CN103971298A - Simulation analysis method for nuclear power and power grid mutual interference - Google Patents
Simulation analysis method for nuclear power and power grid mutual interference Download PDFInfo
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Abstract
The invention provides a simulation analysis method for nuclear power and power grid mutual interference. The method includes the steps that (1), fundament characteristics of a power grid are analyzed; (2), a research problem sample space needed by nuclear power and power grid mutual interference is selected; (3), transient state and medium and long term simulation analysis is performed. The simulation analysis process comprehensively and efficiently considers the nuclear power and power grid mutual interference after high-capacity nuclear power grid connection. The simulation analysis method not only can cover the transient state process and the medium and long stable analysis process, but also can be adaptive to an actual power grid well. The method facilitates comprehensively and accurately evaluating the power grid and nuclear power mutual interference and security necks after nuclear power access, and the method is of great significance to normal operation of the power grid and a nuclear power source after nuclear power access.
Description
Technical field
The invention belongs to nuclear power power grid planning operation emulation technology, specifically relate to the interactional simulating analysis of a kind of nuclear power and electrical network.
Background technology
Nuclear energy is the modern energy that can substitute on a large scale conventional energy resources, not only clean but also economical, is not subject to the restriction of region simultaneously, and nuclear power is more and more come into one's own.Moreover the reserves of the nuclear fuel of fission energy in the earth's crust and ocean are very abundant, even if the situation of resource anxiety can not appear because of Application of nuclear techique in more conservative estimation within considerable time.Though the uranium ore resource of China is very not abundant, but alternative uranium is at the forefront in the world as the thorium ore reserves position of nuclear fuel.So these nuclear fuels of rational exploitation and utilization are significant for the energy crisis of alleviating China.Nuclear energy power generation not only has superiority on resources and environment, is also very competitive economically.At present, introducing, digesting, absorbing on the basis of advanced foreign technology by Zhong Guang core group, reaching international similar advanced level in conjunction with " two generations added " Chinese modified million kilowatt presurized water reactor (CPR1000) nuclear power technology of the gradual improvement over more than 20 years and autonomous innovation formation.In the 2005-2020 " planning of nuclear power Long-and Medium-term Development " that State Council passes through, explicitly point out, the year two thousand twenty China nuclear power operation installed capacity will reach 4,000 ten thousand kilowatts, reach 1,800 ten thousand kilowatts building nuclear power capacity.To the year two thousand twenty, China's nuclear power installed capacity will increase 2,700 ten thousand kilowatts of left and right newly, than present increase by 320%.
Nuclear power emulation can be divided into two classes substantially, one class is the nuclear power emulation taking full scope simulator (FSS-Full Scope Simulator) as representative, the emulation of unit itself is paid close attention in this class emulation, is mainly used in teaching emulation and operator's training of nuclear power; Another kind of is nuclear power emulation for electrical network.Large capacity nuclear power generating sets are connected to the grid and have changed the original trend distribution of electrical network, circuit through-put power and system inertia, likely cause system stability problem.In stability of power system emulation at present, majority replaces emulation with conventional fired power generating unit model, does not consider the singularity of nuclear power generating sets itself.Current domestic nuclear power generating sets, in design, the debug phase of control and protection system, do not carry out the simulation and analysis of nuclear power and electrical network reciprocal effect yet.Generally speaking, at present consider that from temporarily steady angle the grid-connected large capacity nuclear power of nuclear power and electrical network cross-impact analysis lack systematic study, and in stablize for a long time aspect, correlative study work is more rare.
Summary of the invention
For the deficiencies in the prior art, the invention provides the interactional simulating analysis of a kind of nuclear power and electrical network, along with the increase of the grid-connected scale of domestic nuclear power, nuclear power power supply is increasing on the impact of electrical network, the characteristic of the grid-connected near region of electrical network self-operating characteristic, especially nuclear power generating sets electrical network also has material impact to the operation of nuclear power generating sets.Nuclear power generating sets analogue system is mainly used in nuclear power generating sets operations staff's training at present, lays particular emphasis on the emulation of the physical equipment of power plant own and internal fault thereof, does not conventionally relate to influencing each other between electrical network and nuclear power system.Along with the increasing of China nuclear power installation proportion, the impact of the extensive access that Chinese scholar is more and more paid close attention to it on electrical network, content relates to the multi-angles such as the stage construction such as power supply, electrical network and planning, design and running.But from the angle that covers transient state and medium-term and long-term overall process, large capacity nuclear power and electrical network are influenced each other and carry out simulation analysis aspect and not yet have complete and thinking and method clearly.Therefore,, how for the singularity of nuclear power power supply, after the large capacity wind-powered electricity generation access of comprehensive and accurate simulation, with the influencing each other and feature of electrical network, the safe and stable operation of the guarantee grid-connected rear electrical network of nuclear power and nuclear power power supply is had to important theory significance and practical value.
