CN105205551A - Long-distance buried oil and gas pipe network electrolytic coupling segmentation method for preventing geomagnetic storm disasters - Google Patents

Long-distance buried oil and gas pipe network electrolytic coupling segmentation method for preventing geomagnetic storm disasters Download PDF

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Publication number
CN105205551A
CN105205551A CN201510579466.6A CN201510579466A CN105205551A CN 105205551 A CN105205551 A CN 105205551A CN 201510579466 A CN201510579466 A CN 201510579466A CN 105205551 A CN105205551 A CN 105205551A
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station
geomagnetic storm
pipeline
pipe network
oil
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CN105205551B (en
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梁志珊
夏鹏程
张举丘
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China University of Petroleum Beijing CUPB
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China University of Petroleum Beijing CUPB
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Abstract

The invention relates to a long-distance buried oil and gas pipe network electrolytic coupling segmentation method for preventing geomagnetic storm disasters. The method comprises the steps that 1, aiming at a determined line, site selection of gas transmission stations and oil transmission stations is carried out according to the current standard; 2, geomagnetic storm disaster sudden change points of the line are found out through a pipe network geomagnetic storm disaster sudden change point scanning search method, and site selection optimization is carried out; 3, pipeline electrolytic coupling segmentation is carried out; 4, a segmentation result is output. According to the long-distance buried oil and gas pipe network electrolytic coupling segmentation method for preventing the geomagnetic storm disasters, geomagnetic induction current (GIC) and the pipe-to-soil potential (PSP) negative accumulation effect generated by the geomagnetic storm disasters in a long-distance electrical continuous buried oil and gas pipe network can be reduced, cathodic protection on a short-distance buried oil and gas pipeline can be further implemented, the capacity for the buried oil and gas pipeline to prevent the geomagnetic storm disasters is improved, and the service life of the pipeline and related equipment is prolonged.

Description

A kind ofly defend the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of geomagnetic storm disaster
Technical field
The present invention relates to buried oil gas pipe network resist technology field, be specifically related to a kind ofly defend the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of geomagnetic storm disaster.
Background technology
Long distance oil and gas pipeline has gas transmission station and transfer station every a segment distance, be provided with insulating flange at gas transmission station and transfer station import and export and electric isolution is carried out to pipeline, in order to power with easy to maintenance, pipeline cathode protection device is located at gas transmission station and transfer station, and with plain conductor, two segment pipes that gas transmission station and transfer station are imported and exported outside insulating flange are connected together, after the gas transmission station of whole piece pipeline and transfer station do all like this, the entirety linked together with wire is all become except gas transmission station and transfer station, pipeline integrity is electric continuity, like this, the cathodic protector established at each gas transmission station and transfer station can protect two segment pipes of both sides outside gas transmission station and transfer station, realize protection domain to maximize.Above-mentioned this whole piece pipeline is that the advantage of electric continuous print pipe protection collocation method is: designed potentiostat is simple, usage quantity is few and be easy to configuration.But, so just have ignored can cover whole piece pipeline the interference of electromagnetic field of overall importance on the impact of pipeline, such as space weather cause geomagnetic storm interference and with the high-voltage alternating DC transmission line interference etc. that pipeline sets up with corridor, cause geomagnetic induction current GIC (GeomagneticallyInducedCurrent) and pipe-to-soil potential PSP (PipetoSoilPotential) to present " negative " cumulative effect.
There is following problem in prior art:
(1) " negative " cumulative effect that electric continuous conduit is long
When space weather has magnetic storm to occur or when having an external alternating current-direct current stray current, due to the cumulative effect of whole piece pipeline, interference pipe-to-soil potential can the cumulative rises along with the increase of duct length.The stray current undesired signal of whole piece pipeline superposes " coupling " mutually, makes that a certain moment interference pipe-to-soil potential of one section of electric continuous conduit is contrary in two ends polarity, amplitude maximum and close to equal.And pipeline intervalve earth potential is lower.
(2) the pipeline accident common reporter such as big current causes potentiostat malfunctioningly even to burn, isolating joint over-voltage breakdown, Equipotential connector burn are flow through in neighbouring pipeline when high-voltage dc transmission electric monopole the earth runs, and the GIC that geomagnetic storm causes and direct current transportation current capacity are seemingly, therefore GIC is excessive also may cause the device damage such as potentiostat.
(3) prior art potentiostat control tool has a serious limitation
Prior art potentiostat does not have rejection ability to any stray current interference.That is, the starting point of prior art potentiostat design suppresses internal stray current interference, is not suppress the interference of outside stray current.Therefore, prior art potentiostat output single-pole output tool has a serious limitation and disadvantage.Facts have proved, the disadvantage of the unipolar output of potentiostat, the collocation method of prior art potentiostat causes electric continuous conduit long in addition, usually makes potentiostat not only not have effective protective effect to pipeline, also can play deterioration effect on the contrary.
In sum, current oil feed channel only takes insulated electro to isolate to gas transmission station and transfer station, outer oil and gas pipes entirety of standing is the conductor linked together by potentiostat cathode connection, and in the potentiostat collocation method of existing buried long oil and gas pipeline, pipeline is " being electrically connected continuous " property.But, when pipeline is long, geomagnetic storm interference of overall importance causes pipe-to-soil potential can the cumulative rises along with the increase of duct length, and the stray current undesired signal of whole piece pipeline superposes " coupling " mutually, thus makes original potentiostat lose resistant function to external stray current interference.And existing potentiostat is unipolar output, its can not convert output polarity with self-adaptation eliminate external direct current and alternative stray current interference and space weather cause earth magnetism stray current interference.
Summary of the invention
For the technical matters existed in prior art; the invention provides and a kind ofly defend the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of geomagnetic storm disaster; the method can reduce geomagnetic storm disaster and produce geomagnetic induction current GIC and pipe-to-soil potential PSP " negative " cumulative effect in the buried oil gas pipe network of long distance electric continuity; contribute to the cathodic protection implementing one section of buried oil and gas pipes of short distance further; improve the ability of buried oil and gas pipes defence geomagnetic storm disaster, extend pipeline and relevant device life-span.
