A New Information Security Model in Smart Grid

Abstract： Development and powerful smart grid unified national power Grid Corporation； information security protection system is facing new challenges. Along with the development of informationization， automation， interactive features， intelligent power grid and improve the two-way interaction between user， and put forward the new request information safety protection system from six aspects， transmission， distribution， and consumption， substation and scheduling. Based on the analysis of the requirements of the intelligent power grid all aspects of information security， combined with national level of protection policies and regulations and risk evaluation methods， the author puts forward the model of intelligent information grid security and the strategy， and the support of the intelligent design network information safety system， finally set up information safety protection system， including smart grid of the close coupling six areas of smart grid generation， transmission， distribution， substation， power， scheduling， and achieving a fully support the strong ai power grid construction and information security control， controllability and under control.

Key words： Smart Grid； Information Security Model； Implementation Methodology

1. Introduction

On the analysis of electric power development of the new ideas in the world and according to China's national condition， the national power grid [1] put forward the development goal crowned based on independent innovation， speed up the construction of ultra high voltage power grid as the backbone network frame， and coordinated development of power and information technology， at all levels automation technology， the unity of the interactive features strong intelligent power grid， focus on a strong， reliable， cost-effective， clean， environmental protection， transparent， open and friendly， interactive content intelligent power grid strategy， stick to the overall target of Chinese characteristics， structure and stage of development goals powerful smart grid. At present， in accordance with the current "dual-network dual-plane， area Fenwick， grades protection， multilayer defense" safe strategy， information network segregation within and outside， the national power grid company for the comprehensive level of protection and the construction of the core content of information security defense system initially formed a "defense levels of protection system depth"， good enough to meet the production requirement of process protection national standards.

2. International Information Security Protection

Progress in Smart Grid

At present the European and American countries promote intelligent power grid planning， the main development idea is， the creation of new power grid the use of information technology， in order to establish a high performance， which is home， safety， reliability， and flexibility of the power system. In a foreign country， they pay attention to the development of information security protection intelligent power grid， especially the United States practice a smart grid is very dependent on the network effect， so it pay attention to information security very seriously. In September 2009 and March 2010， the United States issued the first and the second edition of the intelligent network information security policies and requirements （draft） "， the second edition is an inheritance and the deepening of the first edition， reflect the latest results of U.S. intelligence network information safety field. Standard guidance the U.S. intelligence network as the main standard information safety protection， the purpose is to identify the safety of power grid full intelligence needs and plans to security policy， guiding the implementation of the main security system operators to improve the security of the United States intelligent power grid. According to the schedule， NIST issued， the official version of the report is expected in the middle of 2010， but the second edition of the draft and the final version is released later than expected.

3. Requirements Analysis of Strong Smart Grid Information Security Protection In China

From security risks of all sectors of business system on the smart grid， major security risks and requirements which smart grid faces are shown in Figure 1：

In Fig. 1， risk level shows all kinds of attacks and the influence to the severity of the business. Vh express high， high H， montas said， L express low. Risk types including confidentiality， integrity， and availability， the denial， responsibility， the authentication and reliable.

Information security organization is definition of information security of the core team of role and function of the relevant responsibilities， and to guide future information security organization， team construction and the development of ability. Information security program describe all business process and information security function of the relationship. Information security design scheme of the system， including the information security risk management， inspection and supervision of information security， information security awareness and training and education content.

4. Design Of Smart Grid Information

Security Protection Model

The most important factors in the model including： strategy， management and technology. Details including security model identification， risk analysis， requirement analysis， security policy， security framework， sure security domain， testing and safety technology and product selection， implement safety engineering， implementation and supervision and safety engineering， test and operation safety engineering， education and technical training safety consciousness， safety audits and inspections， emergency response， etc. This is a constantly back and forth， the safety of the spiral model. Information security engineering capability maturity model （SSE-CMM） guidance security project implementation in order to make a single safe appliance is American solve management， organization and design， implementation， verification of security engineering. This paper introduces the design of information safety protection model in intelligent power grid will fully absorb the idea of information security project life cycle model （ISE-LCM）， and expand the PDRR traditional security model. On this basis， information security active defense model， put forward in intelligent network performance for range.

The model protection strategy inherited the dual-network dual machine， partition Fenwick level， protection， multilayer defense strategy of the traditional power system. At the same time， information security system design concept， business， the inheritance and development， this paper puts forward the future intelligent power grid in the combination of active defense ideas.

5. Information Security Protection

Framework Of Smart Grid

According to the analysis of the demand of intelligent power network information security， information security protection framework of the state grid corporation of China put forward the intelligent power grid. The framework not only combines active defense model of intelligent power network and information security protection strategy， and combined with domestic and international and large enterprise in the field of information security and the development trend of best practices， considering the information security measures， through the security system structure， data security， application security and security operations and maintenance， security management and operation safety system and an international vision. Information security protection framework of smart grid is shown in Fig.3：

6. Conclusion

State grid companies information security capability maturity will further improve intelligent power grid through the research information security framework. This paper reviewed the safety protection ability， the national power grid company has established. Safety requirements， substation， power generation， transmission， distribution， and consumption， and analyzes in intelligent grid dispatching depth.

References

[1] CHEN Shu-yong，SONG Shu-fang，LI Lan-xin，SHEN Jie. Survey on Smat Grid Technology [J]. Power System Technology，2009， 8：26-29.

[2] TANG Hong-yu， CUI Dong-hua. A New Information Security System Model [1]. CHINA INFORMATION SECURITY， 2008， 6：102-105.

[3] Haold F. Tipton， Micki Krause. Information Security Management Handbook[M]. Fifh Edition.US： Auerbach Publications， 2004.

[4] Jianguag Sun， Yan Chen. Intelligent Enterprise Information Security Architecture based on Service Oriented Architecture [C]. 2008 Interational Semina on Future Information Technology and Management Engineering， 20-20 Nov. 2008，196-200.