The present invention investigation both at home and abroad large capacity nuclear power grid-connected affect research and transient state and on long-term emulation technology progress basis, in conjunction with the intensive access of the large capacity of nuclear power power supply, to electric network influencing, large and nuclear power power supply operation requires high feature to electric network state parameter, for comprehensive efficient analysis nuclear power and electrical network influence each other, angle from nuclear power to electric network influencing, propose to comprise the Criterion of Selecting studying a question, the electrical link threshold value Criterion of Selecting of survey region and nuclear power to the required sample space that studies a question of electric network influencing final determine criterion at interior nuclear power to the required compound Criterion of Selecting studying a question of electric network influencing, angle from electrical network on nuclear power impact, has proposed the nuclear power misoperation limited field mapping Criterion of Selecting studying a question.Construct the large capacity nuclear power of assessment and the interactional complete analysis algorithm flow of electrical network in transient state and medium-term and long-term time scale based on carried principle, formed nuclear power and the interactional complete simulating analysis of electrical network of containing transient state process and medium-term and long-term process in conjunction with carried analysis process.
Simulation analysis result shows, the large capacity nuclear power of assessment proposed by the invention and the interactional transient state of electrical network and medium-term and long-term simulating analysis can effectively be taken into account grid-connected impact and the impact of operation of power networks characteristic on nuclear power generating sets on electrical network of large capacity nuclear power comprehensively, can effectively reduce again the problem sample space of analysis simultaneously, the security bottleneck that the grid-connected rear electrical network of accurate evaluation nuclear power and nuclear power exist, be conducive to promote the coordinated development between the two of grid-connected nuclear power and electrical network, promote the safe and stable operation level of electrical network and nuclear power.
The object of the invention is to adopt following technical proposals to realize:
A kind of nuclear power and the interactional simulating analysis of electrical network, its improvements are, described method comprises:
(1) analyze electrical network fundamental characteristics;
(2) choose nuclear power and the electrical network required sample space that studies a question that influences each other;
(3) transient state and medium-term and long-term simulation analysis.
Preferably, described step (1) comprise analyze that electrical network essential characteristic is qualitative, the relevant code of nuclear power misoperation limited field of Power System Steady-state property calculation, electrical network transient state N-1 check result and actual electric network compiles.
Preferably, described step (2) comprises
(2.1) determine that nuclear power is to electric network influencing problem;
(2.2) choose embodiment factor sequence;
(2.3) computational problem sample set vector;
(2.4) calculate survey region electrical network electrical link and characterize vector;
(2.5) calculate nuclear power to the required final sample space studying a question of electric network influencing.
Further, described electrical network can be obtained by nuclear power misoperation limited field mapping Criterion of Selecting required the studying a question of nuclear power impact, extract misoperation operating mode corresponding to each nuclear power misoperation limited field by the relevant code of nuclear power operation limited field, by the fault scenes of the generation at certain electric structure off the net, obtain electrical network to required the studying a question of nuclear power impact.
Further, described step (2.1) comprises determines that nuclear power is to electric network influencing problem, and the described problem that affects comprises: the nuclear power angle stability problem of be correlated with, and the time scale of correspondence is transient state process; Nuclear power correlated frequency stable problem, corresponding time scale is transient state process; Nuclear power associated voltage stable problem, corresponding time scale is transient state process and medium-term and long-term process; Nuclear power loses the steady problem of associated hot, and corresponding time scale is transient state process; Relate to nuclear power the matching problem that net is protected, corresponding time scale is medium-term and long-term process.
Further, described step (2.2) is included in the embodiment factor of the particular problem of the grid-connected required research of nuclear power in actual electric network.
