CN111177922B - Submarine cable route layered optimization arrangement method under complex sea conditions - Google Patents
Submarine cable route layered optimization arrangement method under complex sea conditions Download PDFInfo
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Abstract
The invention provides a submarine cable route layered optimization arrangement method under complex sea conditions, which aims to solve the problems of one-sided consideration of factors, mutual interference of influencing factors, high construction difficulty, poor economic benefit and the like when submarine cable routes are selected in complex sea areas according to experience at present. The method comprises the following specific steps: firstly, collecting the distribution condition of each influence factor in a complex sea area and dividing the distribution condition into a plurality of layers of influence groups according to the differentiated influence degree; secondly, setting the expected effect and expected cable increasing yield of each influence factor in different layer influence groups; and finally, optimizing the submarine cable routing arrangement scheme layer by layer from top to bottom according to the influence factors, selecting local optimization measures according to the expected cable increasing yield, and continuously checking the conformity of the upper expected effect through feedback iteration until the current situations of all the influence factors are consistent with the expected effect. The invention controls the optimization direction of the submarine cable from the whole situation to the detail situation based on different properties of a plurality of influence factors in the complex sea area, and can effectively improve the operation reliability and the economical efficiency of the submarine cable.
Description
Technical Field
The invention relates to a current collection line route arrangement method of submarine cables, in particular to a submarine cable route layered optimization approach arrangement method under complex sea conditions.
Background
Offshore wind power, as a renewable clean energy source widely used in recent years, has effectively replaced the problems of air pollution and greenhouse gas emission caused by fossil fuels such as coal, petroleum and natural gas, and has been rapidly developed in recent years. The coastal region of China has superior wind resource conditions and abundant wind energy reserves, but part of the sea area is influenced by complicated seabed ground conditions, the difficulty of laying and routing of the submarine cables is high, the construction process is complicated, the construction cost is high, and the development of offshore wind power business is limited to a certain extent.
At present, the laying route of the submarine cable is generally determined according to mandatory terms specified by laws, regulations and standard standards and combined with engineering experience, the guidance of theoretical basis is lacked, and factors are considered, so that the problem of 'considering one another' is often faced under the limitation of a plurality of influencing factors.
Disclosure of Invention
The invention provides a submarine cable route layered optimization-seeking arrangement method under complex sea conditions, aiming at the defects of the prior art, the submarine cable route layered optimization-seeking arrangement method is characterized in that influence factors with different properties are divided from whole to detail in a layered mode, the influence factors are classified into upper-layer, middle-layer and lower-layer influence groups, the submarine cable route is optimized layer by layer from top to bottom, the submarine cable route preferentially meets the general wiring principle and relevant regulation and regulations, and the submarine cable route is further optimized-seeking arrangement based on the operation reliability and economic benefits of the submarine cable. Meanwhile, the influence factors of each layer are prevented from interfering with each other through feedback verification among the influence groups.
The invention aims to complete the technical scheme that a submarine cable routing layered optimization-seeking arrangement method under complex sea conditions comprises the following steps:
(1) Determining the number n of influence factors of submarine cable laying, defining i =1-n, and collecting the submarine cable laying influence factors F in the complex sea area i The distribution of (2);
(2) According to F i The degree of differential influence possibly generated is F i Dividing into three influence groups Q j Where j =1-3, layer j affects group Q j Has a total of K j An influence factor, defining Q j The influence factor in the influence group is F ju Wherein u =1-K j ；
(3) Set Q 1 、Q 2 Expected effect P of each influencing factor in the group 1u 、P 2u Setting Q 3 Expected cable gain beta affecting each influencing factor in the group umin ；
(4) Setting a preliminary arrangement scheme of submarine cable routes according to u =1-K 1 In the order of (1), influence the F in the group on the upper layer one by one 1u And P 1u Comparing the coincidence degrees and synchronously optimizing the submarine cable route; the optimized submarine cable routing mainly comprises the following steps of sequentially adopting optimization measures of changing the routing arrangement mode, increasing the submarine cable distance, increasing the submarine cable bending radius and avoiding a special required area;
(5) According to u =1-K 2 In the order of (1), influence the F in the group on the middle layer one by one 2u And P 2u Comparing the coincidence degrees of the two, synchronously secondarily optimizing the submarine cable route, and returning to the check Q 1 Inner F 1u And P 1u The conformity of (a); the secondary optimized submarine cable routing mainly comprises the following optimization measures of avoiding submarine cable laying influence factors, deepening submarine cable burial depth and newly adding submarine cable protection in sequence;
(6) According to u =1-K 3 In the order of F 3u Locally optimizing submarine cable routing, and influencing intra-group cable increase yield beta one by one on lower layers u And beta umin Performing comparison and judgment, and returning to check Q 1 Inner F 1u And P 1u Conformity and Q of 2 Inner F 2u And P 2u The conformity of (a); for F 3u The local optimization submarine cable routing mainly comprises optimization measures for avoiding bedrock and deep sea slope areas;
(7) And finally, outputting a submarine cable routing arrangement scheme with a layered optimization trend.
