Category: Hitachi

Managing Grid Assets in the Digital Substation

So how can you control the grid in a way that improves reliability and keeps the cost of power low? With limited capital budgets, the

utilities must make choices related to long-term expenditures.

These choices include

 Considering all relevant factors, determining which projects minimize risk

 Determining which www.cniacs.com aging equipment assets can more cost-effectively reduce risk

 determining whether additional capital expenditures can be justified to regulators or other stakeholders.

Regulators or other stakeholders

 Determine the most efficient way to deploy resources during an outage

Process bus digital communication standards support interoperability between IEDs from different vendors and “digitize” modern substations.

When process bus devices are properly configured according to the IEC 61850 standard, they provide fast, reliable and secure communications that

to support device protection, remote monitoring and remote control. Process buses can also provide control centers with situational awareness based on accurate and timely measurement data from all corners of the grid.

control center situational awareness based on accurate and timely measurement data from all corners of the grid. By connecting the data to the APM application, the data enables coordination between transmission sections and between transmission and distribution operators.

Applications

Separable cable connectors with shield are used for 12-24 kV XLPE-insulated single- or three-core cables with aluminum or copper conductors. They are suitable for use in standardized bushings with an A-type outer cone according to EN 50181.

Standards

– GB/T12706.4

– IEC 60502.4

Features

– Elbow cable connectors CSEB and straight cable connectors CSS-B are made of EPDM rubber with three layers: conductive inner layer, insulating layer and conductive outer layer.

The three layers of rubber are vulcanized to make the interface between the layers as perfect as possible. It has good UV, ozone and tracking resistance and is suitable for outdoor use.

The capacitance test points of the connectors are covered by conductive rubber caps to ensure complete shielding.

– Supplied in a three-phase kit including crimped cable lugs, terminal block, installation tool and ground wire, designed to ensure reliable installation

– Single- or three-conductor cable grounding kit must be used (can be ordered separately)

Pre-assembled shielded detachable connectors

Applications

Preformed shielded breakaway connectors for 12kV XLPE insulated single or three core cables with aluminum or copper conductors. Suitable for EN 50181 Type C interface

Standard

– GB/T12706.4

– IEC 60502.4

Features

– Pre-molded shielded separable connectors are made of EPDM www.cniacs.com rubber with three layers: conductive inner layer, insulating layer and conductive outer layer.

The three layers of rubber are vulcanized to make the interface between the layers as perfect as possible. It has good resistance to UV, ozone and tracking.

– Supplied in three-phase kits with crimped cable lugs, stress-graded adapters designed to ensure reliable installation

– Single- or three-pole cable grounding kit must be used (can be ordered separately)

Cold Shrink Fittings JS-A 12-42 kV

Application

Cold-shrinkable joints for 12-42 kV XLPE-insulated single- or three-core cables with aluminum or copper conductors.

Standards

– GB/T 12706.4

– IEC 60502.4

Characteristics

– The body of the cold shrink fitting is made of liquid silicone rubber, which is water-repellent and erosion-resistant. High elasticity and shrinkage capacity ensures a strong and stable active pressure between the rubber and the cable, which can cope with the expansion or contraction of the cable diameter in the process of changing

Expansion or contraction of the cable diameter under load cycling.

– The strain relief cone, insulation and conductive layers www.cniacs.com are pre-molded together in a one-piece design, eliminating the need for installation tools. This solves problems such as poor bonding between the separate layers and ensures safe operation.

– Unique multi-layer waterproof construction. Waterproof armored tape and resin outer jacket solutions are available

Cable accessories and connectors

GIS Plug-In Terminals

(2# and 3# connections)

TP-A 42 kV, 800 A 7 and TP-A 42 kV, 1250 A

GIS plug-in terminals (2# interface)

TP-A 42 kV, 800 A

Applications

GIS plug-in cable termination for XLPE-insulated single- or three-core cables with 42 kV copper or aluminum conductors.

Suitable for standard bushings in 2# inner www.cniacs.com cone GIS switchgear or transformers according to EN 50181.

Standards

GB/T 12706.4

IEC 60502.4

Features

– The cable termination consists mainly of a plug-in contactor, a stress cone and a tail pipe.