Further, described step (2.3) comprises that the concrete value that embodies the factor according to the problem sample sequence of the grid-connected impact of nuclear power and actual electric network obtains problem sample set vector.
Further, described step (2.4) comprises that calculating survey region electrical network electrical link characterizes vector, nuclear power generating sets with exchange interconnected network electrical link port number, nuclear power place provincial power network and exchange the other parts electrical link port number of interconnected network and the electrical link port number of nuclear power place partial electric grid and provincial power network other parts.
Further, described step (2.5) comprises that calculating nuclear power is that problem sample set vector sum survey region electrical network electrical link characterizes vector to the required final sample space studying a question of electric network influencing.
Preferably, described step (3) simulation result comprises transient analysis result, nuclear power medium-term and long-term analysis result, electrical network transient analysis result and the electrical network medium-term and long-term analysis result on nuclear power impact on nuclear power impact on electric network influencing of nuclear power on electric network influencing.
Compared with the prior art, beneficial effect of the present invention is:
The nuclear power that the present invention carries shines upon Criterion of Selecting on the required compound Criterion of Selecting studying a question of electric network influencing and electrical network to the required nuclear power misoperation limited field studying a question of nuclear power impact, for the large grid-connected rear electrical network of capacity nuclear power and nuclear power influence each other required study a question fast, determine a kind of definite principle with good operability is provided comprehensively, can well adapt to again actual conditions and the actual demand of different actual electric network simultaneously.
Institute of the present invention extracting method has proposed to take into account the grid-connected rear nuclear power of large capacity nuclear power and the interactional simulation analysis flow process of electrical network first comparatively comprehensively and efficiently, transient state process and medium-term and long-term stability analysis process not only can be covered, and actual electric network can well be adapted to.Institute's extracting method is conducive to comprehensive accurate evaluation nuclear power and accesses influencing each other and security bottleneck of rear electrical network and nuclear power, and this is significant for the normal operation that ensures the rear electrical network of nuclear power access and nuclear power power supply.
Brief description of the drawings
Fig. 1 is a kind of assessment nuclear power provided by the invention and the interactional transient state of electrical network and simulation analysis process flow diagram.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The target of a kind of nuclear power of the present invention and the interactional simulating analysis of electrical network is carrying out in the grid-connected simulation analysis of large capacity nuclear power, take into account the security bottleneck that influences each other He may exist between nuclear power power supply and electrical network, for the grid-connected analysis of nuclear power provides a kind of normalized and analysis process and the method for combining closely with grid-connected nuclear power and electrical network actual conditions and demand comprehensively and efficiently.Need to solve following problems: large capacity nuclear power and electrical network which problem that influenced each other needs to study for this reason, the problem of required research should (as time scale, target grid) be carried out analysis under which kind of condition, and how institute is closely connected and how conducts a research analysis etc. with actual conditions and demand if studying a question.The present invention is directed to the problems referred to above from nuclear power the angle to electric network influencing, proposed first, including the electrical link threshold value Criterion of Selecting of the Criterion of Selecting studying a question, survey region and nuclear power, the required sample space that studies a question of electric network influencing final determined to nuclear power criterion is to the required compound Criterion of Selecting studying a question of electric network influencing; Angle from electrical network on nuclear power impact, has proposed the nuclear power misoperation limited field mapping Criterion of Selecting studying a question.Based on the systematic large capacity nuclear power of assessment and the interactional complete analysis algorithm flow of electrical network of having constructed in transient state and medium-term and long-term time scale of carried principle, nuclear power and the interactional complete simulating analysis of electrical network of containing transient state process and medium-term and long-term process are formed in conjunction with carried analysis process.