Further, in the step (2), three layers affect the group Q j The dividing steps are as follows:
(a) Defining an upper layer influence group Q 1 Wherein Q is 1 The submarine cable routing method comprises a submarine cable routing arrangement mode, a submarine cable distance, a submarine cable bending radius and a special requirement area, wherein the submarine cable routing arrangement mode comprises 4 types of chain type, ring type, star type and sectional type; the influence factors in the layer influence group are limited by the provisions specified by laws, regulations and standard specifications and are characterized by influencing the overall wiring principle;
(b) Defining middle layer influence group Q 2 Wherein Q is 2 Comprising a channel route, an anchor ground, a fishery operation area and sand waves; the influence factors in the layer influence groups are characterized by influencing the operation environment and the service life of the submarine cable;
(c) Defining an underlying influence group Q 3 Wherein Q is 3 Comprises bedrock and deep sea slope; the influence factors in the layer influence groups are characterized by influencing the complexity and the economy of the submarine cable construction operation.
Further, in the step (3), the effect P is expected 1u The method meets mandatory terms in strict compliance laws and regulations and standard standards, and can definitely reflect the overall layout of the submarine cable route, so that the problems of major violation and major economic loss of the submarine cable route arrangement scheme are avoided;
the desired effect P 2u The condition that the area possibly damaged by the submarine cable is avoided as much as possible according to the protection priority principle is met;
the expected cable increase profitability beta umin The investment increment caused by increasing the submarine cable is balanced with the cost reduction caused by reducing the protective measures, specifically comprising two aspects of construction cost and product material cost, the psychological expectation value of economic benefit brought by the investor to increasing the submarine cable is accurately reflected, and the beta value is beta umin Is 1.1-1.5.
Further, the lower layer in the step (6) influences the intra-group cable increase yield beta u The method for obtaining is as follows:
formula (1) includes the variables according to F 3u Submarine cable protection length reduction d after submarine cable routing optimization is carried out on influence factors u Optimized submarine cable increment l u The method comprises the following steps of (1) obtaining a submarine cable protection material unit price a, a submarine cable protection construction unit price b, a submarine cable unit price c and a submarine cable laying construction unit price d; beta in the step (6) u And beta umin The comparison and judgment method comprises the following steps: when beta is u ≥β umin In the process, a local optimization measure of a submarine cable route for increasing cable avoidance is adopted; when beta is u ＜β umin In time, submarine cable protection measures are adopted.
The invention has the beneficial technical effects that: (1) More influence factors in a complex sea area are considered, the optimization direction of the submarine cable is controlled from the whole area to the detailed area, and the method has stronger pertinence to the submarine cable routing arrangement under the condition of complex sea conditions.
(2) The submarine cable routing arrangement method carries out multiple feedback iterations among different layer influence groups, avoids the problem of considering each other under the condition of multi-factor influence, and has wider coverage of an optimization scheme.
(3) The submarine cable routing arrangement method not only considers the submarine cable operating environment, but also introduces the index of the yield of the cable increase, considers the economic benefit of the optimization scheme in a quantitative mode, and has higher feasibility for engineering practice.