To achieve these goals, the present invention adopts following technical scheme.
Defend the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of geomagnetic storm disaster, the method comprises the following steps:
Step one, for the circuit determined, carries out the addressing of gas transmission station and transfer station according to act.std;
Step 2, utilizes pipe network geomagnetic storm disaster catastrophe point scanning search method to find out the geomagnetic storm disaster catastrophe point of this circuit, carries out addressing optimization;
Step 3, the segmentation of pipeline electrolysis coupling;
Step 4, exports segmentation result.
Preferably, in described step one, comprise according to national act.std " GB50251-2003 code for design of gas transmission pipeline engineering " and " GB50253-2003 Oil Transportation Pipeline Engineering design specifications " according to act.std.
In above-mentioned arbitrary technical scheme preferably, in described step one, for the circuit determined, the setting carrying out gas transmission station according to national act.std " GB50251-2003 code for design of gas transmission pipeline engineering " and " GB50253-2003 Oil Transportation Pipeline Engineering design specifications " is comprised, requiring to include of setting according to act.std:
(1) setting of gas transmission station answers coincidence circuit trend and gas transmission technique to establish the requirement of juice, the suitable collaborative building of all kinds of gas transmission station;
(2) gas transmission station position is selected to meet the following requirements: physical features is mild, open; Power supply, water supply and drainage, live and have a good transport service; Should avoid mountain torrents, landslide harmful engineering ground location and the place at station should not be established; The regulation of existing national standards " GB50183-2015 petroleum gas engineering design fire prevention code " should be met with the safe distance of neighbouring factory, enterprise, warehouse, railway station and public utility;
(3) road traffic and the regulation of national act.std " GB50183-2015 petroleum gas engineering design fire prevention code ", " GB50016-2014 Code for fire protection design of buildings ", " SY/T0048-2009 petroleum gas engineering site Planning specification " should be met with the connection of extraneous highway in gas transmission station inner plane layout, fire safety, field.
In above-mentioned arbitrary technical scheme preferably, in described step one, for the circuit determined, the setting carrying out transfer station according to national act.std " GB50251-2003 code for design of gas transmission pipeline engineering " and " GB50253-2003 Oil Transportation Pipeline Engineering design specifications " is comprised, requiring to include of setting according to act.std:
(1) field addressing of standing should conform with the regulations;
(2) field layout of standing should conform with the regulations;
(3) station location selection of liquid liquefied petroleum gas pipeline station field should conform with the regulations;
(4) site of standing is selected the place that will avoid and should be conformed with the regulations;
(5) transfer station field does not allow the region of addressing should meet the regulation of national act.std " petroleum gas engineering site Planning specification " (SY/T0048);
(6) general layout in field, all kinds of station and base should conform with the regulations.
In above-mentioned arbitrary technical scheme preferably, the regulation that described field, station addressing should meet specifically comprises:
1. according to effective design entrusting book or contract, according to the regulation of country to engineering construction, and addressing must be carried out in conjunction with local rural and urban construction plans;
2. should meet the needs of pipework line alignment and route, meet the requirement of technological design; The regulation of laws and regulations of the existing fire safety of country, environmental protection, industrial hygiene should be met; The related request of residential area, industrial and mining enterprises, railway, highway should be met;
3. the fundamental state policy of saving the area should be implemented; Appropriate application soil. do not account for or account for good farmland, arable land less, making great efforts to expand land utilization ratio; Implement the laws and regulations of protection of the environment and water and soil conservation;
4. standing, should to be selected in physical features mild, open and avoid artificial earth fill, Earthquake Fault Zone in site, have good landform, landforms, engineering with hydrogeological condition and traffic be connected convenient, power supply, supply water, draining and worker society of living relies on all more conveniently local;
5., during selected stations site, there is the site area of enough production, safety and constructing operation the field that should ensure to stand, and suitably leaves room for development;
6. should together with the representative of the functional department of Construction Party and local government, common reconnaissance trip, multi-scheme compares, and rationally determines particular location and scope, forms file, includes design considerations in.
In above-mentioned arbitrary technical scheme preferably, the regulation that field, described station layout should meet specifically comprises:
1. site, Oil Transportation Pipeline Engineering initial station is selected, and should combine with the product oil storage field of the crude oil storage of the central treatment station in oil field, mining site, harbour, rail terminal, refinery and carry out, its position should meet the requirement of oil product outward transport;
2. site, Oil Transportation Pipeline Engineering terminal station is selected, should combine with the oil storage facility of the commercial oil-depot of the crude oil storage of petroleum chemical enterprise, rail terminal, port depot, product oil or oil product user and carry out, or conscientiously coordinate, meet the requirement coming oily orientation and route and metering aspect;
3. the position of through-station site meeting line alignment, field technological requirement of standing under meeting the prerequisite that firebreak specifies, should near villages and small towns, residential area;
4. the residential area that position, location, station, all kinds of station, field of standing are adjacent with surrounding, the firebreak of industrial and mining enterprises, should meet the regulation of existing national standards " Code for fire protection design of crude " (GB50153);
5. the control center of pipework, management company, maintenance repairing unit and worker construction home base should with site addressing simultaneously, and should be located at urban traffic convenient and coordinate with line alignment, place that social support condition is good;
6. block valve for pipeline room, with transfer station separate independent arranges cathodic protection station, communication relay station position selected, its design function requirement should be met.
