CHAPTER-4.POWER GRID SYSTEM (NATIONAL GRID) IN CHINA China’s electric power industry is the world’s largest electricityproducer. In china, most of the electricity produced from coal. According to2014, 73% of domestic electricity production registered from coal energy. Since2013, Coal-fired electricity production of renewable energy was decreased.
China has the world’s third biggest coalstockpile and massive hydroelectric resources available. However, a geographical mismatch between the locationof the coal fields in the north-east (Heilongjiang, Jilin, and Liaoning) and north (Shanxi, Shaanxi, and Henan), hydropower in the south-west (Sichuan, Yunnan, and Tibet), and the fast-growing industrial Burdencentre of the east (Shanghai-Zhejiang) and south (Guangdong, Fujian). 4.1 TYPES OF POWER GRID SYSTEM(NATIONAL GRID) IN CHINA1. State Gridcorporation2. ChinaSouthern power grid State grid and china southern power grid are linked by HVDC back to backconnections. 4.
1.1. STATE GRID CORPORATION SGCC became installed onDecember 29, company Profile2002,an agency permitted by using the kingdom Council to perform kingdom-authorized investment and a pilot kingdom retaining company.
it has been ratedas an A-elegance organization via SASAC assessment on operation performances for eleven consecutive years. As the mostimportant application within the global, SGCC has a strong rating of the second on Fortune global 500.SGCC constructs and operates energy grids as its centre business.As a terrific-big nation-owned employer vital to countrywide-electricity safety and economic lifeline, with a task to provide more secure, purifier, and greater cost-efficient and sustainable strength supply.SGCC operates as a set with RMB536.
3 billion registered capital and1.72 million personnel.SGCC offers electricity to over 1.
1 billion human beings in 26 provinces, self-sustaining areas andmunicipalities, overlaying 88%of the country wide territory.The business enterprise also owns and operates foreign places belongings withinthe Philippines, Brazil, Portugal,Australia and Italy, and so forth.with excellent performance. 4.
1.2.CHINA SOUTHERN POWER GRID China Southern Power Grid Co., Ltd. (hereinafter referredto as CSG) was installed onDecember twenty ninth, 2002 becauseof one of the power region deregulatory reform in China. As onein every of state-owned power grid businesses in China, CSG invests, constructs and operatesthe transmission and distribution networks in Guangdong, Guangxi, Yunnan,Guizhou and Hainan provinces and regions. Its predominant duties are: to perform and manipulate electricity gird inkeeping with the law, make sure dependable energy deliver, plan the improvement of regional electricity gird,foster nearby electricity market, control strength dispatchingand buying and selling middle, and carry out electricity dispatching inline with electricity gird operation legal guidelines and the marketplace rules.
As a kingdom-owned organisation, SCG takes it as its venture to undertake the duty of defensive public interests and to take the cause build aharmonious society. The corporation tries to optimize the regional allocation of assets, coordinate power technology, transmission and distribution, and provide clients with safe and dependable energy,and to provide certified-offerings and create social wealth in additionto environmental blessings for the society. 4.2. HISTORY OF POWER GRID SYSTEM(NATIONAL GRID) IN CHINA China started out a hobby to exchange the country’s power segment in a 3-setup process in 1986. in the 0.33 and final degree in March 2002 the country Council of the humans Republic of China placed into effect an arrangement torebuild the nation’s electricpowered energy framework with a specific quit goal to make contention and separate age and transmission capacities.
The kingdom Grid businessenterprise of China turned into hooked up onDecember 29, 2002, whilst therebuilding separated the preceding nation energy enterprise of China into two network groups, 5 agegatherings and four accessorial enterprise organizations. the 2 matrix businesses made have been the State Grid company ofChina and a littler China Southern Power Grid agency. Atits creation, the corporation had an age limit of 6.47 gigawatts. In 2003 and dynamically so thru the mid-2000s, electrical deficiencies made the management basis engineered strengthoutages. The country Grid enterprise assessed there were 1 trillion yuan in misfortunes from 2002 to2005. The state Grid businessenterprise of China ran the initial 1,000-kilovolt replacing modern-day electric cable among Northern Shanxi and focus Hubeiin January 2009.