Drawings
FIG. 1 is a flow chart of a hierarchical optimization-seeking arrangement method according to the present invention;
FIG. 2 is a wiring diagram of a chain type submarine cable routing arrangement;
FIG. 3 is a wiring diagram of a ring type submarine cable routing arrangement;
FIG. 4 is a wiring diagram of a star type submarine cable routing pattern;
FIG. 5 is a wiring diagram of a segmented submarine cable routing pattern;
FIG. 6 is a diagram of wind turbine layout and sea floor topography for offshore wind power engineering in a certain sea area;
FIG. 7 is a diagram showing arrangement and influence factor distribution of wind turbines in offshore wind power engineering in a certain sea area;
FIG. 8 is a sea state diagram of a preliminary optimization arrangement of submarine cable routing;
FIG. 9 is a topographical view of a preliminary optimized arrangement of submarine cable routes;
FIG. 10 is a sea state diagram of a hierarchical optimization arrangement of submarine cable routes;
fig. 11 is a topographic map of a hierarchical optimization arrangement of submarine cable routes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
As shown in fig. 1 to 11, the present invention provides a hierarchical optimization-oriented deployment method for sea cable routing under complex sea conditions, which comprises the following steps:
(1) Determining the number n of influence factors of submarine cable laying, defining i =1-n, and collecting the submarine cable laying influence factors F in the complex sea area i The distribution of (2);
(2) According to F i The degree of differential influence possibly generated is F i Dividing into three influence groups Q j Where j =1-3, layer j affects group Q j Has a total of K j An influence factor, defining Q j The influence factor in the influence group is F ju Wherein u =1-K j (ii) a Upper layer influence group Q 1 The submarine cable routing and wiring system comprises submarine cable routing and layout patterns, submarine cable intervals, submarine cable bending radii and special requirement areas, wherein the submarine cable routing and layout patterns comprise 4 types of chains, rings, stars and sections, detailed wiring modes of the 4 types of layout patterns are shown in figures 2-5, influence factors in a layer influence group are limited by terms specified by laws and regulations and specification standards, and the influence factors are characterized by influencing the overall wiring principle; middle layer influence group Q 2 Comprises a channel route, an anchor, a fishery operation area and sand waves; the layer influences the influence factors in the group and is characterized by influencing the operation environment and the service life of the submarine cable; lower influence group Q 3 Comprises bedrock and deep sea slope; the influence factors in the layer influence groups are characterized by influencing the complexity and the economy of the submarine cable construction operation.
(3) Set Q 1 、Q 2 Expected effect P of each influencing factor in the group 1u 、P 2u Setting Q 3 Expected cable gain beta for each impact factor in the impact cluster umin ；
Wherein, P 1u The mandatory terms in laws, regulations and standard standards are strictly followed, and the overall layout of the submarine cable route can be definitely reflected, so that the problems of major violation and major economic loss of the submarine cable route arrangement scheme are avoided; p 2u Avoiding the area possibly damaged by the submarine cable as much as possible according to the protection priority principle; beta is a umin Trade-off between increased investment due to the addition of sea cables and reduced cost due to protective measures, packagesThe method includes two aspects of construction cost and product material cost, and can accurately reflect the psychological expectation value of the investor for increasing the economic benefit brought by the submarine cable. According to engineering practice experience and related statistical data, beta umin Preferably 1.1-1.5. When beta is umin When the setting is higher, the investor only expects to adopt local optimization measures for increasing the length of the submarine cable when the unit cable length is increased to save more submarine cable protection cost.
(4) Setting a preliminary arrangement scheme of submarine cable routes according to u =1-K 1 In the order of (1), influence the F in the group on the upper layer one by one 1u And P 1u Comparing the conformity and synchronously optimizing the submarine cable route; the optimized submarine cable route mainly comprises the following optimization measures of changing the route arrangement mode, increasing the space between submarine cables, increasing the bending radius of the submarine cables and avoiding special required areas in sequence;
(5) According to u =1-K 2 In the order of (1), influence the F in the group on the middle layer one by one 2u And P 2u Comparing the coincidence degrees of the two signals, synchronously optimizing the submarine cable route for the second time, and returning to the check Q 1 Inner F 1u And P 1u The conformity of (a); the secondary optimized submarine cable routing mainly comprises the following optimization measures of avoiding submarine cable laying influence factors, deepening submarine cable burial depth and newly adding submarine cable protection in sequence;
(6) According to u =1-K 3 In the order of F 3u Locally optimizing submarine cable routing, and influencing intra-group cable increase yield beta one by one on lower layers u And beta umin Performing comparison and judgment, and returning to check Q 1 Inner F 1u And P 1u Conformity and Q of 2 Inner F 2u And P 2u The conformity of (a); for F 3u The local optimization submarine cable routing mainly comprises optimization measures for avoiding bedrock and deep sea slope areas; wherein the lower layer affects the in-group cable gain beta u The obtaining method comprises the following steps:
formula (1) includes the variables according to F 3u Sea cable routing optimization by influence factorReducing the length d of the submarine cable after chemical conversion u Optimized submarine cable increment l u The method comprises the following steps of (1) obtaining a submarine cable protection material unit price a, a submarine cable protection construction unit price b, a submarine cable unit price c and a submarine cable laying construction unit price d; beta in the step (6) u And beta umin The comparison and judgment method comprises the following steps: when beta is u ≥β umin In the process, a local optimization measure of a submarine cable route for increasing cable avoidance is adopted; when beta is u ＜β umin In time, submarine cable protection measures are adopted.