Embodiment
A kind of nuclear power of the present invention and the interactional simulating analysis of electrical network are specially:
1, electrical network Basic Characteristic Analysis:
After nuclear power access electric system, will bring impact to system operation, and be mainly reflected in, first, the fault of nuclear power generating sets or malfunction meeting impact electrical network; Because nuclear power generating sets capacity is large, the unexpected removal of load of nuclear power generating sets or the machine of cutting will cause electrical network to lose suddenly relatively high power, and system frequency, merit angle, voltage stabilization are impacted; Losing of simultaneously large capacity nuclear power generating sets, also can shift and impact local electric network swim, likely causes thermally-stabilised problem.Secondly; the net that relates to of nuclear power generating sets is protected the impact on electricity net safety stable; except similarly protecting with conventional fired power generating unit; for example; outside generator overspeed protection, low-voltage/overvoltage protection etc., nuclear power generating sets also need to consider the distinctive safety system of nuclear power system such as special protection, the Main Equipment Protection of unit of nuclear reactor in voltage and frequency anomaly situation.These problems relate to transient state process a bit, and some relates to medium-term and long-term stabilization process; Some problem only occurs at partial electric grid on the other hand, and some is of overall importance.Therefore how in conjunction with electrical network actual conditions choose reasonable and definite nuclear power to electric network influencing required study a question most important.Select for the required sample studying a question, the present invention proposes Criterion of Selecting, for the required target grid studying a question, the present invention proposes electrical link threshold value selection principle.
2, nuclear power and the electrical network required sample space that studies a question that influences each other is chosen:
Be that nuclear power is to the required compound Criterion of Selecting studying a question of electric network influencing.
The problem sample set of the grid-connected required research of capacity nuclear power can represent with vectorial X greatly,
X=[a
1x
1, a
2x
2, a
3x
3, a
4x
4, a
5x
5, a
6x
6..., a
nx
n], (n>6, n is integer)
1), determine that nuclear power is to electric network influencing problem:
Wherein, x
1, x
2, x
3, x
4, x
5, x
6..., x
nrepresent the particular problem sequence of the grid-connected required research of nuclear power, chat as front, the value of this sequence is 1, and its concrete meaning may be defined as: x
1for the relevant angle stability problem of nuclear power, corresponding time scale is transient state process, x
2for nuclear power correlated frequency stable problem, corresponding time scale is transient state process, x
3for nuclear power associated voltage stable problem, corresponding time scale is transient state process and medium-term and long-term process, x
4for nuclear power loses the steady problem of associated hot, corresponding time scale is transient state process, x
5for nuclear power relates to the matching problem that net is protected, corresponding time scale is medium-term and long-term process, x
6..., x
nfor other system stability problem that nuclear power may cause, be sequence spreading, undefined temporarily at present, the in addition specific definition of new problem that can need and occur future according to actual electric network.
2), choose embodiment factor sequence:
Wherein, a
1, a
2, a
3, a
4, a
5, a
6..., a
nbe illustrated in the embodiment factor of the particular problem of the grid-connected required research of above-mentioned nuclear power in actual electric network.This sequential parameter value is [0; 1] binary value, considers current China nuclear power generating sets, especially following new grid-connected unit; capacity is larger; basic is 1000MW unit, once lose, the impact that merit angle, frequency and the trend heat of transfer that system is caused stablized aspect is larger; for voltage stabilization; more depend on that unit is distributed in sending end electrical network or receiving end electrical network, relate to net protection as long as access electrical network may all exist the matching problem with system for nuclear power.Based on above analysis, as follows to embodying factor value concrete regulation: in the time that nuclear power generating sets single-machine capacity is more than or equal to 1000MW, a
1, a
2, a
4be 1; Otherwise, a
1, a
2, a
4be 0.When nuclear power generating sets are positioned at sending end electrical network, a
3be 0; Otherwise, a
3be 1.A
5value perseverance is 1.Due to x
6..., x
nundefined temporarily, a
6..., a
nperseverance gets 0 at present.
3), computational problem sample set vector X:
X in analyzing according to the generality of the grid-connected impact of nuclear power
1, x
2, x
3, x
4, x
5, x
6..., x
nproblem sample sequence, and actual electric network a
1, a
2, a
3, a
4, a
5, a
6..., a
nembody the concrete value of the factor, can obtain finally needing the problem sample set vector X of research.
4), calculate survey region electrical network electrical link and characterize vectorial Y:
It is the electrical link threshold value Criterion of Selecting of survey region.
