Substation Automation Monitoring Solution

Overview

In order to assist users in achieving safe operation and comprehensive management of power transformation, distribution, and consumption in user substations (usually with voltage level of 35kV and below), Acrel provides:
● Wireless Temperature Monitoring System
● APD series UHF Partial Discharge Detector
● Medium Voltage Protection relay
● Power Quality Monitor Device
● Arc Flash Protection Relay
The monitoring scope includes substation, switching station and low-voltage distribution room.

Applicaiton Scenarios

● Data Center
● Airport
● Petrochemical
● Steel Coal Mine
● Machine Made
● Industrial Park

● Biopharmaceutical
● Highway
● Water Conservancy And Water Affairs
● Steel Coal Mine
● Achitechive
● New Energy

Structure

Rated Products

Wireless Temperature Monitoring System

ATE/NTC/PT100 Temperature Sensors
ATC/ASD/ARTM/ATP Temperature Receivers/Displays
Acrel-2000T series Acrel-2000T series

Overview

Partial discharge phenomenon in switchgear:
● Partial discharge in electrical equipment is accompanied by a series of factors such as electricity, light, sound, and heat The occurrence of physical phenomena, therefore, the partial discharge monitoring methods for high-voltage switchgear are all based on detecting these Physical quantities that can reflect the phenomenon of partial discharge are expanded.

● The insulation strength and breakdown field strength of power equipment insulators are very high, when partial discharge is very smallWhen it occurs within the range of, the breakdown process will be rapid and there will be a rising edge during the breakdown processSteep partial discharge pulse current with a rise time of ns level and an excitation frequency of up to several GHzElectromagnetic wave signal of. Therefore, ultra-high frequency sensors can be used to monitor the internal partial discharge current of electrical equipmentThe excited electromagnetic wave signal evaluates the partial discharge situation of the switchgear.

Products

图片19f63

UHF sensor

● Bandwidth：300MHz~1600MHz Effective

● height：≥10.5mm

● Interface：SMA

● Connecting cables：Coaxial cable

● Protective class：IP65

● Installation：Magnetic

图片17umt

APD100 UHF Partial Discharge Detector

● Power supply：DC10~30V，≤3W

● Number of channels：One

● Measuring range：-60dBm~+10dBm

● Measurement content：Discharge amplitude and frequency

● Connecting cables：Coaxial cable；

● Matching impedance：50Ω

● Relay output：1 circuit normally open relay，5A/AC250V，5A/DC30V

● Communication interface：RS485 * 1、Lora * 1

● Installation：35mm guide rail installation

图片18stl

APD200 UHF Partial Discharge Detector

● Power supply：AC/DC220V，≤3W

● Number of channels：One

● Measuring range：-60dBm~+10dBm

● Measurement content：Discharge amplitude and frequency

● PRPD, PRPS

● Phase synchronization：Internal synchronization (AC power)

● Discharge type recognition：Free metal particle discharge, suspended potential discharge, insulation air gap discharge/pollution discharge, corona discharge

● Connecting cables：Coaxial cable

● Matching impedance：50Ω

● Communication protocol：RS485 * 1、USB-C * 1

● Relay output：1 circuit normally open relay；5A/AC250V，5A/DC30V

● Installation：35mm guide rail installation

System Networking

Medium Voltage Protection relay

Overview

When a severe fault(such as short circuit) occurs within the power system that threatens the operation of the system, the device can quickly and correctly cut off the fault circuit or electrical equipment to limit the expansion of the accident and ensure the normal operatin of other parts;

When abnormal operation mode occurs within the system, the device can automatically send a warning signal to inform the personnel on duty to deal with it

Function

Make sure the power system can effectively deal with the faults and minimize losses

Protection relays are generally classified by the protected objects. The common protection devices on users’side projects include main transformer protection, circuit protection, transformer protection, motor protection, PT protection, busbar protection, capacitor protection, standby automatic switching protection, etc.