(7) And finally, outputting a submarine cable routing arrangement scheme with a layered optimization trend.
The following is an actual calculation example of the method of the present invention, and the wind power engineering at sea in a certain sea area is taken as an example to perform submarine cable routing arrangement, and fig. 6 shows the wind turbine arrangement and the submarine topography of the wind power plant.
(1) First, the number of factors affecting the laying of the submarine cable n =10, i =1-10 is defined i Sequentially arranging submarine cable routes, submarine cable intervals, submarine cable bending radii, special requirement areas, channel routes, anchor lands, fishery operation areas, sand waves, bedrocks and deep sea slopes, and acquiring submarine cable laying influence factors F in complex sea areas i The distribution of (2), wherein the deep sea slope can be determined according to the density of the deep sea lines in fig. 6, the greater the density of the deep sea lines means the greater the inclination of the sea bottom slope, and the rest of the influence factors are arranged as shown in fig. 7.
(2) According to F i The degree of differential influence that may be produced, F i Dividing the influence groups into an upper layer, a middle layer and a lower layer, wherein the number of influence factors in each layer of influence groups is respectively K from top to bottom 1 ＝4、K 2 ＝4、K 3 =2, as shown in table 1, define Q j The influence factor in the influence group is F ju Wherein j =1-3, u =1-K j 。
TABLE 1 certain engineering impact groups and impact factors F ju Layered watch
(3) Set Q 1 、Q 2 Influencing each influencing factor in the groupExpected effect P 1u 、P 2u As shown in Table 2, the expected cable growth gain β for each impact factor in the Q3 impact group is set umin ＝1.2。
TABLE 2 table of expected effect of certain engineering influence factor
(4) The regional wind turbine generator system is based on 28 wind turbine generators, based on a load balance principle, cable current-carrying capacity and thermal stability are considered, 7 wind turbine generators are determined to be a string, 4 strings of wind turbine generator loops are arranged, and a preliminary submarine cable routing arrangement scheme is set. Influencing F in the group on the upper layer one by one in the order of u =1-4 1u And P 1u Comparing the coincidence degrees and optimizing the submarine cable route according to the sequence of chain type, increasing the space between the submarine cables, increasing the bending radius of the submarine cables and avoiding the ecological protection area to obtain the primarily optimized submarine cable route arrangement mode as shown in figures 8-9, wherein the burial depth of the submarine cables is not less than 2m, and the arrangement mode accords with P 11 、P 12 、P 13 、P 14 The desired effect of (a).
(5) Influencing F in the group on the middle layers one by one in the order of u =1-4 2u And P 2u The degrees of conformity are compared. As can be seen from fig. 8-9, the preliminary optimized routing only has a very small amount of passing through the channel, the anchor, the fishing net area and the sand waves, and is limited by the arrangement positions of the landing points and the fans, so that the avoidance of the channel area inevitably causes the great increase of the length of the submarine cable, and the economic benefit is poor. Thus, for Q 2 Considering the secondary optimization of the submarine cable in the channel, anchor, fishing net and sand wave section without changing the primary optimized route, deepening the buried depth of the submarine cable by 1m in the traversing section to reduce the possibility of the submarine cable being damaged by the anchor, and the further optimized arrangement mode conforms to P 21 、P 22 、P 23 、P 24 Expected effect of, returning a check Q 1 Influence the in-group influence factor, which still corresponds to P, since the plan layout is the same as in FIGS. 8-9 11 、P 12 、P 13 、P 14 The desired effect of (a).
