CN205304404U - Visual panorama of intelligent substation relay protection and holographic platform of keeping watch on of stratification - Google Patents

Abstract

The utility model discloses a visual panorama and layered holographic monitoring platform for relay protection of intelligent substations, comprising a display unit, a switch in the platform, a first collection unit, a second collection unit, and a third collection unit, and the display unit is connected with the switch in the platform. The first acquisition unit, the second acquisition unit, and the third acquisition unit all include a processing unit, a storage module, an optical communication module, a GPS clock interface and an I/O interface, and the processing unit is connected to the storage module, the optical communication module, the GPS clock interface and the I/O interface respectively. The I/O interface is connected, and the processing unit is also connected to the SNMP information electrical Ethernet interface and the electrical Ethernet interface of the switch in the platform through the Gigabit Ethernet controller, and the electrical Ethernet interface of the switch in the platform is connected to the switch in the platform. The utility model can collect the online monitoring information of the process layer switch, receive the process layer SV and GOOSE data packets, and prevent the external sending of the process layer SV and GOOSE data packets.

Description

Visual panorama and hierarchical holographic monitoring platform for relay protection of smart substation

technical field

The utility model relates to the field of intelligent/digital substation network intelligent equipment, in particular to a visual panorama and layered holographic monitoring platform for relay protection of smart substations, which is suitable for online monitoring of relay protection of smart substations.

Background technique

The process layer of the smart substation uses optical fiber to transmit standardized SV and GOOSE signals, and the station control layer transmits MMS messages based on IEC61850-8s, which simplifies the secondary system structure of the substation and realizes the interconnection of IED equipment. In smart substations, the secondary cables and secondary circuits of traditional substations no longer exist, the hard pressure plate of relay protection is greatly simplified, and the operation, maintenance and repair methods of relay protection have undergone major changes. Power workers who are accustomed to thinking have encountered great difficulties in the operation and maintenance of relay protection in smart substations. Misoperation accidents often occur during the maintenance process. Therefore, how to extract the signals of smart substations and carry out substation On-line monitoring and analysis to solve the problem of visualization of substation relay protection information during operation and maintenance is an important topic.

Comprehensive intelligent substation relay protection related information, mainly including process layer SV, GOOSE information, process layer switch information, station control layer MMS information, protection devices, merging units, smart terminal power-down alarm hard contact information, process layer switch information It also includes configuration information such as VLAN, mirroring, and priority of the switch, and information such as light intensity, traffic, and frame loss of each port. MMS information at the station control layer includes protection function pressure plate information, alarm information, protection action information, and link disconnection information.

At present, smart substation acquisition devices include fault recorders and network message recording devices. The fault recorder can collect SV and GOOSE messages at the process layer. It is mainly a transient waveform recording and analysis mode. , GOOSE messages, and display them in the form of waveforms; the network message recording and analysis device can collect the MMS information of the station control layer, but it is mainly collected in a passive way, and the collection is carried out through the mirror port of the station control layer switch, that is, on the network Record whatever message is transmitted, and cannot actively interact with the protection device to obtain the current status of the protection device. Moreover, the above two devices do not collect the online monitoring information of the process layer switch, nor solve the problem that the process layer interface does not send SV and GOOSE data packets from the physical circuit.

Utility model content

The purpose of the utility model is to solve the above-mentioned problems existing in the prior art, and provide a visual panoramic and hierarchical holographic monitoring platform for relay protection of intelligent substations, which can realize hierarchical panoramic holographic online monitoring of intelligent substations.

Above-mentioned purpose of the utility model is realized through the following technical solutions:

The visual panoramic and hierarchical holographic monitoring platform for relay protection of smart substations includes a display unit, and also includes a switch in the platform, a first collection unit, a second collection unit, and a third collection unit. The display unit is connected to the switch in the platform.

The first acquisition unit, the second acquisition unit, and the third acquisition unit all include a processing unit, a storage module, an optical communication module, a GPS clock interface and an I/O interface, and the processing unit is connected to the storage module, the optical communication module, the GPS clock interface and the I/O interface respectively. The I/O interface is connected, and the processing unit is also connected to the SNMP information electrical Ethernet interface and the electrical Ethernet interface of the platform switch through the Gigabit Ethernet controller, and the electrical Ethernet interface of the platform switch is connected to the platform switch.