In above-mentioned arbitrary technical scheme preferably, the regulation that the station location selection of described liquid liquefied petroleum gas pipeline station field should meet specifically comprises:
1. the requirement of overall city planning is met, and the area should concentrated away from urban community, villages and small towns, school, manufacturing district and cinema, gymnasium personnel;
2. should select the weather side of the annual minimum frequency wind direction in location, and should be the location that physical features is smooth, open, not easily accumulate liquefied petroleum gas (LPG), avoid minefield simultaneously;
3. forbid to arrange underground in liquid liquefied petroleum gas pipeline station field and semi-undergroundly to build, structures (underground tank and fire pump except); Underground pipe canal must fill dry sand; Storage tank and outside, station are built, the firebreak of structures, should meet the regulation of existing national standards " Code for design of city gas engineering " (GB5DD28).
In above-mentioned arbitrary technical scheme preferably, the regulation that the place that should avoid is selected in site, described station specifically comprises:
1. the dry detention basin avoiding low-lying easy ponding and rivers and the location having waterlogging to threaten;
2. in mountain area, the location that mountain torrents and rubble flow threaten to field, station should be avoided, should the location that prevents wind from passing through be avoided;
3. in mountain region, knob adopts to cut into a mountain and fills out ditch when building artificial place, should avoid the cheuch that mountain torrents flow through. prevent the backfill soil cubic meter of stone from caving in, run off; Guarantee the stable of Slag of standing;
4. flood, tidewater should be avoided or the area threatened of surging.
In above-mentioned arbitrary technical scheme preferably, the regulation that the general layout in described field, all kinds of station and base should meet specifically comprises:
1. the firebreak of Design of General Layout Plan and fire prevention measure, should meet the regulation of existing national standards " Code for fire protection design of crude " (GB50183);
2. the requirement of explosion proof in Design of General Layout Plan, should meet the regulation of national act.std " classification of petroleum installations electric device place " (SY/T0025);
3. to stand general layout requirement and Vertical Design in field and base, the regulation of national act.std " petroleum gas engineering site Planning specification } " (SY/T0048) should be met.
In above-mentioned arbitrary technical scheme preferably, in described step 2, utilize pipe network geomagnetic storm disaster catastrophe point scanning search method to find out line pipe entoilage magnetic storm disaster catastrophe point, comprise the steps:
(1) mechanism model that pipe network affects by geomagnetic storm is set up;
(2) pipeline parameter database is set up;
(3) pipe network ambient parameter data storehouse is set up;
(4) N kind geomagnetic storm pattern database is set up;
(5) geomagnetic storm disaster catastrophe point pattern is defined;
(6) computer tube webmaster earth potential DPSP distributes;
(7) search for catastrophe point and judge whether other geomagnetic storm pattern in addition;
(8) the identical mutation point of the various geomagnetic storm pattern that disappears;
(9) geomagnetic storm disaster catastrophe point evaluation index is defined.
In above-mentioned arbitrary technical scheme preferably, described (2) item set up pipeline parameter database, its pipeline parameter comprises pipeline inherent parameters, pipeline accessory constituent parameter, pipeline inherent parameters comprises resistance per unit length, structure and material composition character, and pipeline accessory constituent parameter comprises liquid in unit length admittance, structure and character, inside and outside coating composition and pipeline.
In above-mentioned arbitrary technical scheme preferably, described (3) item set up pipe network ambient parameter data storehouse, its pipe network environmental parameter comprises pipeline space factor, pipeline air semispace factor, pipeline soil semispace factor, pipeline coordinate system component variation rate factor, pipeline by the factor of Electromagnetic Sources distribution influence.Described pipeline space factor comprises: the air semispace and the soil semispace that form whole space, relates to the problem that pipeline makes somebody a mere figurehead laying and buried laying.Described pipeline air semispace factor comprises: the concentration of air themperature, humidity, composition of air, high mountain, river, low-temperature receiver, thermal source, ground cleave and terrain parameter.Described pipeline soil semispace factor comprises: the parameter of ground resistivity, soil acid-base salt, soil ph, soil ph, chemical composition of soil.Described pipeline coordinate system component variation rate factor comprises: rectangular coordinate system, spherical coordinate system, lean on coordinate system with component variation rate, relates to the parameter of pipeline turning, pipe branch and sea level elevation.Described pipeline comprises by the factor of Electromagnetic Sources distribution influence: D.C. high voltage transmission, high-voltage AC transmission, electric railway, geomagnetic storm, nuclear blast, thunder and lightning, terrestrial magnetic field, natural electric field and artificial electromagnetic field.
In above-mentioned arbitrary technical scheme preferably, the definition geomagnetic storm disaster catastrophe point pattern of described (5) item, its pattern comprises: pipeline end points Catastrophe Model---crescent moon peak, pipeline intermediate point Catastrophe Model---dovetail peak.Described pipeline end points Catastrophe Model---crescent moon peak: end points PSP monotone increasing or monotonic decreasing; If for a function f (x), x ∈ [a, b], at left end point place x=a place fight continuity and there is single order right-hand derivative f'(a), f'(a) < 0 or f'(a) > 0; In right endpoint place x=b place let continuous and there is single order left derivative f'(b), f'(b) < 0 or f'(b) > 0, then f (a) and f (b) graph of a correspondence are crescent moon peak.Described pipeline intermediate point Catastrophe Model---dovetail peak: PSP monotone increasing on the left of intermediate point, right side PSP monotonic decreasing; PSP monotone increasing on the left of intermediate point, right side PSP monotonic decreasing; If for a function f (x), x ∈ [a, b], at certain 1 x 0place continuously but there is not first order derivative f'(x 0), if at x 0left side first order derivative f'(x 0-) > 0 and at x 0right side first order derivative f'(x 0+) < 0, or at x 0left side first order derivative f'(x 0-) < 0 and at x 0right side first order derivative f'(x 0+) > 0, then f (x 0) corresponding to figure be dovetail peak.
In above-mentioned arbitrary technical scheme preferably, the computer tube webmaster earth potential DPSP of described (6) item distributes: from geomagnetic storm pattern database, select a kind of geomagnetic storm pattern k=1 arbitrarily, and the pipe network pipe-to-soil potential DPSP using pipe network mechanism model and given database to calculate this kind of geomagnetic storm pattern distributes.