(6) For F 31 、F 32 Push-buttonThe sequential local optimization of submarine cable routes for matrix rock avoidance and deep sea slope avoidance to obtain the optimized submarine cable route arrangement mode is shown in fig. 10-11. The engineering submarine cable protection adopts a cast iron sleeve and concrete row protection mode. Through market research, the unit price a of the submarine cable protection material, the unit price b of submarine cable protection construction, the unit price c of the submarine cable and the unit price d of submarine cable laying construction are shown in table 3.
| a | b | c | d |
| 2000 yuan/m | 1000 Yuan/m | 1300 yuan/m | 200 yuan/m |
TABLE 3 submarine cable protection and submarine cable (material and construction) unit price table for certain project
Calculating the reduction length d of the submarine cable protection after avoiding the bedrock area 1 And an increase of submarine cable l 1 Calculating and avoiding the reduced length d of the submarine cable after the large slope (seabed equal-depth line dense) area is avoided 2 And an increase of submarine cable l 2 . Calculating the cable increase yield beta after the local optimization of the submarine cable route according to the formula (1) u As shown in table 4.
| u | 1 | 2 |
| d u (Rice) | 80 | 360 |
| l u (Rice) | 120 | 580 |
| β u | 1.33 | 1.24 |
TABLE 4 route optimization and cable increase profitability beta of a project u Watch (A)
As can be seen from Table 4, for u =1-2, β is satisfied for all u ≥β umin . Therefore, the locally optimized submarine cable routing scheme reduces investment of submarine cable protection measures under various influence factor conditions, and brings economic benefits meeting the expected yield of increased cables, so that the routing scheme after avoiding bedrock and deep sea slope areas is adopted. Further, a check Q is returned 1 、Q 2 Influence factors within the group, the arrangement being in accordance with P 11 、P 12 、P 13 、P 14 、P 21 、P 22 、P 23 、P 24 The desired effect of (a).
(7) Finally, the submarine cable routing arrangement scheme after the layered optimization improvement is obtained as shown in fig. 10-11, wherein the burial depth of the submarine cable is not less than 2m, and the burial depth of a small number of submarine cables passing through a channel, an anchor ground and a fishing net area is not less than 3m.
The submarine cable route layered optimization arrangement method under the complex sea condition can purposefully optimize the submarine cable route arrangement scheme in a layered mode through reasonably dividing influence factors in the complex sea area, and meanwhile effectively reflects the economic gain after the submarine cable route optimization through introducing the cable increase yield index. The method can be further popularized to complex sea areas under the action of more influence factors, and has a strong engineering application value.
The specific embodiments described herein are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (4)
1. A submarine cable routing layered optimization-seeking arrangement method under complex sea conditions is characterized in that: the arranging method comprises the following steps:
(1) Determining the number n of influence factors of submarine cable laying, defining i =1-n, and collecting the submarine cable laying influence factors F in the complex sea area i The distribution of (2);
(2) According to F i The degree of differential influence possibly generated is F i Dividing into three layers of influence groups Q j Where j =1-3, layer j affects group Q j Has a total of K j An influence factor, defining Q j The influence factor in the influence group is F ju Wherein u =1-K j ；
(3) Set Q 1 、Q 2 Expected effect P of each influencing factor in the group 1u 、P 2u Setting Q 3 Expected cable gain beta affecting each influencing factor in the group umin ；
(4) Setting a preliminary arrangement scheme of submarine cable routes according to u =1-K 1 In the order of (1), influence the F in the group on the upper layer one by one 1u And P 1u Comparing the coincidence degrees and synchronously optimizing the submarine cable route; the optimized submarine cable routing mainly comprises the steps of sequentially changing the routing arrangement mode, increasing the space between submarine cables and increasing the distance between submarine cablesOptimizing measures for the bending radius of the submarine cable and avoiding special required areas;
(5) According to u =1-K 2 In the order of (1), influence the F in the group on the middle layer one by one 2u And P 2u Comparing the coincidence degrees of the two signals, synchronously optimizing the submarine cable route for the second time, and returning to the check Q 1 Inner F 1u And P 1u The conformity of (a); the secondary optimized submarine cable routing mainly comprises the following optimization measures of avoiding submarine cable laying influence factors, deepening submarine cable burial depth and newly adding submarine cable protection in sequence;
(6) According to u =1-K 3 In the order of F 3u Locally optimizing submarine cable routing, and influencing intra-group cable increase yield beta one by one on lower layers u And beta umin Performing comparison and judgment, and returning to check Q 1 Inner F 1u And P 1u Conformity and Q of 2 Inner F 2u And P 2u The conformity of (a); for F 3u The local optimization submarine cable routing mainly comprises optimization measures for avoiding bedrock and deep sea slope areas;
(7) And finally, outputting a submarine cable routing arrangement scheme with a layered optimization trend.