The problem that may bring to system after grid-connected due to nuclear power within the scope of different electrical networks, influence degree difference.Therefore in order accurately to define the problem sample space of required research, also need to provide the selection principle of the corresponding survey region electrical network studying a question.Because nuclear power power supply is all the access points by partial electric grid, access in large electrical network, consider that the large electrical network of China exists interchange interconnected network, two levels of provincial power network, the partial electric grid of some nuclear power generating sets access again with large electrical network in other parts there is obvious contact channel, the electrical link of definition survey region electrical network characterizes vectorial Y, Y=[y
1, y
2, y
3]
This sequential parameter value is [0,1] binary value, wherein y
1represent nuclear power generating sets and exchange interconnected network electrical link port number, need only nuclear power and exchange interconnected network and have electrical link, value is 1; Otherwise, be 0.Y
2represent nuclear power place provincial power network and the other parts electrical link port number that exchanges interconnected network, y
3represent the electrical link port number of nuclear power place partial electric grid and provincial power network other parts.Electrical network all needs to meet N-1 criterion at present, considers that the grid-connected reliability requirement of nuclear power generally can be higher, for y
2and y
3can consider by N-2 situation, work as y
2and y
3corresponding electrical link port number is greater than 2, and value is 0; Otherwise value is 1.
(5) calculate nuclear power to the required final sample space Z studying a question of electric network influencing;
Be the final definite criterion of nuclear power to the required sample space that studies a question of electric network influencing.
Chat as front, the Criterion of Selecting studying a question has been determined the basic problem of required research, and the electrical link threshold value selection principle of survey region has been determined Grid scope corresponding to need that study a question.Both have defined nuclear power jointly to the required sample space that studies a question of electric network influencing, as nuclear power represents with Z the required final sample space studying a question of electric network influencing,,
Z=X × Y, Z is the vector product of X and Y.
(6) the nuclear power misoperation limited field of actual electric network:
Be that electrical network is on the required nuclear power misoperation limited field mapping Criterion of Selecting studying a question of nuclear power impact
The nuclear power generating sets nuclear safety that has been in operation requires high, nuclear island to features such as grid disturbance sensitivities, therefore large fault disturbance occurs in electric system also can cause serious impact and impact to nuclear power generating sets, and its safe and stable operation is constituted a threat to.Therefore electrical network has important practical significance on required study a question definite of nuclear power impact.Electrical network is also mainly reflected in merit angle, voltage and frequency aspect to the impact of nuclear power, wherein the impact of the transient state process such as angle stability has been contained in to the impact analysis of electrical network at nuclear power, and therefore electrical network has mainly concentrated on required the studying a question of nuclear power impact voltage and the impact of frequency jitter on nuclear power generating sets operation that electrical network Correlative Perturbation brings.Because nuclear power operation has strict security requirement, international atomic energy association, each nuclear energy country have all formulated the relevant code of nuclear power misoperation limited field, are generally the two-dimentional traffic coverage of frequency and voltage and corresponding permission working time with it.
In order to be determined that by nuclear power misoperation limited field electrical network is on required the studying a question of nuclear power impact.Be constructed as follows mapping selection principle: establishing A is the nonempty set that comprises frequency f, voltage u and tri-parameters of time t, i.e. A={fi, ui, ti}, the operating mode sequence that i ∈ nuclear power misoperation limited field code specifies.B is fault scenes, there is the rule F (fault scenes occurring at the most probable of certain electric structure off the net, reappear nuclear power misoperation operating mode at partial electric grid) make the each element in A, by rule F, in B, there is well-determined element corresponding with it.
Therefore pass through constructed mapping F:A → B, the relevant code of the nuclear power operation limited field that can be formulated by international atomic energy association, each nuclear energy country is extracted misoperation operating mode corresponding to each nuclear power misoperation limited field, the fault scenes occurring by the most probable at certain electric structure off the net, reappear nuclear power misoperation operating mode at partial electric grid, and check this misoperation operating mode whether to meet the nuclear power misoperation limited field of defined, the impact with verification electrical network on nuclear power with emulation mode.