Resource comparison

AM5SE

AM5SE

AM5SE

	Properties	AM5SE	AM3SE	AM2SE
Power Collection	Protection Current	3 circuits	3 circuits	3 circuits
	Measurement Current	3 circuits	N/A	N/A
	Zero-sequence Current	2 circuits	2 circuits	1 circuit
	Bus Voltage	3 circuits+spare 2 circuits	3 circuits	3 circuits
	Zero-sequence Voltage	1 circuit	3 circuits	3 circuits
	4-20mA Output	2 circuits optional	N/A	N/A
	DC Current Measurement	N/A	N/A	N/A
Input and Output	DI	20 circuits	11 circuits	8 circuits
Input and Output	DO	10 circuits	5 circuits	5 circuits
Communication	RS485 Communication Interface	2 circuits	1 circuit	1 circuit
	RS232 Maintenance Interface	1	N/A	N/A
	IRIG-B Timing Interface	A	A	N/A
	USB Upgrade Interface	A	N/A	N/A
	RJ45 Network Interface	2 circuits optional	N/A	N/A
Operation Circuit	Operation Circuit	A	N/A	N/A
Operation Circuit	Anti-trip Function	Built-in	Anti-trip module optional	Anti-trip module optional

Resource comparison

Product selection points:
1.Use cabinet type according to the project;
2.According to the project application scenario;
3.According to the project protection function requirements;
4.Comprehensive consideration of project cost.

Protecition Function	AM5SE	AM3SE	AM2SE
Main transformer differential protection	√	×	×
Main transformer backup protection	√	×	×
Three-stage overcurrent with direction and voltage lockout	√	×	×
Three-stage overcurrent	--	√	√
Zero-sequence overcurrent	√	√	√
Over-voltage, low-voltage protection	√	√	√
High-power motor differential protection (>2000kW)	√	×	×
High-voltage motor integrated protection	√	×	×
High voltage single bus system incoming line/bus coupler backup automatic switching function	√	×	×
PT parallel function	√	×	×
Non-electricity protection (temperature, gas)	√	√	√
Grid connection reverse power protection	√	×	×
Check synchronization function	√	×	×
Electrical parameter measurement function	U,I,f,P,Q,PF,Ep,Eq,Es

Solution

• Ring main unit protection scheme

● AM2SE Protection relay

Applicable scenario	Installation method	Main function
10kV/6kVResidential projects,construction projects(commercial, hotel, municipal, etc.), etc	Embedded installation, snap fixing.	[50/51]Three-stage overcurrent ; [50N/51N]Zero-sequence overcurrent protection (3 stages earth fault); [59]Overvoltage protection ; [27]Under voltage protection [81U]Under frequency ; [26/63]Non-electricity Protection ; Electrical parameter measurement: U,I,f,P,Q,PF,Ep,Eq,Es

● Installation construction

Main view

Slide view

Hole size

● AM2SE Protection relay diagram

• Central cabinet protection scheme

● AM3SE Protection relay

Applicable scenario	Installation method	Main function
Municipal construction, hospitals, schools, hotels, commercial buildings, etc.	Embedded installation, snap fixing	[50/51] Overcurrent , 3stages; [50N/51N]Zero-sequence overcurrent protection (3 stages earth fault); [59] Over voltage protection; [27] Under voltage protection; [81U] Under frequency; [26/63] Non-electricity protection; [79] Auto-reclose; Electrical parameter measurement :U,I,f,P,Q,PF,Ep,Eq,Es

● Installation construction

Main view

Slide view

Hole size

● AM3SE Protection relay diagram case example

●AM5SE Protection relay

Applicable scenario	Installation method	Main function
35kV substation, industrial and mining enterprises, power plants, new energy power generation and other fields	Embedded installation, snap fixing	[67] Overcurrent , 3stages (with direction and voltage lockout); [50N/51N] Zero-sequence overcurrent protection (2 stages earth fault); [59] Over voltage protection; [27] Under voltage protection; [26/63] Non-electricity protection; [25] Check synchronization; [32R] Directional power protection; [ATS] Bus tie protection; [87T] Transformer differential protection of main transformer; Main transformer backup protection; Motor protection; [87M] Motor differential protection; Capacitor protection protection; [VTS] PT supervision and parallel connection;