In above-mentioned arbitrary technical scheme preferably, the search catastrophe point of described (7) item also judges whether other geomagnetic storm pattern in addition: according to the pipe network pipe-to-soil potential PSP distributed data DPSP of k kind geomagnetic storm pattern, pipeline geomagnetic storm disaster catastrophe point searching method is utilized to search for pipe network geomagnetic storm disaster catastrophe point, M k={ P k, 1, P k, 2..., P k, Qk; Wherein P k, Qkrepresent under kth kind geomagnetic storm Mode scans at pipe network Q kthe geomagnetic storm disaster catastrophe point that place's location finding arrives; Judge: if also have other geomagnetic storm pattern, k=k+1, proceeds to (7) step and circulate; The set of search pipe network geomagnetic storm disaster catastrophe point is: M 1={ P 1,1, P 1,2..., P 1, Q1, M 2={ P 2,1, P 2,2..., P 2, Q2..., M i={ P i, 1, P i, 2..., P i, Qi..., M n={ P n, 1, P n, 2..., P n, QN.
In above-mentioned arbitrary technical scheme preferably, the identical mutation point of the various geomagnetic storm pattern that disappears of described (8) item: after " OR " logical operation, disappear various geomagnetic storm pattern identical mutation point after, the set of pipe network geomagnetic storm disaster catastrophe point is: M=M 1(P 1,1, P 1,2..., P 1, Q1) UM 2(P 2,1, P 2,2..., P 2, Q2) U ... M i(P i, 1, P i, 2..., P i, Qi) U ... UM n(P n, 1, P n, 2..., P n, QN).
In above-mentioned arbitrary technical scheme preferably, described (9) definition geomagnetic storm disaster catastrophe point evaluation index: dovetail peak and the crescent moon peak PSP amplitude at definition geomagnetic storm disaster catastrophe point place are geomagnetic storm disaster catastrophe point evaluation index, sort to the set of pipe network geomagnetic storm disaster catastrophe point by evaluation index, the set obtaining the PSP evaluation index A of n catastrophe point position Q and correspondence thereof is: M=(Q 1,1, A 1,2; Q 2,1, A 2,2; Q i, 1, A i, 2; Q n, 1, A n, 2).
In above-mentioned arbitrary technical scheme preferably, in described step 2, pipe network geomagnetic storm disaster catastrophe point scanning search method specifically comprises the steps:
(1) given geomagnetic storm disaster catastrophe point threshold value ESP1;
(2) to pipeline node and branch number, node is N number of, and branch road is L bar;
(3) pipeline node N and branch road incidence matrix NL, branch road PSP distributed data DPSP [1:L is set up; PSP [1:L1 (1:L)]], wherein, L1 (a) represents the PSP data length of a branch road;
(4) from N number of node, any one node i=1 selected is as initial point, and definition pipe network end points number is C, and pipe network end points is geomagnetic storm disaster catastrophe point, so allow b=C+1, meanwhile, definition Metzler matrix stores geomagnetic storm disaster catastrophe point;
(5) from incidence matrix NL, the branch road j=1 adjacent with node i is selected;
(6) from distributed data DPSP, its PSP (1:L1 (j)) data are got;
(7) for pipeline intermediate point, if at an x 0left side (or right side) monotone increasing and at x 0right side (or left side) monotone decreasing, its x 0point is exactly doubtful geomagnetic storm disaster point; Further, if at x 0point place PSP value is greater than threshold value ESP1, its x 0point is exactly geomagnetic storm disaster point, stored in M (b), and b=b+1; Judge: if also have branch road not to be selected, just select next branch road j=j+1, proceed to (6) step and circulate;
(8) judge: if also have other node not to be selected, just select next node i=i+1, proceed to (5) step and circulate;
(9) output channel geomagnetic storm disaster dot matrix M (1:b).
In above-mentioned arbitrary technical scheme preferably; in described step 3; the segmentation of pipeline electrolysis coupling; consider defence geomagnetic storm disaster; buried oil and gas pipes should arrange the resistance to galvanic higher isolating joint of proof voltage at gas transmission station and transfer station import and export, and cathodic protector output cathode lead-in wire can not be connected across on the pipeline of isolating joint both sides, and the cathodic protector of cross-over connection should disconnect this bonding line; break pipe long-distance electric continuity, thus alleviate pipeline geomagnetic storm disaster.
In above-mentioned arbitrary technical scheme preferably; in described step 4; export segmentation result; preferred result is: gas transmission station and transfer station are located at pipeline geomagnetic storm disaster catastrophe point place; at gas transmission station and transfer station import and export, line insulation joint is set; disconnect the bonding line of cathodic protector output cathode on the pipeline of isolating joint both sides, reduce pipeline geomagnetic storm disaster to greatest extent.
The present invention defends the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of geomagnetic storm disaster, comprising: step one, for the circuit determined, carries out the addressing of gas transmission station and transfer station according to act.std; Step 2, utilizes pipe network geomagnetic storm disaster catastrophe point scanning search method to find out the geomagnetic storm disaster catastrophe point of this circuit, carries out addressing optimization; Step 3, the segmentation of pipeline electrolysis coupling; Step 4, exports segmentation result.The defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster of the present invention; geomagnetic storm disaster can be reduced in the buried oil gas pipe network of long distance electric continuity, produce geomagnetic induction current GIC and pipe-to-soil potential PSP " negative " cumulative effect; contribute to the cathodic protection implementing one section of buried oil and gas pipes of short distance further; improve the ability of buried oil and gas pipes defence geomagnetic storm disaster, extend pipeline and relevant device life-span.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the preferred embodiment according to the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of defence geomagnetic storm disaster of the present invention;
Fig. 2 finds out the schematic flow sheet of circuit geomagnetic storm disaster catastrophe point according to the pipeline geomagnetic storm disaster catastrophe point search procedure that utilizes of a preferred embodiment of the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of defence geomagnetic storm disaster of the present invention;
Fig. 3 is the pipe network geomagnetic storm disaster catastrophe point pattern diagram of the preferred embodiment according to the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of defence geomagnetic storm disaster of the present invention;
Fig. 4 is the pipe network geomagnetic storm disaster catastrophe point scanning search method schematic flow sheet of the preferred embodiment according to the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of defence geomagnetic storm disaster of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated, below describe only exemplarily and explain, any pro forma restriction is not done to the present invention.
