CN104253487A - Integrated intelligent electronic device of transition layer of intelligent substation - Google Patents

Abstract

The invention provides an integrated intelligent electronic device for the process layer of an intelligent substation, including an analog conditioning module, an input and output module, a monitoring management module, a merging unit module, an intelligent terminal module, and a power supply module; the analog conditioning module and the merging unit The modules are unidirectionally connected, the merging unit module is bidirectionally connected with the intelligent terminal module, the input and output module, and the monitoring management module, and the power supply module is connected with the analog quantity conditioning module, the input and output module, the monitoring management module, and the merging unit The module and the intelligent terminal module are connected in one direction respectively. The invention provides an integrated intelligent electronic device for the process layer of the intelligent substation. The integrated intelligent electronic device meets the IEC61850 protocol, and is mainly used to realize the integration and fusion of the process layer equipment of the intelligent substation, which can reduce the floor area and construction, operation and maintenance of the intelligent substation. Investment to improve the overall benefits of smart substations.

Description

An integrated intelligent electronic device for the process layer of a smart substation

technical field

The invention belongs to the technical field of substation automation, and in particular relates to an integrated intelligent electronic device at the process layer of an intelligent substation.

Background technique

As an important link in the construction of smart grid, the project of smart substation adopts a staged and layered technical scheme to be gradually implemented. According to the IEC 61850 standard, the structure of the smart substation system can be divided into three layers, namely, the station control layer, the interval layer and the process layer. The process layer equipment includes primary intelligent equipment, merging unit and intelligent terminal, and completes substation power distribution, conversion, transmission and related functions such as measurement, control, metering, and status monitoring; the sampling SV network, GOOSE network, and time synchronization network of the process layer Usually discrete networking. The interval layer is equipped with independent measurement and control and protection devices according to the interval of the main equipment unit. It is also equipped with intelligent electronic equipment such as fault recording, backup self-switching, low-cycle load shedding, etc., to realize the priority control of interval data collection, statistical calculation and control commands. , to complete the real-time data collection of the process layer and the network communication with the station control layer. The station control layer includes subsystems such as monitoring, five defenses, telecontrol communication, time synchronization, status monitoring, and online decision-making.

In substations with higher voltage levels, for the sake of reliability, in strict accordance with the requirements of the specification, the scheme of independent and redundant configuration of process layer and bay layer equipment is adopted, with clear layers and clear concepts. However, the scheme of independent configuration of process layer and bay layer equipment for all voltage levels will encounter certain difficulties, especially in the intelligent transformation project of conventional substations, a large number of merging units and intelligent terminals will inevitably be added while replacing equipment And other process layer equipment. For the intervals of medium and low voltage voltage levels, it is generally required to be installed in a decentralized manner, with limited installation space, and complex switches and communication wiring. Compared with before the transformation, due to the addition of more equipment, the economy is not good. Therefore, it is imperative to choose a simpler and more economical configuration scheme for smart substations with medium and low voltage voltage levels.

Contents of the invention

In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides an integrated intelligent electronic device at the process level of a smart substation. overall benefit.

In order to realize the above-mentioned purpose of the invention, the present invention takes the following technical solutions:

The present invention provides an integrated intelligent electronic device for the process layer of an intelligent substation. The device includes an analog conditioning module, an input and output module, a monitoring management module, a merging unit module, an intelligent terminal module, and a power supply module; the analog conditioning module One-way connection with the merging unit module, the merging unit module is bidirectionally connected with the intelligent terminal module, the input and output module, and the monitoring management module, and the power supply module is connected with the analog quantity conditioning module, the input and output module, and the monitoring management module , the merging unit module and the intelligent terminal module are connected in one direction respectively.

The analog conditioning module receives the FT3 signal from the electronic transformer or the small voltage signal converted by the electronic transformer, and after signal conditioning, sends data to the merging unit module through the motherboard in FT3-4 format.

The analog conditioning module receives the FT3 signal from the electronic transformer through the optical cable or receives the small voltage signal converted by the electronic transformer through the double-shielded cable.

