section positioning of permanent short-circuit faults and transient fault power supply recovery. Cooperate with the secondary closing of the substation outlet switch to achieve automatic local isolation of permanent faults and restoration of power supply in the upstream area of the fault.

Product Features

1. Adapt to the action modes such as radioactive mode, ring network normally closed mode, ring network normally open mode, etc., and can adjust I current, V voltage, C count, T time and other parameters according to the operation requirements to cooperate with each other.
2. It has single-phase grounding and high-impedance grounding protection functions.
3. It has overload protection function.
4. It has phase-to-phase short circuit protection function.
5. It has reclosing function.
6. It has online fault detection function.
7. It has cold load starting suppression function.
8. It has load intrusion action suppression function (overcurrent direction protection).
9. It has the power supply side voltage loss lockout function.
10. It has the function of correcting the deviation of the grounding protection setting value.
11. Fault indication: Displays the phase sequence of the fault and the protection action method, and has a recall function.
12. Real-time detection and measurement: three-phase current, line voltage, phase voltage, zero sequence voltage, zero sequence current, zero sequence phase angle, active power, reactive power, and power factor.
13. Equipped with UPS backup power supply.
14. Communication interface: Remote connection with SCADA or DA system through cable/wireless/optical fiber/modem, RS-232, RS-485, RJ45 and other communication interfaces. Baud rate is 2400bps-128kbps. Supports Modbus and DNP3.0 protocols, and adopts IEC60870-5-101/104 protocol/IEC61850-5 (option) protocol. Support GPRS/CDMA and other communication methods. Can be connected to other station equipment (such as TTU, FTU, DTU, etc.). Reserve the installation location for communication equipment.
15. Local debugging interface: RS232 supports laptops and handheld computers to query measurement data, terminal parameters, settings, alarm data, etc.; set terminal parameters and settings.

16, with three remote functions.

17, IP65 protection level.

Control Box Construction

1,Control box.

2,Operating panel.

3,Mounting bracket.

4,Ground terminal.

5,Power socket.

6,Fuse.

7,Hibernation function switch.

8,Aviation plug connector(control).

9,Aviation plug connector (power supply).

10,Air circulation cooling device.

11,Circulating air vents.

12,Communication cable outlet hole.

Special Customization

The above parameters are typical data; if the existing styles do not meet your specific demands, please contact us for a custom design.We have significant personalized customization development and production skills, allowing us to provide tailored solutions to customers all over the world.