In order to pipeline geomagnetic storm disaster catastrophe point can be reduced; reduce pipeline PSP " dovetail peak "; thus reduce the quantity of pipeline cathode protection device; and in order to reduce the mutation content of pipeline geomagnetic storm disaster catastrophe point PSP; thus save pipeline anticorrosion cost greatly; improve the ability of buried oil and gas pipes defence geomagnetic storm disaster; extend pipeline and relevant device life-span; design and a kind ofly defend the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of geomagnetic storm disaster; as shown in Figure 1; the method comprises four steps, is described as follows:
The first, for the circuit determined, the regulation according to national act.std " GB50251-2003 code for design of gas transmission pipeline engineering " and " GB50253-2003 Oil Transportation Pipeline Engineering design specifications " carries out the addressing of gas transmission station and transfer station.
Wherein, the setting of gas transmission station should meet following requirement:
(1) setting of gas transmission station answers coincidence circuit trend and gas transmission technique to establish the requirement of juice, and all kinds of gas transmission station should collaborative building.
(2) gas transmission station position is selected to meet the following requirements: physical features is mild, open; Power supply, water supply and drainage, live and have a good transport service; The harmful engineering ground location such as mountain torrents, landslide should be avoided and other should not establish the place at station; With the safety of neighbouring factory, enterprise, warehouse, railway station and other public utilities namely from the relevant regulations that should meet existing national standards " GB50183-2015 petroleum gas engineering design fire prevention code ".
(3) road traffic and the relevant regulations of national act.std " GB50183-2015 petroleum gas engineering design fire prevention code ", " GB50016-2014 Code for fire protection design of buildings ", " SY/T0048-2009 petroleum gas engineering site Planning specification " should be met with the connection of extraneous highway in gas transmission station inner plane layout, fire safety, field.
The setting of transfer station should meet following requirement:
(1) field addressing of standing should meet the following requirements:
1. according to effective design entrusting book or contract, according to the relevant regulations of country to engineering construction, and addressing must be carried out in conjunction with local rural and urban construction plans.
2. should meet the needs of pipework line alignment and route, meet the requirement of technological design; The regulation of the existing laws and regulations such as fire safety, environmental protection, industrial hygiene of country should be met; The related request of residential area, industrial and mining enterprises, railway, highway etc. should be met.
3. the fundamental state policy of saving the area should be implemented.Appropriate application soil. do not account for or account for good farmland, arable land less, making great efforts to expand land utilization ratio; Implement the relevant laws and regulations such as protection of the environment and water and soil conservation.
4. stand site should be selected in physical features mild, open, avoid artificial earth fill, Earthquake Fault Zone, have good landform, landforms, engineering with hydrogeological condition and traffic be connected convenient, power supply, supply water, draining and worker society of living relies on all more conveniently local.
5., during selected stations site, there is the site area of enough production, safety and constructing operation the field that should ensure to stand, and suitably leaves room for development.
6. should together with the representative of Construction Party and relevant functional departments of local government, common reconnaissance trip, multi-scheme compares, and rationally determines particular location and scope, forms file, includes design considerations in.
(2) field layout of standing should meet the following requirements:
1. site, Oil Transportation Pipeline Engineering initial station is selected, and should combine with the product oil storage field of the crude oil storage of the central treatment station in oil field, mining site, harbour, rail terminal, refinery and carry out, its position should meet the requirement of oil product outward transport.
2. site, Oil Transportation Pipeline Engineering terminal station is selected, should combine with the oil storage facility of the commercial oil-depot of the crude oil storage of petroleum chemical enterprise, rail terminal, port depot, product oil or other oil products user and carry out, or conscientiously coordinate, meet the requirement coming oily orientation and route and metering aspect.
3. the position of through-station site meeting line alignment, field technological requirement of standing under meeting the prerequisite that firebreak specifies, should near villages and small towns, residential area.
4. the firebreak in residential area, industrial and mining enterprises etc. that position, location, station, all kinds of station, field of standing are adjacent with surrounding, should meet the regulation of existing national standards " Code for fire protection design of crude " (GB50153).
5. the control center of pipework, management company, maintenance repairing unit and worker construction home base should with site addressing simultaneously, and should be located at urban traffic convenient and coordinate with line alignment, place that social support condition is good.
6. block valve for pipeline room, separate the independent cathodic protection station, communication relay station etc. that arrange with transfer station position selected, its design function requirement should be met.
(3) station location selection of liquid liquefied petroleum gas pipeline station field should meet the following requirements:
1. the requirement of overall city planning is met, and the area should concentrated away from urban community, villages and small towns, school, manufacturing district and the personnel such as cinema, gymnasium;
2. should select the weather side of the annual minimum frequency wind direction in location, and should be the location that physical features is smooth, open, not easily accumulate liquefied petroleum gas (LPG), avoid minefield simultaneously;
3. forbid to arrange underground in liquid liquefied petroleum gas pipeline station field and semi-undergroundly to build, structures (underground tank and fire pump except).Underground pipe canal must fill dry sand; Storage tank and outside, station are built, the firebreak of structures, should meet the regulation of existing national standards " Code for design of city gas engineering " (GB5DD28).
(4) standing, site is selected should avoid following place:
1. the dry detention basin avoiding low-lying easy ponding and rivers and the location having waterlogging to threaten.
2. in mountain area, the location that mountain torrents and rubble flow threaten to field, station should be avoided, should the location that prevents wind from passing through be avoided.