●AM5SE Protection relay

• Other protection scheme

Application	Model
Incoming line protection —— Line protection device	● AM5SE-F ● AM3SE-I ● AM2SE
Protect the distribution transformer (Capacity less than 2000kVA) —— Transformer protection replay	● AM5SE-T ● AM3SE-I ● AM2SE
Protect the main transformer (Capacity greater than 2000kVA) —— Main transformer differential + Main transformer backup protection replay	● Main functions of AM5SE-D2 （main transformer differential） ● Main functions of AM5SE-TB （main transformer backup）
Protect the motor (power less than 2000kW) —— Motor protection replay	● AM5SE-M
Protect the motor (power greater than 2000kW) —— Motor differential protection relay	● AM5SE-MD
Protect the capacitor —— Capacitor protection replay	● AM5SE-C
Automatic switching protection of standby power supply —— backup automatic switch protection replay	● AM5SE-B
Automatic switching protection of standby power supply —— backup automatic switch protection replay	● AM5SE-IS

Power Quality Monitor Device

APView500
Online monitoring device for power quality

Product Description

The digital universal measuring device APView500 is suited for measuring and displaying electrical quantities of electricity networks. The device measures currents, voltages and power, and displays the individual current/voltage harmonics for assessment of the power quality.

Typical Application

● Continuous monitoring of the voltage quality
● Collection of relevant data for energy management systems
● Collection of relevant data for energy management systems

Device Features

● Monitoring the quality of the voltage
● TFT colour display (800×480) 5.0
● Modbus RTU,Modbus TCP,IEC 61850
● 8 current inputs
● 8 voltage inputs
● 32 GB internal memory
● Flicker measurement
● Sampling rate: 1024 samples/cycle
● Statistical data recorder 90 days @ 1-minute PQDIF file format
● Downloadable from the on-board FTP Server.
● Waveform recordings are in COMTRADE file format,downloadable from the on-board Web Server of FTP Server

Device Features

● Sampling rate of the measuring channels: 51.2 kHz
● Power Frequency
● Magnitude of the Supply Voltage and Current
● Flicker
● Transients, Dips/Swells and Interruptions
● Supply Voltage Unbalance and Current Unbalance
● Flicker measurement
● Sampling rate: 1024 samples/cycle
● Measurement of Over and Under Deviation parameters
● Harmonics and Interharmonics Measurements for Voltage and Current
● Communication:
–Galvanically isolated RS-485 interface,Ethernet interface
–Modbus RTU protocol
–Modbus TCP (10/100 MBit/s)

Monitor Function

• Steady state monitoring

● Measurement of voltage, current, power, energy, etc
● Deviation
● Voltage imbalance/current imbalance
● Harmonic voltage/harmonic current
● Harmonic voltage/inter harmonic current
● Harmonic power/harmonic phase angle/harmonic distortion rate
● High-frequency harmonics
● Voltage Fluctuation and Flicker
● Rapid voltage change

• Transient monitoring

● Swells
● Temporary descent
● Short interruption
● Temporary drop source positioning
● Tolerance curve analysis
Short term interruption: The phenomenon where the root mean square value of the power frequency voltage at a certain point in the power system suddenly drops below 0.1 p.u. and returns to normal after a brief duration of 10ms to 1 min
Voltage sag: The phenomenon where the root mean square value of the power frequency voltage at a certain point in the power system suddenly decreases to 0.1 p.u.~0.9 p.u. and returns to normal after a brief duration of 10ms to 1 min.

