Encryption remote control system of power distribution network
A technology of power distribution network and remote control system, which is applied in the transmission system, information technology support system, electrical components, etc., can solve the problems of distribution network automation system waste, hidden dangers of distribution network information security, and difficulty for operators to adapt to work. Small quantity, strengthened safety management work, beneficial to safety effect
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Embodiment 1
[0032] Embodiment 1, based on the above-mentioned upgraded hardware system and software system, the encrypted remote control process of the power distribution network includes:
[0033] Step 1. After the master station initializes the safety protection terminal, the master station sends the public key message and the modulus message to the safety protection terminal;
[0034] Step 2, the master station encrypts the remote control command using the RSA algorithm to form an RSA remote command message and sends it to the security protection terminal;
[0035] Step 3, the security protection terminal uses the public key to decrypt the RSA remote command message and verify the signature; if the signature verification is correct, the security protection terminal sends the decrypted standard IEC60870-5-101 communication protocol or IEC60870 to the FTU terminal -5-104 communication protocol remote control message and reply a confirmation command message to the main station, if the sig...
Embodiment 2
[0037] Embodiment 2, this embodiment adds the time stamp content in step 2 of the above embodiment 1, the master station uses the RSA algorithm to encrypt the remote control command and time stamp and generates the RSA remote command message; in this embodiment, The encryption is from the seventh byte of the RSA remote command message to the end of the timestamp (including the timestamp). Due to the difference in encryption time, the timestamp in the RSA remote command message sent each time is also different. The digital signatures generated each time are also different. Correspondingly based on step 3 of Embodiment 1, the security protection terminal utilizes the public key to decrypt the RSA telegram message and also verifies the validity of the time stamp. If the verification is correct, the security protection terminal sends a message to the master station Reply the confirmation command message. If the verification is wrong, the security protection terminal will reply the...
Embodiment 3
[0038] Example three, please refer to figure 2 , on the basis of Embodiment 2, the terminal is also provided with a soft pressing board, which is a virtual remote signal, used to start or stop receiving remote control commands from the master station, the state of the soft pressing board can be set by the terminal itself or through the master Remote control command settings for the station. Then compared to the remote control process described in Embodiment 2, the master station needs to detect whether the soft press plate of the current terminal is in the input state before sending the RSA remote command message to the terminal. If the soft press plate is in the exit state, the master station It is necessary to issue the input command for the soft platen first, and then issue the RSA remote command message. That is, in the third embodiment, if the remote control command is to be executed successfully, three conditions need to be met: first, the time stamp is valid; second, ...
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