The input and output module is connected to 16 digital input signals through cables, and provides 7 digital output signals to external control objects through cables; at the same time, data interaction is performed with the merging unit module through the motherboard using the address data bus.

The monitoring and management module uses a USB interface to connect to the camera, and uses an RS485 bus to connect the permanent magnet mechanism and sensors in other parts of the switch cabinet, and at the same time performs data interaction with the merging unit module through the Ethernet or RS485 bus.

The merging unit module receives the FT3-4 format data transmitted by the analog conditioning module, and performs the reception of the switch input signal and the control of the switch output signal to the input and output module through the address data bus; through Ethernet or The RS485 bus collects and controls the data in the monitoring and management module, and uses the address data bus to interact and control the data with the intelligent terminal module. At the same time, it provides the sampling value in 9-2 format, standard GOOSE information and IEC1588 time synchronization interface.

The intelligent terminal module is connected to the merging unit module through an address data bus, and provides an MMS communication interface, a man-machine interaction interface and a debugging and maintenance interface to the outside.

The power module is connected to a 200V AC and DC power supply, and provides 5V and ±12V power supplies to the analog conditioning module, input and output module, monitoring management module, merging unit module and intelligent terminal module through the power bus.

The address data bus, Ethernet, RS485 bus, MMS communication interface, man-machine interaction interface, debugging and maintenance interface and power bus are connected through the motherboard.

Compared with prior art, the beneficial effect of the present invention is:

The invention mainly utilizes the characteristics of relatively small scale of 35kV intelligent substation, relatively simple primary system and relatively small amount of information in the station, and reduces the types and quantities of intelligent electronic equipment under the premise of following the general technical principles of intelligent substations and meeting the requirements of safe and reliable operation , to achieve the purpose of reducing the construction and operation and maintenance costs of 35kV smart substations, and improving the efficiency of substations, mainly in the following aspects:

At the substation process layer, there are usually discrete devices to realize the functions of merging unit, intelligent terminal, protection, measurement and control, metering, and status monitoring. An intelligent electronic device is integrated to complete the integration, which improves the integration of equipment and reduces equipment investment and operation and maintenance. of complexity. At the same time, due to the tight coupling between the intelligent electronic device and the primary equipment, not only the installation position is closer to the primary equipment, but also the intermediate analog-to-digital conversion and communication transmission link with the electronic transformer is simplified, which realizes the reduction of cost and the improvement of equipment reliability.

Description of drawings

Fig. 1 is a schematic structural diagram of an integrated intelligent electronic device at the process layer of a smart substation in an embodiment of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the present invention provides an integrated intelligent electronic device for the process layer of a smart substation, the device includes an analog quantity conditioning module, an input and output module, a monitoring management module, a merging unit module, an intelligent terminal module and a power supply module; The analog conditioning module is unidirectionally connected to the merging unit module, the merging unit module is bidirectionally connected to the intelligent terminal module, the input and output module, and the monitoring management module, and the power supply module is connected to the analog conditioning module, the input and output module , the monitoring management module, the merging unit module and the intelligent terminal module are respectively connected in one direction.

The analog conditioning module receives the FT3 signal from the electronic transformer or the small voltage signal converted by the electronic transformer, and after signal conditioning, sends data to the merging unit module through the motherboard in FT3-4 format.

The analog conditioning module receives the FT3 signal from the electronic transformer through the optical cable or receives the small voltage signal converted by the electronic transformer through the double-shielded cable.

The input and output module is connected to 16 digital input signals through cables, and provides 7 digital output signals to external control objects through cables; at the same time, data interaction is performed with the merging unit module through the motherboard using the address data bus.

The monitoring and management module uses a USB interface to connect to the camera, and uses an RS485 bus to connect the permanent magnet mechanism and sensors in other parts of the switch cabinet, and at the same time performs data interaction with the merging unit module through the Ethernet or RS485 bus.

The merging unit module receives the FT3-4 format data transmitted by the analog conditioning module, and performs the reception of the switch input signal and the control of the switch output signal to the input and output module through the address data bus; through Ethernet or The RS485 bus collects and controls the data in the monitoring and management module, and uses the address data bus to interact and control the data with the intelligent terminal module. At the same time, it provides the sampling value in 9-2 format, standard GOOSE information and IEC1588 time synchronization interface.