• Fault waveform

COMTRADE is a data file format suitable for obtaining transient waveforms and events in power system models
● Deviation
● Frequency deviation
● Voltage swell
● Voltage sag
● Short time interruption of voltage
● Voltage transient

• Record storage

PQDIF format file, compressed file for steady-state data within 2 hours.
● PQDIF data storage
● Data export
● Saving event records

The storage chip has a capacity of 32G and can save real-time monitoring point data. The 1-minute data (including mean, maximum, minimum, 95% probability maximum, and root mean square) can be stored on the device for a maximum of 3 months, and then updated according to the "first in, first out" principle. The PQDIF data type meets the requirements of DL/T 1608 Power Quality Data Exchange Format Specification, and PQDIF data should be able to be stored for 90 days; The PQDIF data and fault recording data recorded by the device can be saved locally through FTP.

Arc Flash Protection Relay

Application

● Industry Sector
● Industry (coal mine/steel/petroleum/chemical/textile)
● Water conservancy and water affairs
● School, Education
● Medical hygiene
● Municipal and industrial parks
● Transportation facilities (airports/train stations/highways)
● Residential and Architectural
● Data Center
● power plant
● Biopharmaceuticals
● New energy
● Semiconductor
● Ships

Scheme Features

Used to protect medium and low voltage switchgear (busbar room, handcart room, cable room)

Advantages

● Fast action time, more advantageous compared to traditional protection systems;
● Adopting dual criteria of arc light and current overcurrent increases reliability and safety;
● Being able to accurately locate the fault point can reduce the time for maintenance personnel to search for the fault point, greatly reducing maintenance time, and ensuring rapid restoration of power supply after accident maintenance.

Advantages

Model	Feature	Main Function	Performance Characteristics
ARB6 Arc Flash Protection Relay Relay	● 30 arc light probes connected ● 4 sets of three-phase current collection ● 3 sets of zero sequence voltage acquisition ● 4 programmable fast trip outlets ● 10 programmable trip outlets ● 2 programmable normally closed outlets ● 5/22 input channels ● 1-way USB ● 1 channel timing interface ● 2-way RS485 ● 3-way Ethernet	● Customize multiple groups of arc protection logic ● Arc light fault location ● Real time self inspection of arc probe and fiber optic link ● Arc light action value can be freely adjusted ● 4 sets of failure protection ● 4 sets of non battery protection ● CT disconnection alarm ● 4 sets of current circuit TA monitoring ● Device fault alarm ● Maintenance status locking ● Supports Modbus RTU/Modbus TCP/IEC103	● Each device can optionally collect 6/12/18/24/30 probes ● The arc probe directly transmits optical signals to the arc protection device through plastic optical fibers ● Single criterion action time 3.8ms, double criterion action time 7.8ms ● High reliability, certified by national authoritative testing institutions
ARB5-M Main control unit	● 20 arc light probes connected ● 4 sets of three-phase current collection ● 11 pairs of programmable trip outlets ● 24 channel input ● 2-way RS485/2-way Ethernet/1-way ● RS232 printing interface/1-way timing ● interface	● Customize multiple groups of arc protection logic ● Arc light fault location ● Real time self inspection of arc probe and fiber optic link ● 4 sets of failure protection ● 4 sets of current circuit TA monitoring ● Non battery protection ● Device fault alarm ● The communication protocol supports Modbus RTU, Modbus TCP, and IEC103, ● Communication protocol supports IEC61850 and GOOSE input and output (optional)	● Arc light collection board, each equipped with 4 pieces, each piece can collect 5 arc light probes, a total of 20 probes ● The arc probe directly transmits optical signals to the arc control unit through plastic optical fibers
Arc probe ARB-S	● Equipped with light filtering function ● Passive arc light sensor ● Real time self inspection of probe and fiber optic link ● Arc optical fiber: double stranded, flame retardant ● No metal parts, no electrical safety hazards	● Angle ≥ 180° ● Radius ≥ 0.5m ● Sensitivity type: visible light/ultraviolet light

Installation


Busbar Compartment	Circuit Breaker Room	Cable Room