– Plug-in contactor

– Compression cone connection, safe and reliable

– Easy to install, rigid fixing, no special tools required

– Stress cone

– Compact and portable

– 100% routine testing

– Electrical and safety reliability

– For installation tools, please contact us

Applications

The 520CMD01 Communication Unit is the CMU module of the RTU520 product family.

Its main tasks are

– Managing and controlling the RTU520 I/O modules via the serial I/O bus.

– Reading process events from the input modules.

– Sending commands to the output modules.

– Communication with the control system and the local HMI system via the serial interface (RS232) and the Ethernet 10/100BaseT interface.

– Communicates with sub RTUs, IEDs or multimeter devices via interface (RS485).

Communicates with sub-RTUs, IEDs, or multimeter devices through an interface (RS485).

– Manages the time base station and synchronisation I/O modules of the RTU520 product line.

– Handles the dialogue between the RTU520 product line via the LAN interface and the RTU520 product line via the LAN interface and a web browser.

The communication unit is mounted on a DIN rail together with the power supply and I/O modules.

The communication unit handles www.cniacs.com communication protocols based on Ethernet and UART characters.

The unit is available in two versions

– R0001: Real-time clock without battery buffer (RTC)

– R0002: Real-time clock with battery buffer (RTC)

Features

A real-time operating system is implemented by applying the ARM9 controller AT91SAM9260.

520CMD01 is responsible for interface management, event processing, time base and internal database.

The 520CMD01 is responsible for interface management, event processing, time base and internal database. The controller acts as a master for the serial I/O bus (WRB).

System-related configuration files are stored on a non-volatile flash memory card (Removable SD Card™).

to ensure that the system configuration is valid after a power-on reset (PoR).

An optional battery-buffered RTC is used to maintain accurate time in the event of a power failure.

The communication unit provides the following interfaces:

– Communication Port 1 (CP1): RS232C serial interface with RJ45 connector.

– Communication ports 2 and 3 (CP2 and CP3): RS485 serial interface with RJ45 connector.

– Ethernet Interface (E1): 10/100BaseT with RJ45 connector.

– Interface X1 for power supply to the power supply unit 520PSD01.

– Interface X2 for communication with the RTU520 I/O module.

– USB 2.0 device interface for diagnostics and maintenance.

– WRB I/O bus interface for local communication with the I/O module.

DIN rail mounted base module RTU520:

Input voltage: 24 VDC, 20 W

Natural convection cooling

Reverse voltage protection

LEDs for monitoring the output voltage

Available with up to 16 RTU520 IO modules

Efficiency: 85 per cent

Features

The Power Supply Unit 520PSD01 has the following features and functions:

– Natural convection cooling

– Electronic power limiting at the outputs

– Short-circuit protection at the output

– Input overvoltage protection

– Reverse voltage protection on inputs

– Potential-free isolation between inputs and outputs

– LEDs to monitor output voltage

When interacting with the 520CMD01. the www.cniacs.com input voltage (24 VDC) passes through the I/O module.

During power-up, the 520CMD01 switches the 24 V output voltage to the active voltage of the I/O module.

Applications

The Power Supply Unit 520PSD01 generates or switches 24 VDC, ±15 VDC, and 5 VDC for RTU520 systems.

The output power is sufficient to power an RTU520 with up to 16 I/O modules. The input voltage to the power supply unit is 24 VDC.

Applications

The module 520BID01 provides 16 galvanically isolated inputs for up to 16 binary process signals.

The input signals are scanned and processed with a time resolution of up to 1 ms. The input signals can be assigned to processing functions according to configuration rules.

The input signals can be assigned to processing functions according to configuration rules.

The module 520BID01 can process the following www.cniacs.com types of signals or combinations of signals:

– 16 time-stamped single-point messages (SPI)

– 8 time-stamped double-point messages (DPI)

– 2 8-bit digital measured values (DMI8)

– 1 16-bit digital measurement (DMI16)

– 16 integrated totals (max. 25 Hz) (ITI)

– 2 step position information, 8 bits each (STI)

– 2 bit string inputs, 8 bits each (BSI8)

– 1 16-bit bit string input (BSI16)

– or a combination of these signal types

The module is available in two versions (rubrics):

– 520BID01 R0001: Process voltage 24 to 60 VDC.