In 2012 it commenced operationof a 800-kilovolt coordinate modern-day line that sends hydropower from western Sichuan to Shanghai.It additionally has an exchanging ebb and glide circle line in the Yangtzewaterway delta, and three longitudinalsubstituting momentum traces that bring electricity toSouthern China from the Northern locale. The country Grid organization became engaged with a multi-level incredible matrix assignment for China’s electric lattice made preparations for 2011-2015. China’s savvy lattice endeavour’s aren’t pretty similarto those in the US in that itsdesigns vigorously utilize extremely excessive voltage(UHV) lines.
some UHV improvement ventures started in 2012 to deliver UHV electrical cables crosswise over Huainan, Wannan, andShanghai and another fromXilingol League to Nanjing. with the aid of2015, the agency intendsto have 3 greater flat UHV traces via West inner Mongolia to Weifang, from imperative Shanxi-Xuzhou to Yaan-southern Anhui and 11 unique lines by way of 2015. In 2012 the organisation positioned assets into CDP Reti. CHAPTER-5: CHAPTER-6.
CHALLENGES and FUTURE TRENDS FOR POWER GRID SYSTEM 6.1. RELIABLITY and SECURITY ISSUE Nowadays, although China has gainedthe reputation of becoming one of the few countries that are able to utilizethe ultra-high-voltage (UHV) power grids by applying the most advancedtechnologies in the world. There still remains some controversies andchallenges when it comes to the UHV power grid.
Among them, the reliability andsecurity issue are the most crucial and significant one. (The DevelopmentStrategy of The State Grid Corporation of China 2017, p16). Currently, the power grid is gettingmore and more crowded and intensive in China due to the increasing amount ofUHV transmission line. It will increase the potential risk of the blackoutcaused by local failures even if just one single accident occurs on one line. As stated in (National Science Review2014, p369), in spite of the fact that the majority of the provincial powergrids are already been covered by the national defense system in China. It isas yet inadequate to avoid some extreme natural disasters, including lightningas well as ice covering. Besides, there are some other issues and shortages innumerous aspect that should be taken into our consideration as well, such asthe incorporation of the information and data from various systems includingthe ecological and geographic systems, the ability of viable and efficientreactions to monstrous disturbances, as well as the adjustment and preventioncapacity in managing the crisis control together with the assignmentcoordination. Xue comments that (National ScienceReview, 2014, p370): therefore, it is necessary to try the best to prevent allthe accidents even with lower probability in order to shield the power gridfrom serious harms.
So, one of the future trends of the power grid would be theextension from the current approach of gathering information which is onlyfocused on the power system itself to the information system from the naturalenvironment as well. Only by doing so, the range of the defense systems will beable to stretch out to wider borders. Moreover, the decision-makingstrategies for the design of the power grid defense system will be expected toshift from the current ordinary operation mode to the worst situation, whichwill also contribute to the stability and reliability of the power transmissionline by establishing a new active defense approaches. 6.
2. MARKET and POLICY ISSUEOnthe other hand, as a fast-growing country, China is not capable of affordingthe economic result of deficient or oversupply of the electrical power due tothe imbalance of the distribution of the power grid. A perfect example could befound by the official data from the coastal city of Guangzhou, which indicatedthat there was a significant power shortage of approximately 0.16 millionkilowatts in the summer session in 2015 due to the matching problem between theincreasing demand of the electricity and the outdated power grid system, whichhas cost nearly millions of dollars as a result from the loss in GDP directlyin this manufacturing hub of China (China SouthernPower Grid, 2015, PA04). Inorder to battle this crisis, Guangzhou and even the whole of China need toaccelerate constructing the new power grid and power plants to meet theconstantly growing demand for the electricity. However, unlike some otherwestern countries, the power grid infrastructure arrangement, maintenance, aswell as the electricity price in China are mainly controlled by the state-ownedcompanies (the State Grid Corporation of China and China Southern Power GridCompany), meaning that the non-market force has the most significant and dominantinfluence on the decision-making of the power grid system in China. Therefore,the market and policy issue should also be taken seriously when it comes to therebuilding of the new power grid. (The Future Electricity Grid, 2016, p16) Generallyspeaking, in an ideal power grid market, the central planning from thenon-market force for the distribution of transmission line and even the amountof power generation should be zero in order to keep the market competitive.
Thesignals of the market price are supposed to be sufficient enough to prompt thepower grid by inducing the investment. Guarantee on the return of investment isexpected to be rare and the investors have the completed right to determine howmuch they are willing to invest by evaluating the potential benefit and risks. Eventhough it is highly unlikely to develop this ideal power grid market in thefuture of China due to the political policy, it has remained the faith that itis feasible to improve the efficiency of state-owned companies by introducingthe private management approach.
It is also practical for the Chinesegovernment to ensure that the correct signals are being sent based on themarket regulation so that at least the level of the power grid investment fromthe state is appropriate, which can contribute greatly to avoid the presence ofthe huge imparity between excess capacity as well as insufficient capacity ofthe power grid systems in China. (China’s Future in Electrical Energy, 2005,p37 )