High voltage comprehensive protection measurement and control device (HLM-6600)

One Introduction to Microcomputer Integrated Protection Device

1.Device Overview

1.1Introduction to the device

The new generation of digital protection and measurement devices is suitable for110kVThe protection and measurement of the interval units of the following voltage levels have complete functions of protection, measurement, control, automatic switching of backup power supply and communication monitoring, providing a complete solution for the protection and control of substations, power plants, high and low voltage distribution and plant power systems, which can effectively ensure the safe and stable operation of high and low voltage power grids and plant power systems.Can be used together with other protection and automation equipment,Form an automation system through communication interfaces.All devices can be installed in a centralized manner through screen grouping, or can be installed on-site in high and low voltage switchgear.

Specific functional model division:

1.2Device characteristics

u Adopting a fully sealed structure, it has good seismic and dust resistance performance

u Compact design, small size, light weight, beautiful appearance, easy installation

u Adopting a unique reliability design, with no adjustable components, the device has good stability and strong anti-interference ability

u completeChinese LCD display, clear and easy to understand human-machine interface, extremely convenient operation and setting

u The power supply for the device is dual-purpose AC/DC, and the operating power supply for the device isDC220VIf neededDC110V，AC110V，AC220VPlease specify when placing an order.

u haveRS485Bus serial communication port,And integrated itMODBUSStandard Communication Protocol

u Equipped with event sequence recording function, capable of recording150Event, data is not lost in case of power failure

u Equipped with comprehensive self checking function,Complete exception records, event records, operation records, and all information is maintained in case of power failure

u outsideCompact and fine in shape, with a reasonable structure, using high-grade and high-quality components and multi-layer board technologySMTCraftsmanship enables products to have high electrical performance

u Internally integrated zero sequence current (voltage) synthesis algorithm can be externally applied with zero sequencePT（CT）No additional zero sequence is requiredCT（PT）Implement zero sequence overcurrent voltage protection.

u Adopting precise synthesis algorithm, it can be achieved through pressing buttonsMENUOperate to achieveV-VConnection andYThe type connection method is universal.

u toolThere is a complete circuit breaker operation circuit

u ultra-low power

1.3Reference standards

GB6162-85 Electrical Interference Test for Static Relays and Protection Devices

GB7261-87 Basic Test Methods for Relays and Relay Protection Devices

GB2887-89 Technical Conditions for Computer Station Site

GB 14258-93 Technical Regulations for Relay Protection and Safety Automation Devices

GB 50062-92 Design Specification for Relay Protection and Automation Devices of Power Equipment

DL/T 527-2002 Static Relay Protection Device Inverter Power Supply Technology

IE870-5-103 Standard for Relay Protection Information Interface

GB /T15145-94 General Technical Conditions for Microcomputer Line Protection Devices

GB/T16435.1-1996Remote control equipment and systems and interfaces (electrical characteristics)

GB /T17626.2 Electrostatic Discharge Immunity Test

GB /T17626.3 Radio frequency electromagnetic field radiation immunity test

GB/T17626.4 Electrical Fast Transient Pulse Swarm Immunity Test

GB/T17626.5 Surge impact immunity test

GB /T17626.6 Immunity Test for Conducted Disturbance Induced by Radio Frequency Field

GB/T17626.8 Power frequency magnetic field immunity test

GB /T17626-1998Electromagnetic Compatibility Testing and Measurement Techniques

GB/T14537-1993Shock and collision tests for measuring relays and protective devices

1.4 Device structure

1.4.1structure

Adopting standard chassis, full panel, back plug-in structure, embedded and rear wiring installation method, strong and weak electrical isolation greatly enhances the electrical performance of its product.

1.4.2plugin

The plugin of this device includesCPUPluginsACandTRIPPlugin: Among themCPUThe plugin is the core of the device and is highly integratedCPU,This includesRAMTheFlash MemoryandADWaiting for the functionality of the chip;ACThe plugin includes power supply and analog signal acquisition;TRIPThe plugin includes export, input, and operation circuits.

1.4.2.1 CPU

1）CPUsystem

CPUThe system is powered by a microprocessorCPUTheRAMTheROMTheFlash MemoryWaiting for composition. Including high-performance16Bit microprocessorCPU, large capacityROMTheRAMandFlash MemoryMake theCPUThe module has strong data processing and recording capabilities, which can realize various complex fault handling schemes and record a large amount of fault data. The number of events that can be recorded is not less than500Next time. The protection settings and other operational configuration information are also stored in this memory, and these information will not be lost after the device is powered off.

2）Switching input and output section

The input volume is divided into internal input and external input, with internal input usingDC5VInput: The power is provided by the device power supply itself, and the external input uses a first stage optocoupler to achieveDC220VDirectly input the voltage level.

Open is a relay used to drive the outlet, with a total of2One is a trip relay, and the other is a closing relay.

3)通信部分

This plugin contains a communication speed that is extremely high and has a universal interfaceRS485Bus network chip,RS485The network is the main communication interface for this device to access the system.

4)Clock circuit

Hardware clock circuit is set in the plugin,The clock chip used has high precision,And equipped with a battery to hold in case of power failure.

Besides,CPUThe plug-in adopts multi-layer printed circuit boards and surface packaging technology, with a compact appearance and structure, greatly improving the reliability and electromagnetic interference resistance of the device.

1.4.2.2Input, output, and operation circuits

1)External input circuit: set with8External input circuits are all usedDC220VDirect input method, the device software has taken anti shake measures to avoid sending false messages.

2)Logic relay: Logic relay consists ofCPUPlug in direct drive, this type of relay includes: trip relay, closing relay.