There are LEDs for each input and a common loop for each of the 8 inputs.

– 520BID01 R0002: Process voltage 110 to 125 V DC.

Each input is signalled by an LED and each of the 8 inputs has a common loop.

Applications

The binary output module 520BOD01 controls 8 binary process signals via relay contacts.

The output signals can be assigned to process functions according to configuration rules.

The module 520BOD01 can process the following types of signals:

– Single or dual command (SCO or DCO), 1-pole or 2-pole outputs, no checksum (n select 1).

– Single or dual commands (SCO or DCO) with 1.5- or 2-pole output, no checksum (1 of n) Single or dual commands (SCO or DCO) with 1.5- or 2-pole output, no checksum (1 of n)

– Adjustment Step Command (RCO), 1 or 2 poles

– Digital Setpoint Command, 8-bit, No Strobe (DSO8)

– Digital setpoint command, 8-bit, no strobe (DSO8) Bit-string output, 1 or 8-bit (BSO1 or BSO8)

Modules allow switching voltages up to 150 V DC or up to 8 A continuous current. 8 A continuous current.

Characteristics

Binary Outputs

The binary outputs are relay contacts.

The 8 outputs are isolated from each other. www.cniacs.com In addition, they are isolated from the internal electronics by means of an optocoupler.

All 8 relay contacts have independent outputs and there are no common circuits.

The command outputs to the process equipment can be executed either directly or in conjunction with the command output monitoring module.

The Command Output Monitoring Module checks the output circuits (1 out of n times). For more details, refer to the Command Output Monitor data sheet.

The following modules with command output monitoring functions are supported:

– 560CIG10

– 560CID11

– 520CSD01

Applications

The 520AID01 module records up to 6 analogue measured values.

The module 520AID01 can process the following types of signals

Signals:

– Analogue measured values (AMI)

– Floating-point measurement information (MFI)

The following measurement ranges can be configured

520AID01 R0001:

– ± 2.5 mA

– ± 5 mA

– ± 10 mA

– ± 20 mA

The following measurement ranges can be configured as

520aid01 r0002:

– ± 1 V DC

– ± 10 V DC voltage

Additional valid ranges and real-time zero signals can be generated beyond these ranges by means of conversions in the communication unit (CMU).

The module is available in two versions (rubrics):

– R0001: Current measurement version

– R0002: Voltage measurement version

Characteristics

Analogue inputs

Basic signal checking and cycle processing functions can be done locally to reduce the burden on the communication unit.

Applications

Analogue control outputs for sequential or closed-loop control, display instruments, measurement recorders, etc,

The analogue output board 520AOD01 can be connected to measuring and recording instruments, etc.

The board 520AOD01 has 2 output channels which can be configured for different voltage or current output ranges.

The module 520AOD01 can process the following types of signals:

– Analogue setpoint commands

– Floating-point setpoint commands

The following output ranges can be configured independently for each channel via on-board switches:

– ± 2.5 mA

– ± 2.5 mA ± 5 mA

– ± 10 mA

– ± 20 mA (4…20 mA) .20 mA)

– ± 1.25 VDC

– ± 2.5 VDC

– ± 5 V DC

– ± 10 V DC

Output formats unipolar, bipolar or real-time zero www.cniacs.com (4 … 20 mA) are configurable via software parameters. 20 mA) can be configured via software parameters.

Characteristics

Analogue outputs

Each output has a digital-to-analogue converter (DAC) for converting digital values into analogue signals. the resolution of the DAC is 11 bits plus sign.

The received output value is stored until a new value is received. The output channels are set to 0 % after powering up or restarting the communication module.

The output channels are isolated from the power supply, but not between the two channels.

Power input

The power required by the module is supplied through the RTU520 I/O bus connector. In addition, 24 VDC (UE) is required (e.g. from the 560PSU40/41).

The UE voltage must be supplied externally and connected to the UE connector.