The intelligent terminal module is connected to the merging unit module through an address data bus, and provides an MMS communication interface, a man-machine interaction interface and a debugging and maintenance interface to the outside.

The power module is connected to a 200V AC and DC power supply, and provides 5V and ±12V power supplies to the analog conditioning module, input and output module, monitoring management module, merging unit module and intelligent terminal module through the power bus.

The address data bus, Ethernet, RS485 bus, MMS communication interface, man-machine interaction interface, debugging and maintenance interface and power bus are connected through the motherboard.

The intelligent terminal module communicates with the display module to realize the local human-computer interaction interface, including common operations such as running display, fault display, information query, setting value setting, historical event storage, transmission operation, etc., and its communication mode is Ethernet. The intelligent electronic device is installed locally in the switch cabinet or near the primary equipment, so as to realize the local intelligence of the primary equipment.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims (9)

1. An integrated intelligent electronic device of a smart substation process layer, characterized in that: the device includes an analog quantity conditioning module, an input and output module, a monitoring management module, a merging unit module, an intelligent terminal module and a power supply module; The analog conditioning module is unidirectionally connected to the merging unit module, the merging unit module is bidirectionally connected to the intelligent terminal module, the input and output module, and the monitoring management module, and the power module is connected to the analog conditioning module, the input and output module, The monitoring management module, the merging unit module and the intelligent terminal module are respectively connected in one direction. 2. The integrated intelligent electronic device of the smart substation process layer according to claim 1, characterized in that: the analog conditioning module receives the FT3 signal from the electronic transformer or the small voltage signal converted by the electronic transformer , after signal conditioning, the data is sent to the merging unit module through the motherboard in FT3-4 format. 3. The integrated intelligent electronic device of the smart substation process layer according to claim 2, characterized in that: the analog conditioning module receives the FT3 signal from the electronic transformer through an optical cable or receives the signal through the electronic transformer through a double-shielded cable. The small voltage signal converted by the converter. 4. The integrated intelligent electronic device of the smart substation process layer according to claim 1, characterized in that: the switch input and output module is connected to 16 switch input signals through cables, and outputs 7 switch values through cables The signal is provided to the external control object; at the same time, data interaction is performed with the merging unit module through the motherboard using the address data bus. 5. The integrated intelligent electronic device of the smart substation process layer according to claim 1, characterized in that: the monitoring management module uses a USB interface to connect to the camera, and uses an RS485 bus to connect the permanent magnet mechanism and sensors in other parts of the switch cabinet , and at the same time perform data interaction with the merging unit module through Ethernet or RS485 bus. 6. The integrated intelligent electronic device of the smart substation process layer according to claim 1, characterized in that: the merging unit module receives the FT3-4 format data transmitted by the analog quantity conditioning module, and transmits the data to the open source through the address data bus. The input and output module receives the digital input signal and controls the digital output signal; collects and controls the data in the monitoring management module through the Ethernet or RS485 bus, and uses the address data bus to interact with the intelligent terminal module for data And control, while providing 9-2 format sampling value, standard GOOSE information and IEC1588 time synchronization interface. 7. The integrated intelligent electronic device of the intelligent substation process layer according to claim 1, characterized in that: the intelligent terminal module is connected with the merging unit module through the address data bus, and it provides MMS communication interface, man-machine interaction interface and Debug maintenance interface. 8. The integrated intelligent electronic device of the smart substation process layer according to claim 1, characterized in that: the power supply module is connected to an AC/DC 200V power supply, and provides analog quantity conditioning module, input and output module, The monitoring management module, the merging unit module and the intelligent terminal module provide 5V and ±12V power supplies respectively. 9. The integrated intelligent electronic device of the intelligent substation process layer according to claim 1, characterized in that: the address data bus, Ethernet, RS485 bus, MMS communication interface, human-computer interaction interface, debugging and maintenance interface and power bus connected through the motherboard.