On Some Issues of Assessing the Efficiency of Renewable Energy Power Plants and the Share of Renewables in the World＇s Electricity Generation

The paper considers some issues related to the evaluation of power plants using renewable energy sources： energy efficiency, economic efficiency, the share of renewable energy in the world＇s electricity generation. At one time in the world there was a myth that more energy is expended on the construction of wind and photoelectric power stations, than they produce for the service life. Adherents of this myth are still found in Russia. In response to this myth, numerous studies have been carried out for the manufacturers of wind turbines and photovoltaic modules. It was proved that these power plants spent energy on them are produced within a period of less than a year and the energy consumed by them cannot be taken into account, since it is renewable. The author showed that power plants on organic fuel and existing nuclear plants using depleted fuel with a coefficient less than unity fundamentally cannot compensate for the energy used during their construction. In the world, the concept of the LEC （Levelized Energy Cost） produced by any power plant is widely used to estimate economic efficiency. However, the formula for determining it, in the author＇s opinion, contains an inaccuracy, which is proposed to be eliminated. At present, there are different opinions on the role of RES （Renewable Energy Sources） in the production of electricity. A summary indicator is the share of renewable energy in the world＇s electricity generation. The determination of the actual share of RES and the forecast of its growth is of significant importance for the development of the world economy. The author shows the differences in the estimates and suggests an approach for establishing agreed estimates.

Research about Online Security Warning and Risk Assessment of Power Grid Based on Energy Management System

In this paper, online security warning and risk assessment of power grid are proposed, based on data from EMS （Energy Management System）, combined with information of real-time operation state, component status and external operating environment. It combines the two factors, contingency likelihood and severity, that determine system reliability, into risk indices on different loads and operation modes, which provide precise evaluation of the power grid＇s security performance. According to these indices, it can know the vulnerable area of the system and whether the normal operating mode or repair mode is over-limited or not, and provide decision-making support for dispatchers. Common cause outages and equipment-aging are considered in terms of the establishment of outage model. Multiple risk indices are defined in order to reflect the risk level of the power grid more comprehensively.

Matter （Pudgalastikaya or Pudgala） in Jain Philosophy

Pudgalastikaya is one of the six constituent dravyas of loka in Jainism and is the only substance that is sense perceptible. The sense attributes ofpudgala are colour, taste, smell, and touch properties which become the basis of its diversity of forms and structures. The smallest constituent of pudgala is paramanu; the other forms are its combinations. The combination ofparmanus forms various states of the matter. The paper describes different types of combinations and modes, rules for combinations and properties of aggregates known as vargana. Some varganas associate with the soul and form various types of bodies of organisms and others exist as forms of matter in loka （universe）. The paramanu defines the smallest units of energy, space, time, and sense quality ofpudgala. Pudgala exists in visible and invisible forms but anything that is visible is definitely pudgala. Pudgala is classified in various ways; one of them is on the basis of touch property and there are pudgalas having two touches, four touches, and eight touches, each class having some specific character that differentiates them in respect of stability and motion. Pudgala is also classified as living, prayoga-parinat, and non-living, visrasa-parinat. The living matter existing as bodies of organisms exhibits some properties that are not found in non-living matter. Modem science has no such distinction which has become a cause of confusion in recognizing the existence of soul. The description of body remains incomplete without considering the presence of soul in the body. In modem terms, aparamanu is a vibrating and moving charge that is bosonic in character. The two-touch and four-touch pudgala do not appear to follow the speed limits prescribed by Special Theory of Relativity. Jain canonical works describe two types of motions sparshad type and asparshad type and these determine the motions of different class ofpudgala and soul. Jain philosophy describes the dynamics and motion ofparmanu in detail. The paper describes the Jain concepts of matter in detail and compares with the modem concepts to highlight the strength of Jain views. Modem science has explored the properties and behavior of matter in great detail but still there are many concepts that Jain philosophy has to offer.

对热处理炉热效率的探讨

本文分析了采用目前流行的热效率或单耗评价热处理炉能量效率的不足之处.提出了新的评估标准——真实热效率.讨论了用它评价炉子子能量效率的优点.指出真实热效率对于推动热处理节能的积极意义.

H-联图的拟拉普拉斯能量

设图H的顶点集为{1,2,...,k},不交图G1,G2,...,Gk的H-联图(记作G=∨H(G1,G2,...,Gk))是指在Gi(i=1,2,...,k)的基础上,对于H中的任意顶点i、j,若i,j∈E(H),则将Gi的所有点与Gj的每一个点相连所得到的图。特别地,若H=P2,则∨P2(G1∨G2)就是G1与G2的普通联图G1∨G2[4,5]。本文借助H-联图的拉普拉斯谱的性质,刻画了H为完全图以及Gi(i=1,2,...,k)均为n阶图时,∨H(G1,G2,...,Gk)的拟拉普拉斯能量的界。