3, influence each other transient state and the medium-term and long-term simulation analysis assessed of large capacity nuclear power and electrical network
Choose based on electrical network Basic Characteristic Analysis and nuclear power and the electrical network required sample space that studies a question that influences each other, design and propose the large capacity nuclear power of assessment and the interactional complete analysis algorithm flow of electrical network in transient state and medium-term and long-term time scale.Particular content as shown in Figure 1.From accompanying drawing 1, this algorithm flow is divided into: electrical network Basic Characteristic Analysis and basic data arrange, nuclear power and the electrical network required sample space that studies a question that influences each other is chosen and transient state and medium-term and long-term simulation analysis three phases, wherein electrical network Basic Characteristic Analysis and basic data arrangement are the input boundary conditions of this algorithm flow, specifically comprise: the relevant code of the nuclear power misoperation limited field of electrical network essential characteristic the qualitative analysis, Power System Steady-state property calculation result, electrical network transient state N-1 check result and actual electric network.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any amendment of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. the interactional simulating analysis of nuclear power and electrical network, is characterized in that, described method comprises:
(1) analyze electrical network fundamental characteristics;
(2) choose nuclear power and the electrical network required sample space that studies a question that influences each other;
(3) transient state and medium-term and long-term simulation analysis.
2. a kind of nuclear power as claimed in claim 1 and the interactional simulating analysis of electrical network, it is characterized in that, described step (1) comprise analyze that electrical network essential characteristic is qualitative, the relevant code of nuclear power misoperation limited field of Power System Steady-state property calculation, electrical network transient state N-1 check result and actual electric network compiles.
3. a kind of nuclear power as claimed in claim 1 and the interactional simulating analysis of electrical network, is characterized in that, described step (2) comprises
(2.1) determine that nuclear power is to electric network influencing problem;
(2.2) choose embodiment factor sequence;
(2.3) computational problem sample set vector;
(2.4) calculate survey region electrical network electrical link and characterize vector;
(2.5) calculate nuclear power to the required final sample space studying a question of electric network influencing.
4. a kind of nuclear power as claimed in claim 2 and the interactional simulating analysis of electrical network, it is characterized in that, described electrical network can be obtained by nuclear power misoperation limited field mapping Criterion of Selecting required the studying a question of nuclear power impact, extract misoperation operating mode corresponding to each nuclear power misoperation limited field by the relevant code of nuclear power operation limited field, by the fault scenes of the generation at certain electric structure off the net, obtain electrical network to required the studying a question of nuclear power impact.
5. a kind of nuclear power as claimed in claim 3 and the interactional simulating analysis of electrical network, it is characterized in that, described step (2.1) comprises determines that nuclear power is to electric network influencing problem, the described problem that affects comprises: the nuclear power angle stability problem of being correlated with, and corresponding time scale is transient state process; Nuclear power correlated frequency stable problem, corresponding time scale is transient state process; Nuclear power associated voltage stable problem, corresponding time scale is transient state process and medium-term and long-term process; Nuclear power loses the steady problem of associated hot, and corresponding time scale is transient state process; Relate to nuclear power the matching problem that net is protected, corresponding time scale is medium-term and long-term process.
6. a kind of nuclear power as claimed in claim 3 and the interactional simulating analysis of electrical network, is characterized in that, described step (2.2) is included in the embodiment factor of the particular problem of the grid-connected required research of nuclear power in actual electric network.
7. a kind of nuclear power as claimed in claim 3 and the interactional simulating analysis of electrical network, it is characterized in that, described step (2.3) comprises that the concrete value that embodies the factor according to the problem sample sequence of the grid-connected impact of nuclear power and actual electric network obtains problem sample set vector.
8. a kind of nuclear power as claimed in claim 3 and the interactional simulating analysis of electrical network, it is characterized in that, described step (2.4) comprises that calculating survey region electrical network electrical link characterizes vector, nuclear power generating sets with exchange interconnected network electrical link port number, nuclear power place provincial power network and exchange the other parts electrical link port number of interconnected network and the electrical link port number of nuclear power place partial electric grid and provincial power network other parts.
9. a kind of nuclear power as claimed in claim 3 and the interactional simulating analysis of electrical network, it is characterized in that, described step (2.5) comprises that calculating nuclear power is that problem sample set vector sum survey region electrical network electrical link characterizes vector to the required final sample space studying a question of electric network influencing.
10. a kind of nuclear power as claimed in claim 1 and the interactional simulating analysis of electrical network, it is characterized in that, described step (3) simulation result comprises transient analysis result, nuclear power medium-term and long-term analysis result, electrical network transient analysis result and the electrical network medium-term and long-term analysis result on nuclear power impact on nuclear power impact on electric network influencing of nuclear power on electric network influencing.
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