Security Issues In Smart Grid

Certain Investigations on Security Issues in Smart Grid over Wireless Communication

Abstract - Smart Grid (SG) communication has recently received significant attentions to facilitate intelligent and distributed electric power transmission systems. The advent of the smart grid promises to user in an era that will bring intelligence, efficiency, and optimality to the power grid. Most of these challenges will occur as an Internet-like communications network is super imposed on top of the current power grid using wireless mesh network technologies with the 802.15.4, 802.11 and WiMAX Standards. Each of these will expose the power grid to security threats. Wireless communication offers the benefits of low cost, rapid deployment, shared communication

• The use of robust two-way communication, advanced sensors, and distributed computing technology improves all round efficiency, reliability, and safety of energy transmissions.

• It is greatly helpful to the users in remote areas to get in touch through wireless communication.

• A modernization of Smart Grid improves the end-use devices and appliances.

• It decreased customer discontent, greater personal and economic security, and greater confidence in public governance.

2. Related Work

Yichi Zhang et al. proposed that a distributed intrusion detection system for smart grid (SGDIDS) by developing and deploying an intelligent module, the analyzing module (AM), in multiple layers of the smart grid. Multiple AMs is embedded at each level of the smart grid to improve detection and classify malicious data and possible cyber attacks. In this paper it achieves effective analysis of communication traffic and detects the type of attack, its occurrence into the communication system. But the paper not proposed the optimal combination of different classification techniques and different Intrusion Detection System (IDS) for achieving a higher overall accuracy for intrusion detection. Thus, the scheme is subjected

Considering the limitation on computation power, the hash functions are recommended in DSG module. a) Encrypt/Decrypt:

The new dynamic secret is applied to update the dynamic encryption key (DEK) by DEK(k) is generated at both sides of communication synchronously. The sender applies it to encrypt the Data, and the receiver applies it to decrypt the Cipher. XOR function, as one of the most light-weight and easy-implementation algorithm, is applied to update the DEK and encrypt/decrypt the data on both sides. If DEK is shorter than the data, DEK(k) is replicated and padded circularly to generate whose length is equal to the raw data or cipher text. DSE scheme is an appropriate solution for securing SG wireless communication. It can prevent eavesdropping and forging by utilizing the inevitable errors in wireless communication; can reduce the cost on computation and storage by applying the simple algorithms; can self-organize and self-manage.

3.1.4 Attack case in Smart Grid

A smart grid platform is constructed to investigate how the attacker intercepts the communication of smart meter and injects bad data into smart