As mentioned above, the first acquisition unit also includes an electrical Ethernet interface for MMS messages of network A and an electrical Ethernet interface for MMS messages of network B, which are respectively connected to the Gigabit Ethernet controller.

The above-mentioned optical communication module includes FPGA and several optical communication sub-modules connected with FPGA, the optical communication sub-module includes MII receiving module, PHY chip, 2-way gate, negotiation flow simulator and optical module, MII receiving module and FPGA connection, the MII receiving module is also connected to the output port of the PHY chip, the SD pin of the PHY chip is connected to the control terminal of the 2-way strobe, one input end of the 2-way strobe is connected to the optical module, and the 2-way strobe The other input end of the switch is connected with the negotiation flow simulator, and the output ends of the two selectors are connected with the receiving serial flow port of the PHY chip.

Compared with the prior art, the utility model has the following beneficial effects:

It can collect online monitoring information of process layer switches, receive process layer SV and GOOSE data packets, and prevent external sending of process layer SV and GOOSE data packets.

Description of drawings

Fig. 1 is the overall structural diagram of the utility model;

Fig. 2 is the schematic diagram of the first acquisition unit;

Fig. 3 is the schematic diagram of the second acquisition unit/third acquisition unit;

Fig. 4 is the schematic diagram before improvement of the optical communication module;

Fig. 5 is an improved schematic diagram of the optical communication module.

detailed description

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Fig. 1 is the overall structure diagram of the utility model, the smart substation relay protection visual panorama and hierarchical holographic monitoring platform, including the first acquisition unit, the second acquisition unit, the third acquisition unit, the switch in the platform, and the display unit. The first collection unit, the second collection unit, and the third collection unit are all connected to the switch in the platform through cables.

Among them, the first acquisition unit is used to collect 220KV-A network SV messages and 220KV-A network GOOSE messages; it is also used to collect SNMP information of process layer switches; it is also used to collect A network MMS messages and B network MMS messages arts.

The second collection unit is used to collect SV messages of 220KV-B network and GOOSE messages of 220KV-B network; it is also used to collect SNMP information of process layer switches.

The third collection unit is used to collect SV messages of 110KV and below C/D networks and GOOSE messages of 110KV and below C/D networks; it is also used to collect SNMP information of process layer switches.

The switch in the platform is connected to the display unit through a cable, and can also be connected to the station-end workstation through a cable; the display unit realizes the real-time display of MMS messages, SV messages, GOOSE messages and SNMP information of the process layer switch, and the display unit is connected through Ethernet remote master.

FIG. 2 is a schematic diagram of the first acquisition unit, and FIG. 3 is a schematic diagram of the second acquisition unit/third acquisition unit.

The first acquisition unit, the second acquisition unit and the third acquisition unit all include a processing unit, a storage module, a GPS clock interface, an I/O interface, an electrical Ethernet interface module and an optical communication module.

The electrical Ethernet interface modules of the first acquisition unit, the second acquisition unit, and the third acquisition unit all include a Gigabit Ethernet controller, an SNMP information electrical Ethernet interface, and an electrical Ethernet interface of a switch in the platform, and the electrical Ethernet interface of the switch in the platform The interface and the SNMP information electrical Ethernet interface are respectively connected to the Gigabit Ethernet controller.

In addition, the first acquisition unit also includes an electrical Ethernet interface for MMS messages of network A and an electrical Ethernet interface for MMS messages of network B respectively connected to the Gigabit Ethernet controller.

A network MMS message electrical Ethernet interface is connected with substation station control layer MMS-A network; B network MMS message electrical Ethernet interface is connected with substation station control layer MMS-B network; the utility model is connected with the above two electrical Ethernet networks The interface exchanges MMS messages with the protection device to obtain the pressure plate status, alarm information, protection action information, online monitoring information, etc. of the protection device.

The SNMP information electrical Ethernet interface is connected to the process layer switch, and based on the SNMP protocol, the process layer switch configuration information, working voltage, and port light intensity, traffic, port frame loss information, etc. are collected.