3)Operation circuit:DC220VorAC220To operate the power supply, it consists of various operating circuit trip relays. This includes the tripping position relay（TWJ）Closing position relay（HWJ）Manual tripping relaySTJTrip holding relayTBJClosing and holding relayHBJWait. The adjustment of tripping and closing current is carried out in an adaptive manner, with a range of0.5A～4AThe use of this circuit avoids the trouble of replacing the corresponding relay after changes in the tripping and closing parameters.

1.4.2.3AC/DC circuit

1)DC inverter power supply:DC220VAfter the voltage input passes through the anti-interference filtering circuit,Using the principle of inversion to output the DC voltage required by this device,And adopt floating ground method,Not connected to the casing.

2)Analog quantity acquisition:After the external current is isolated and transformed by an isolation transformer, it is input to the analog-to-digital converter through a low-pass filter,CPUAfter sampling and digital processing, various digital protection relays are constructed, and real-time measurement values are calculated.UATheUBTheUCTheU0TheIATheIBTheICTheI0Terminals are used to protect analog inputs, IaTheIbTheIcTo measure analog input.

1.4.3Human Computer Dialogue Plugin（MMI）

Human computer dialogue（MMI）The main function of the plugin is display protectionCPUThe output information on this plugin is displayed on a four line LCD screen with eight Chinese characters per line. The human-machine interface is clear and easy to understand, and a universal keyboard operation method is configured to make human-machine dialogue and operation convenient and simple. This plugin is also equipped with light indication information, making the operation information of this device more intuitive.

2 Main technical indicators

2.1 Technical Specifications

1） Rated working voltage AC220, DC220V or DC110V (Order notebright)

2） Rated operating circuit power supply DC220V（DC110V AC110V AC220VPlease specify when placing an order

3） Rated technical data

a)AC current: 5Aor1A (Ordering instructions)

b)AC voltage: 400Vor100V (Ordering instructions)

c)frequency 50HZ

4） power consumption

Working power supply: During normal operation,not greater than5W；

When performing protective actions,not greater than10W.

AC current circuit: < 1VA/phase (IN =5A)；

< 0.5VA/phase(IN =1A)；

AC voltage circuit: <0.5VA/phase；

5） Accurate scope of work:

current 0.04In～20In

Voltage: 0.4V～1.2Un

frequency 0.9Fn～1.1Fn

Time: 0～100s

6） Protecting partial accuracy:

a)Fixed value accuracy: ≤±5%；

b)Time accuracy: <±1%Setting time+35ms

c)Whole set action time: ≤35ms；

d)Frequency accuracy: ≤0.01Hz；

6) Accuracy of measurement and control part:

a)Accuracy of communication volume: ≤±0.2%；

b)Active and reactive power: ≤±0.5%；

7) Switch input:

Input type: passive

Number of photoelectric isolation inputs:8

Working voltage: AC220VTheDC220VorDC110V

8) Open contact capacity:

a)Export relay

Rated current carrying capacity of contacts:250Vac/220Vdc,5A

output type: passive(Empty contact point)

b)Signal relay:

Rated current carrying capacity of contacts:250Vac/220Vdc,5A

output type: passive(Empty contact point)

9) communication interface

number: 1

Electrical characteristics: RS485

Transmission method: asynchronous

Communication protocol: MODBUS

Address: 1～99

Baud rate ≤1Mbps

Communication medium: Twisted pair or fiber optic cable

2.2 environmental parameters

2.2.1Electrical environment

a). insulation resistance

Under normal experimental atmospheric conditions,Between the live circuit part of the device and the non live metal and casing,And between various circuits that are not electrically connected,Using open circuit voltage500VMeasure the insulation resistance value with a megohmmeter; Under normal experimental atmospheric conditions,The insulation resistance of each circuit should not be less than100 MOh.

b). Medium strength

Under normal experimental atmospheric conditions,The device can withstand a frequency of50Hz,Test voltage2000Vduration1minThe power frequency withstand voltage test showed no breakdown, flashover, or damage to components.

c). impulse voltage

Under normal experimental atmospheric conditions,The DC input circuit, AC input circuit, and signal output contact of the device can withstand the ground and between circuits(1.2/50)MsShort term impulse voltage test and open circuit test voltage for standard lightning waves5kVNo insulation damage.

d). Pulse group interference

The device can withstandGB/T14598.13-1998( idt IEC60255-22-1:1988)stipulated1MHzand100kHzPulse group interference test. The severity level of the experiment is Grade III,Test voltage common mode2.5Kv,differential mode1kV.

e). Radiated electromagnetic field interference

The device can withstandGB/T14598.9-1995( idt IEC60255-22-3:1989)Radiation electromagnetic field interference test with a severity level of III as specified in the regulations,The experimental field strength is10V/m.

f). Electrostatic discharge interference

The device can withstandGB/T14598.14-1998( idt IEC60255-22-2:1996)The severity level specified in the regulations isIVlevel,The voltage for the contact discharge test is8kVAllowable deviation ±5%,The voltage for air discharge test is15kVAllowable deviation ±5%Static discharge interference test.

g). Fast transient interference

The device can pressGB/T14598.10-1996( idt IEC60255-22-4:1992)The severity level specified in the regulations isIVLevel fast transient interference test,The test voltage is4kV,Allowable deviation ±10%.

2.2.2natural environment

Operating Temperature-25℃～+70℃

Storage temperature:-40～+85℃

Humidity:5～95%RH

2.2.3Mechanical environment

a)Working conditions: able to withstand vibration response and impact response with severity level I;

b)Transportation conditions: able to withstand vibration durability, impact durability, and collision with a severity level of I.