3. in mountain region, knob adopts to cut into a mountain and fills out ditch when building artificial place, should avoid the cheuch that mountain torrents flow through. prevent the backfill soil cubic meter of stone from caving in, run off.Guarantee the stable of Slag of standing.
4. flood, tidewater should be avoided or the area threatened of surging.
(5) transfer station field does not allow the region of addressing should meet the regulation of national act.std " petroleum gas engineering site Planning specification " (SY/T0048).
(6) general layout in field, all kinds of station and base should meet the following requirements:
1. the firebreak of Design of General Layout Plan and fire prevention measure, should meet the regulation of existing national standards " Code for fire protection design of crude " (GB50183).
2. the requirement of explosion proof in Design of General Layout Plan, should meet the regulation of national act.std " classification of petroleum installations electric device place " (SY/T0025).
3. to stand general layout requirement and Vertical Design in field and base, the regulation of national act.std " petroleum gas engineering site Planning specification } " (SY/T0048) should be met.
Second; addressing is optimized; utilize pipe network geomagnetic storm disaster catastrophe point scanning search method (PipeNetworksGeomagneticStormsdisastersmutationPointScann ingSearchmethod; be called for short PNGSPSS method) find out the geomagnetic storm disaster catastrophe point of this circuit; to the addressing optimization of gas transmission station and transfer station; gas transmission station and transfer station should be arranged on pipeline geomagnetic storm disaster catastrophe point place as far as possible; to facilitate the cathodic protection implementing the insulation segmentation of pipeline electrolysis coupling and defence geomagnetic storm, the most effectively reduce pipeline geomagnetic storm disaster.
As shown in Figure 2, PNGSPSS method is used to find the step of pipe network geomagnetic storm disaster catastrophe point to be:
(1) mechanism model that pipe network affects by geomagnetic storm is set up.
(2) pipeline parameter database is set up.Pipeline parameter comprises: the parameters such as pipeline self (resistance per unit length, structure (diameter and thickness) and material composition character), pipeline accessory constituent (in unit length admittance, structure and character, inside and outside coating composition and pipeline liquid etc.).
(3) pipe network ambient parameter data storehouse is set up.Pipe network environmental parameter comprises: pipeline space factor, pipeline air semispace factor, pipeline soil semispace factor, pipeline coordinate system component variation rate factor, pipeline are subject to factor and pipeline other factors or the parameter etc. of Electromagnetic Sources distribution influence.
Pipeline space factor mainly comprises: form the air semispace in whole space and soil semispace etc., relates to that pipeline is built on stilts to be laid and the problem such as buried laying.Pipeline air semispace factor mainly comprises: the concentration of air themperature, humidity, composition of air (acid, alkali and salt content), high mountain, river, low-temperature receiver, thermal source, ground cleave and terrain parameter etc.Pipeline soil semispace factor mainly comprises: the parameters such as ground resistivity, soil acid-base salt, soil ph, soil ph, chemical composition of soil.Pipeline coordinate system component variation rate factor mainly comprises: rectangular coordinate system, spherical coordinate system, lean on coordinate system etc. with component variation rate, relates to the parameters such as pipeline turning, pipe branch and sea level elevation.Pipeline mainly comprises by the factor of Electromagnetic Sources distribution influence: D.C. high voltage transmission, high-voltage AC transmission, electric railway, geomagnetic storm, nuclear blast, thunder and lightning, terrestrial magnetic field, natural electric field and other artificial electromagnetic field etc.
(4) N kind geomagnetic storm pattern database is set up.
(5) geomagnetic storm disaster catastrophe point pattern is defined.
Pipeline end points Catastrophe Model---crescent moon peak: end points PSP monotone increasing or monotonic decreasing; Pipeline intermediate point Catastrophe Model---dovetail peak: PSP monotone increasing on the left of intermediate point, right side PSP monotonic decreasing; PSP monotone increasing on the left of intermediate point, right side PSP monotonic decreasing, as shown in Figure 3.
Note: definition 1, if for a function f (x), x ∈ [a, b], at left end point place x=a place fight continuity and there is single order right-hand derivative f'(a), f'(a) < 0 or f'(a) > 0; In right endpoint place x=b place let continuous and there is single order left derivative f'(b), f'(b) < 0 or f'(b) > 0, then f (a) and f (b) graph of a correspondence are just called crescent moon peak, as shown in Figure 3.
Definition 2, if for a function f (x), x ∈ [a, b], at certain 1 x 0place continuously but there is not first order derivative f'(x 0), if at x 0left side first order derivative f'(x 0-) > 0 and at x 0right side first order derivative f'(x 0+) < 0, or at x 0left side first order derivative f'(x 0-) < 0 and at x 0right side first order derivative f'(x 0+) > 0, then f (x 0) corresponding to figure be just called dovetail peak.
(6) from geomagnetic storm pattern database, a kind of geomagnetic storm pattern k=1 is selected arbitrarily.The pipe network pipe-to-soil potential DPSP using pipe network mechanism model and given database to calculate this kind of geomagnetic storm pattern distributes.
(7) according to the pipe network pipe-to-soil potential PSP distributed data DPSP of k kind geomagnetic storm pattern, " pipeline geomagnetic storm disaster catastrophe point searching method " is utilized to search for pipe network geomagnetic storm disaster catastrophe point, M k={ P k, 1, P k, 2..., P k, Qk.Wherein P k, Qkrepresent under kth kind geomagnetic storm Mode scans at pipe network Q kthe geomagnetic storm disaster catastrophe point that place's location finding arrives.Judge: if also have other geomagnetic storm pattern, k=k+1, proceeds to (7) step and circulate.