The first collection unit, the second collection unit, and the third collection unit are respectively connected to the switch in the platform, and forward the collected MMS message, SV message, GOOSE message and SNMP information of the process layer switch to the display unit, station workstation, etc. , to achieve layered panoramic surveillance.

The I/O module collects the power-down hard-contact alarm signal of the protection device, the merging unit, and the intelligent terminal; the GPS clock interface can receive the optical or electrical IRIG-B code clock signal provided by the GPS system in the substation, and can control the first acquisition unit, the second Time calibration is performed on the messages and information collected by the second collection unit and the third collection unit.

The storage modules of the first collection unit, the second collection unit and the third collection unit all include a SV/GOOSE message storage module and a process layer switch SNMP information storage module. The storage module of the first acquisition unit also includes an MMS message storage module.

The optical communication module can include up to 24 100M optical communication sub-modules. As a preferred solution, 1 to 6 optical communication sub-modules support the interchangeability of 100M and 1000M optical modules. When using 1000M optical modules, they can be directly connected to the process layer The mirror port of the switch is suitable for the collection of substation SV networking information; when the 100M optical module is used, it can be connected to point-to-point SV information or GOOSE networking information.

Figure 4 is the schematic diagram of the optical communication module before improvement. In order to ensure that the two ends of the optical communication can be connected, there is a negotiation process between the sending end and the receiving end of the optical communication, which requires the operation of receiving and sending. Therefore, the general standard circuit starts from the processing unit All optical modules must have the realization of the receiving link and the sending link. In order to absolutely ensure that the utility model does not send interference messages to the process layer network, on the basis of the prior art, part A and part B in Fig. 4 are deleted, and part C is added at the same time, as shown in Fig. 5, so from the processing The sending link from the unit to the optical module is physically isolated to ensure that the processing unit cannot send out messages under any circumstances. However, because the sending link is cut off, only the receiving link is reserved, and the link negotiation cannot be completed. When the PHY chip cannot receive the external link negotiation serial stream, the SD pin of the PHY chip will generate a corresponding signal. Connect the SD pin of the PHY chip to the strobe end of the 2-way strobe, and connect the two input ends of the 2-way strobe to the optical module and the negotiation flow simulator respectively. When the PHY chip cannot receive the external link negotiation serial flow due to the cut-off transmission link, the SD pin of the PHY chip outputs a signal to the 2-way strobe, so that the receiving serial flow port of the PHY chip is simulated with the negotiation flow The device is connected, tricking the PHY chip to complete the negotiation process and maintain the connection state.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (3)

1. The visual panorama and hierarchical holographic monitoring platform for relay protection of smart substations, including a display unit, is characterized in that it also includes a switch in the platform, a first acquisition unit, a second acquisition unit, a third acquisition unit, the display unit and the platform switch connection, The first acquisition unit, the second acquisition unit, and the third acquisition unit all include a processing unit, a storage module, an optical communication module, a GPS clock interface and an I/O interface, and the processing unit is connected to the storage module, the optical communication module, the GPS clock interface and the I/O interface respectively. The I/O interface is connected, and the processing unit is also connected to the SNMP information electrical Ethernet interface and the electrical Ethernet interface of the platform switch through the Gigabit Ethernet controller, and the electrical Ethernet interface of the platform switch is connected to the platform switch. 2. The intelligent substation relay protection visualization panorama and hierarchical holographic monitoring platform according to claim 1, wherein the first acquisition unit also includes A network MMS messages connected with Gigabit Ethernet controllers respectively Electrical Ethernet interface and B network MMS message electrical Ethernet interface. 3. The intelligent substation relay protection visualization panorama and hierarchical holographic monitoring platform according to claim 1 or 2, characterized in that, the optical communication module includes FPGA and several optical communication sub-modules connected with FPGA, optical The communication sub-module includes MII receiving module, PHY chip, 2-way strobe, negotiation flow simulator and optical module. The MII receiving module is connected to the FPGA, and the MII receiving module is also connected to the output port of the PHY chip. The SD pin of the PHY chip is connected to the output port of the PHY chip. The control end of the 2-way strobe is connected, one input end of the 2-way strobe is connected to the optical module, the other input end of the 2-way strobe is connected to the negotiation flow simulator, and the output end of the 2-way strobe is connected to the Receive serial stream port connection of the PHY chip.