Intelligent substation IED (Intelligent Electronic Device) configuration file management and control method based on CRC (Cyclic Redundancy Check) check codes

An intelligent substation and configuration file technology, applied in electrical components, circuit devices, program control devices, etc., can solve problems such as inconvenience for commissioning and acceptance personnel to view the CRC check code, prone to omissions and errors, and no LCD screen configuration. Ensure safe operation, avoid omissions and errors, improve accuracy and efficiency

Inactive Publication Date: 2016-01-06
STATE GRID HEBEI ENERGY TECH SERVICE CO LTD +2
6 Cites 16 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] 1) Since the merging unit, intelligent terminal and integrated intelligent device are generally installed in the outdoor intelligent central control cabinet of the substation, considering the harsh working environment of the substation switchyard, in order not to affect the safe operation of the device, the devices of most manufacturers There is no LCD screen, so it is very inconvenient for debugging and acceptance personnel to check the CRC ch...
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Abstract

The invention relates to an intelligent substation IED (Intelligent Electronic Device) configuration file management and control method based on CRC (Cyclic Redundancy Check) check codes. The method comprises the following steps: connecting all-station IED virtual terminators with a system configuration tool to generate an all-station SCD configuration file including a CRC check code, extracting IED configuration information from the all-station SCD file, and downloading the IED configuration information into a device; powering on a process level IED device, putting the CRC check code into a GOOSE message to be sent, and forwarding the CRC check code to a station level network through an MMS (Multimedia Messaging Service) message after an opposite-end bay level IED receives the message; after the bay level IED device is powered on, transmitting a CRC check code of the bay level IED device to the station level network through the MMS message by the bay level IED device; and receiving the CRC check code from the station level network by a configuration file management module installed in a station level of an intelligent substation, resolving the all-station SCD file, extracting a virtual terminator CRC check code of the IED, and judging whether the two CRC check codes are consistent or not by comparison. Through adoption of the method, checking on whether GOOSE virtual terminator configuration information downloaded into the IED is consistent with corresponding GOOSE virtual terminator configuration information in the all-station SCD file or not can be performed effectively.

Application Domain

Error preventionCircuit arrangements +2

Technology Topic

Multimedia Messaging ServiceGoose +9

Image

  • Intelligent substation IED (Intelligent Electronic Device) configuration file management and control method based on CRC (Cyclic Redundancy Check) check codes
  • Intelligent substation IED (Intelligent Electronic Device) configuration file management and control method based on CRC (Cyclic Redundancy Check) check codes
  • Intelligent substation IED (Intelligent Electronic Device) configuration file management and control method based on CRC (Cyclic Redundancy Check) check codes

Examples

  • Experimental program(1)

Example Embodiment

[0021] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
[0022] As attached image 3 As shown, a smart substation IED configuration file management and control method based on CRC check code includes the following steps:
[0023] (1) Establish its CRC check code model at the GOOSE layer for the intelligent substation process layer IED, and establish its CRC check code model at the MMS layer for the bay layer IED;
[0024] (2) Use the system configuration tool to connect the virtual terminal of the whole station IED, generate the whole station SCD configuration file with CRC check code, use the device configuration tool to extract the IED configuration information from the whole station SCD configuration file, and download it to the device, Wherein, the IED configuration information includes a virtual terminal CRC check code;
[0025] (3) After the process layer IED device is powered on, the CRC check code is sent out in the GOOSE message, and the interval layer IED corresponding to the process layer IED receives the message and passes the CRC check code through the MMS message Forward to the station control layer network;
[0026] (4) After the bay layer IED device is powered on, it directly sends its own CRC check code to the station control layer network through the MMS message;
[0027] (5) The configuration file management module installed in the station control layer of the intelligent substation receives the CRC check code from the station control layer network on the one hand, and parses the SCD configuration file of the whole station on the other side to extract the virtual terminal CRC check code of the IED configuration information, and then The two CRC check codes before and after are compared to judge whether they are consistent.
[0028] To realize the automatic upload and automatic comparison of the CRC check code of the IED virtual terminal, the key point is to use GOOSE and MMS messages to send the CRC code to the receiver, which involves the modeling of the CRC check code in the GOOSE and MMS layer models.
[0029] (1) GOOSE information modeling at the process level
[0030] A data object instance "IEDCRC" is extended in the logical node LLN0 under the GOOSE access point G1 of the IED to store the CRC check code. Since the Q/GDW1396 standard defines the CRC check code as a string of 32 Bits in length, "IEDCRC" uses the IEC61850 public data type INS when modeling.
[0031] (2) MMS information modeling at the station control layer.
[0032] In the logical node LLN0 under the MMS access point S1 of the IED, the extended data object instance "IEDCRC" is used to store the CRC check code. Similarly, the "IEDCRC" uses the IEC61850 public data type INS when modeling.
[0033] (3) After the device is powered on, the CRC check code is sent out in the GOOSE message, and the opposite end interval layer IED will forward the CRC check code to the station control layer network after receiving the message. The configuration file management module installed in the station control layer of the intelligent substation receives the CRC check code from the station control layer network on the one hand, and parses the SCD file of the whole station on the other hand to extract the virtual terminal CRC check code of the IED. Then the two CRC check codes are compared to determine whether they are consistent.

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