2. The arrangement method according to claim 1, characterized in that: in the step (2), three layers affect the group Q j The dividing steps are as follows:
(a) Defining an upper influence group Q 1 Wherein Q is 1 The submarine cable routing method comprises submarine cable routing arrangement types, submarine cable intervals, submarine cable bending radii and special requirement areas, wherein the submarine cable routing arrangement types comprise 4 types of chain type, ring type, star type and sectional type; the influence factors in the layer influence group are limited by the provisions specified by laws, regulations and standard specifications and are characterized by influencing the overall wiring principle;
(b) Defining middle layer influence group Q 2 Wherein Q is 2 Comprising a channel route, an anchor ground, a fishery operation area and sand waves; the layer influences the influence factors in the group and is characterized by influencing the operation environment and the service life of the submarine cable;
(c) Defining an underlying influence group Q 3 Wherein Q is 3 Comprises bedrock and deep sea slope; the influence factors in the layer influence groups are characterized by influence sea cablesComplexity of construction operation and economy.
3. The arrangement method according to claim 1, characterized in that: in the step (3), the effect P is expected 1u The method meets mandatory terms in strict compliance laws and regulations and standard standards, and can definitely reflect the overall layout of the submarine cable route, so that the problems of major violation and major economic loss of the submarine cable route arrangement scheme are avoided;
the desired effect P 2u The condition that the area possibly damaged by the submarine cable is avoided as much as possible according to the protection priority principle is met;
the expected cable growth profitability beta umin The investment increment caused by increasing the submarine cable is balanced with the cost reduction caused by reducing the protective measures, specifically comprising two aspects of construction cost and product material cost, the psychological expectation value of economic benefit brought by the investor to increasing the submarine cable is accurately reflected, and the beta value is beta umin The value of (A) is 1.1-1.5.
4. The arranging method according to any one of claims 1 to 3, characterized in that: in the step (6), the yield beta of the cable increase in the group is influenced by the lower layer u The method for obtaining the compound is as follows:
formula (1) includes the variables according to F 3u Submarine cable protection length reduction d after submarine cable routing optimization is carried out by influence factors u Optimized submarine cable increment l u The method comprises the following steps of (1) obtaining a submarine cable protection material unit price a, a submarine cable protection construction unit price b, a submarine cable unit price c and a submarine cable laying construction unit price d; beta in the step (6) u And beta umin The comparison and judgment method comprises the following steps: when beta is u ≥β umin In the process, a local optimization measure of a submarine cable route for increasing cable avoidance is adopted; when beta is u ＜β umin In time, submarine cable protection measures are adopted.
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| CN103247977A (en) * | 2013-05-14 | 2013-08-14 | 国家电网公司 | Multiphase submarine cable transversal arrangement circularly laying construction method |
| CN104778375A (en) * | 2015-04-29 | 2015-07-15 | 中国电力工程顾问集团中南电力设计院有限公司 | Classifying-quantization submarine cable risk evaluation probability analysis method |
| CN105574663A (en) * | 2015-12-15 | 2016-05-11 | 中国南方电网有限责任公司超高压输电公司广州局 | Submarine cable protection based ship external destruction risk assessment method |
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| CN103247977A (en) * | 2013-05-14 | 2013-08-14 | 国家电网公司 | Multiphase submarine cable transversal arrangement circularly laying construction method |
| CN104778375A (en) * | 2015-04-29 | 2015-07-15 | 中国电力工程顾问集团中南电力设计院有限公司 | Classifying-quantization submarine cable risk evaluation probability analysis method |
| CN105574663A (en) * | 2015-12-15 | 2016-05-11 | 中国南方电网有限责任公司超高压输电公司广州局 | Submarine cable protection based ship external destruction risk assessment method |
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