The set of search pipe network geomagnetic storm disaster catastrophe point is:
M 1={P 1,1,P 1,2,…,P 1,Q1}、M 2={P 2,1,P 2,2,…,P 2,Q2}、…、M i={P i,1,P i,2,…,P i,Qi}、…、M N={P N,1,P N,2,…,P N,QN}。
(8), after " OR " logical operation, after the identical mutation point of the various geomagnetic storm pattern that disappears, the set of pipe network geomagnetic storm disaster catastrophe point is:
M=M 1(P 1,1,P 1,2,…,P 1,Q1)UM 2(P 2,1,P 2,2,…,P 2,Q2)U…M i(P i,1,P i,2,…,P i,Qi)U…UM N(P N,1,P N,2,…,P N,QN)
(9) the dovetail peak and the crescent moon peak PSP amplitude that define geomagnetic storm disaster catastrophe point place are geomagnetic storm disaster catastrophe point evaluation index.Sort to the set of pipe network geomagnetic storm disaster catastrophe point by evaluation index, the set obtaining the PSP evaluation index A of n catastrophe point position Q and correspondence thereof is:
M=(Q 1,1,A 1,2;Q 2,1,A 2,2;…;Q i,1,A i,2;…;Q n,1,A n,2)。
As shown in Figure 4, pipeline geomagnetic storm disaster catastrophe point searching method, comprises the following steps:
(1) given geomagnetic storm disaster catastrophe point threshold value ESP1;
(2) to pipeline node and branch number (node is N number of and branch road is L bar);
(3) pipeline node N and branch road incidence matrix NL, branch road PSP distributed data DPSP [1:L is set up; PSP [1:L1 (1:L)]], wherein, L1 (a) represents the PSP data length of a branch road;
(4) from N number of node, any one node i=1 selected is as initial point, and definition pipe network end points number is C, and pipe network end points is geomagnetic storm disaster catastrophe point, so allow b=C+1, meanwhile, definition Metzler matrix stores geomagnetic storm disaster catastrophe point;
(5) from incidence matrix NL, the branch road j=1 adjacent with node i is selected;
(6) from distributed data DPSP, its PSP (1:L1 (j)) data are got;
(7) for pipeline intermediate point, if at an x 0left side (or right side) monotone increasing and at x 0right side (or left side) monotone decreasing, its x 0point is exactly doubtful geomagnetic storm disaster point.Further, if at x 0point place PSP value is greater than threshold value ESP1, its x 0point is exactly geomagnetic storm disaster point, stored in M (b), and b=b+1.Judge: if also have branch road not to be selected, just select next branch road j=j+1, proceed to (6) step and circulate;
(8) judge: if also have other node not to be selected, just select next node i=i+1, proceed to (5) step and circulate;
(9) output channel geomagnetic storm disaster dot matrix M (1:b).
3rd; the segmentation of pipeline electrolysis coupling; consider defence geomagnetic storm disaster; buried oil and gas pipes should arrange the resistance to galvanic higher isolating joint of proof voltage at gas transmission station and transfer station import and export; cathodic protector output cathode lead-in wire can not be connected across on the pipeline of isolating joint both sides; the cathodic protector of cross-over connection should disconnect this bonding line, breaks pipe long-distance electric continuity, thus alleviates pipeline geomagnetic storm disaster.
4th; export segmentation result; preferred result is: gas transmission station and transfer station are located at pipeline geomagnetic storm disaster catastrophe point place; at gas transmission station and transfer station import and export, line insulation joint is set; disconnect the bonding line of cathodic protector output cathode on the pipeline of isolating joint both sides, reduce pipeline geomagnetic storm disaster to greatest extent.
The above is only be described the preferred embodiment of the present invention; not that scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineering technical personnel in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.

Claims (10)

1. defend the defeated buried oil gas pipe network electrolysis coupling segmentation method of the length of geomagnetic storm disaster, the method comprises the following steps:
Step one, for the circuit determined, carries out the addressing of gas transmission station and transfer station according to act.std;
Step 2, utilizes pipe network geomagnetic storm disaster catastrophe point scanning search method to find out the geomagnetic storm disaster catastrophe point of this circuit, carries out addressing optimization;
Step 3, the segmentation of pipeline electrolysis coupling;
Step 4, exports segmentation result.
2. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 1, it is characterized in that: in described step one, described is comprise according to national act.std " GB50251-2003 code for design of gas transmission pipeline engineering " and " GB50253-2003 Oil Transportation Pipeline Engineering design specifications " according to act.std.
3. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 1 or 2, it is characterized in that: in described step one, for the circuit determined, the setting carrying out gas transmission station according to national act.std " GB50251-2003 code for design of gas transmission pipeline engineering " and " GB50253-2003 Oil Transportation Pipeline Engineering design specifications " is comprised, requiring to include of setting according to act.std:
(1) setting of gas transmission station answers coincidence circuit trend and gas transmission technique to establish the requirement of juice, the suitable collaborative building of all kinds of gas transmission station;
(2) gas transmission station position is selected to meet the following requirements: physical features is mild, open; Power supply, water supply and drainage, live and have a good transport service; Should avoid mountain torrents, landslide harmful engineering ground location and the place at station should not be established; The regulation of existing national standards " GB50183-2015 petroleum gas engineering design fire prevention code " should be met with the safe distance of neighbouring factory, enterprise, warehouse, railway station and public utility;
(3) road traffic and the regulation of national act.std " GB50183-2015 petroleum gas engineering design fire prevention code ", " GB50016-2014 Code for fire protection design of buildings ", " SY/T0048-2009 petroleum gas engineering site Planning specification " should be met with the connection of extraneous highway in gas transmission station inner plane layout, fire safety, field.
4. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 1 or 2, it is characterized in that: in described step one, for the circuit determined, the setting carrying out transfer station according to national act.std " GB50251-2003 code for design of gas transmission pipeline engineering " and " GB50253-2003 Oil Transportation Pipeline Engineering design specifications " is comprised, requiring to include of setting according to act.std:
(1) field addressing of standing should conform with the regulations;
(2) field layout of standing should conform with the regulations;
(3) station location selection of liquid liquefied petroleum gas pipeline station field should conform with the regulations;
(4) site of standing is selected the place that will avoid and should be conformed with the regulations;
(5) transfer station field does not allow the region of addressing should meet the regulation of national act.std " petroleum gas engineering site Planning specification " (SY/T0048);
(6) general layout in field, all kinds of station and base should conform with the regulations.
5. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 4, is characterized in that: the regulation that field, the station addressing of described (1) item should meet specifically comprises:
1. according to effective design entrusting book or contract, according to the regulation of country to engineering construction, and addressing must be carried out in conjunction with local rural and urban construction plans;
2. should meet the needs of pipework line alignment and route, meet the requirement of technological design; The regulation of laws and regulations of the existing fire safety of country, environmental protection, industrial hygiene should be met; The related request of residential area, industrial and mining enterprises, railway, highway should be met;
3. the fundamental state policy of saving the area should be implemented; Appropriate application soil. do not account for or account for good farmland, arable land less, making great efforts to expand land utilization ratio; Implement the laws and regulations of protection of the environment and water and soil conservation;
4. standing, should to be selected in physical features mild, open and avoid artificial earth fill, Earthquake Fault Zone in site, have good landform, landforms, engineering with hydrogeological condition and traffic be connected convenient, power supply, supply water, draining and worker society of living relies on all more conveniently local;
5., during selected stations site, there is the site area of enough production, safety and constructing operation the field that should ensure to stand, and suitably leaves room for development;
6. should together with the representative of the functional department of Construction Party and local government, common reconnaissance trip, multi-scheme compares, and rationally determines particular location and scope, forms file, includes design considerations in.
6. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 4, is characterized in that: the regulation that field, the station layout of described (2) item should meet specifically comprises:
1. site, Oil Transportation Pipeline Engineering initial station is selected, and should combine with the product oil storage field of the crude oil storage of the central treatment station in oil field, mining site, harbour, rail terminal, refinery and carry out, its position should meet the requirement of oil product outward transport;
2. site, Oil Transportation Pipeline Engineering terminal station is selected, should combine with the oil storage facility of the commercial oil-depot of the crude oil storage of petroleum chemical enterprise, rail terminal, port depot, product oil or oil product user and carry out, or conscientiously coordinate, meet the requirement coming oily orientation and route and metering aspect;
3. the position of through-station site meeting line alignment, field technological requirement of standing under meeting the prerequisite that firebreak specifies, should near villages and small towns, residential area;
4. the residential area that position, location, station, all kinds of station, field of standing are adjacent with surrounding, the firebreak of industrial and mining enterprises, should meet the regulation of existing national standards " Code for fire protection design of crude " (GB50153);
5. the control center of pipework, management company, maintenance repairing unit and worker construction home base should with site addressing simultaneously, and should be located at urban traffic convenient and coordinate with line alignment, place that social support condition is good;
6. block valve for pipeline room, with transfer station separate independent arranges cathodic protection station, communication relay station position selected, its design function requirement should be met.
7. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 4, is characterized in that: the regulation that the station location selection of the liquid liquefied petroleum gas pipeline station field of described (3) item should meet specifically comprises:
1. the requirement of overall city planning is met, and the area should concentrated away from urban community, villages and small towns, school, manufacturing district and cinema, gymnasium personnel;
2. should select the weather side of the annual minimum frequency wind direction in location, and should be the location that physical features is smooth, open, not easily accumulate liquefied petroleum gas (LPG), avoid minefield simultaneously;
3. forbid to arrange underground in liquid liquefied petroleum gas pipeline station field and semi-undergroundly to build, structures (underground tank and fire pump except); Underground pipe canal must fill dry sand; Storage tank and outside, station are built, the firebreak of structures, should meet the regulation of existing national standards " Code for design of city gas engineering " (GB5DD28).
8. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 4, is characterized in that: the regulation that the place that should avoid is selected in the site, station of described (4) item specifically comprises:
1. the dry detention basin avoiding low-lying easy ponding and rivers and the location having waterlogging to threaten;
2. in mountain area, the location that mountain torrents and rubble flow threaten to field, station should be avoided, should the location that prevents wind from passing through be avoided;
3. in mountain region, knob adopts to cut into a mountain and fills out ditch when building artificial place, should avoid the cheuch that mountain torrents flow through. prevent the backfill soil cubic meter of stone from caving in, run off; Guarantee the stable of Slag of standing;
4. flood, tidewater should be avoided or the area threatened of surging.
9. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 4, is characterized in that: the regulation that the described field, all kinds of station of (6) item and the general layout in base should meet specifically comprises:
1. the firebreak of Design of General Layout Plan and fire prevention measure, should meet the regulation of existing national standards " Code for fire protection design of crude " (GB50183);
2. the requirement of explosion proof in Design of General Layout Plan, should meet the regulation of national act.std " classification of petroleum installations electric device place " (SY/T0025);
3. to stand general layout requirement and Vertical Design in field and base, the regulation of national act.std " petroleum gas engineering site Planning specification } " (SY/T0048) should be met.
10. the defeated buried oil gas pipe network electrolysis coupling segmentation method of length of defence geomagnetic storm disaster as claimed in claim 1, it is characterized in that: in described step 2, utilize pipe network geomagnetic storm disaster catastrophe point scanning search method to find out line pipe entoilage magnetic storm disaster catastrophe point, comprise the steps:
(1) mechanism model that pipe network affects by geomagnetic storm is set up;
(2) pipeline parameter database is set up;
(3) pipe network ambient parameter data storehouse is set up;
(4) N kind geomagnetic storm pattern database is set up;
(5) geomagnetic storm disaster catastrophe point pattern is defined;
(6) computer tube webmaster earth potential DPSP distributes;
(7) search for catastrophe point and judge whether other geomagnetic storm pattern in addition;
(8) the identical mutation point of the various geomagnetic storm pattern that disappears;
Definition geomagnetic storm disaster catastrophe point evaluation index.
CN201510579466.6A 2015-09-11 2015-09-11 A kind of defeated buried oil gas pipe network electrolysis coupling segmentation method of length for defending geomagnetic storm disaster Expired - Fee Related CN105205551B (en)

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