Anti-seismic design method and system suitable for suspension type equipment

Abstract

The invention provides an aseismic design method and system suitable for suspension type equipment, and the method comprises the steps: obtaining a site adjustment coefficient corresponding to the suspension type equipment according to the type of a site where the suspension type equipment is located and a design basic seismic acceleration under the type of the site; based on the site adjustment coefficient, constructing an earthquake influence coefficient curve of the suspension type equipment; based on a seismic oscillation time history corresponding to the seismic influence coefficient curve, performing an anti-seismic performance test on the suspension type equipment to obtain a test result that whether the anti-seismic performance of the suspension type equipment is qualified or not; when the anti-seismic performance test result of the suspension type equipment is unqualified, carrying out anti-seismic structure optimization on the suspension type equipment; according to the method, a solution is provided for the seismic design difficulty of the suspension type equipment, the designed seismic method is more suitable for the suspension type equipment, and then the seismic performance of the suspension type equipment is improved.

Description

Technical Field

[0001] The patent application of this invention belongs to the field of earthquake-resistant technology for power facilities, and specifically relates to an earthquake-resistant design method and system suitable for suspended equipment. Background Art

[0002] At present, many converter stations and substations are inevitably built in strong earthquake zones, facing huge earthquake disaster risks. In previous major earthquakes, the power facilities in the stations were severely damaged, which not only caused huge economic losses, but also seriously affected earthquake relief and social life.

[0003] In order to ensure that the electrical equipment in the station meets the corresponding seismic fortification requirements, it is necessary to carry out seismic design of the electrical equipment. Most of the electrical equipment in substations and converter stations are supported equipment installed on ground foundations or brackets, and a small number of equipment are suspended equipment suspended on the top of the structure, such as suspended converter valves, suspended filters, etc. The structural period of supported electrical equipment is often close to the earthquake's dominant period, and structural resonance is prone to occur. Its seismic performance is closely related to its mechanical safety, while the structural period of suspended equipment is long, and the main seismic problem is large seismic displacement. The structural characteristics and earthquake damage modes of the two are not the same. The current seismic design standard for power facilities only stipulates the seismic design response spectrum expression before the period of 6s, while the structural period of suspended electrical equipment represented by suspended converter valves often exceeds 6s (such as Figure 1 As shown in the figure, the earthquake component after the period of 6s has an important influence on the seismic response of suspended electrical equipment and cannot be ignored. Suspended electrical equipment cannot obtain effective excitation under the earthquake action specified in the current standards; therefore, the current seismic design response spectrum of power facilities is mainly aimed at supported equipment and is not suitable for suspended equipment in the station. Suspended equipment represented by suspended converter valves is prone to become a difficulty in the seismic design of electrical equipment in the station. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention patent application proposes a seismic design method applicable to suspended equipment, comprising:

[0005] According to the site category of the suspended equipment and the design basic seismic acceleration under the site category, obtaining the site adjustment coefficient corresponding to the suspended equipment;

[0006] Based on the site adjustment coefficient, constructing a seismic influence coefficient curve of the suspended equipment;

[0007] Based on the seismic motion time history corresponding to the seismic influence coefficient curve, the seismic performance test of the suspended equipment is performed to obtain a test result of whether the seismic performance of the suspended equipment is qualified;

[0008] When the seismic performance test result of the suspension equipment is unqualified, the seismic structure of the suspension equipment is optimized.

[0009] Preferably, constructing the seismic influence coefficient curve of the suspended equipment based on the site adjustment coefficient includes:

[0010] Based on the site adjustment coefficient, obtaining the seismic influence coefficient of the suspended equipment under different natural vibration periods;

[0011] According to the seismic influence coefficient of the suspended equipment under different natural vibration periods, a seismic influence coefficient curve of the suspended equipment is constructed.

[0012] Preferably, the expression corresponding to the seismic influence coefficient curve of the suspended equipment is as follows:

[0013]

[0014] Among them, α s represents the seismic influence coefficient; η1 represents the downward slope adjustment coefficient; η2 represents the damping adjustment coefficient; η3 represents the site adjustment coefficient of the maximum value of the seismic influence coefficient; γ represents the attenuation exponent; T g represents characteristic period; T represents natural oscillation period; α max represents the maximum value of the earthquake influence coefficient; p represents the first associated value; q represents the second associated value; r represents the third associated value; u represents the fourth associated value; t represents the fifth associated value; w represents the sixth associated value; p γ represents the attenuation result of γ attenuation on the first correlation value p; A represents the first natural oscillation period value; B represents the second natural oscillation period value; C represents the third natural oscillation period value; D represents the fourth natural oscillation period value; E represents the fifth natural oscillation period value.

[0015] Preferably, the fifth natural oscillation period value E=6s.

[0016] Preferably, the seismic performance test includes one or more of the following: foundation component strength test, displacement test and electrical performance test.

[0017] Preferably, the seismic performance test of the suspended equipment is performed based on the seismic motion time history corresponding to the seismic influence coefficient curve to obtain a test result of whether the seismic performance of the suspended equipment is qualified, including:

[0018] Using the seismic motion time history corresponding to the seismic influence coefficient curve as seismic motion input to simulate an earthquake scenario, and using a computational analysis method or a shaking table test method to perform a seismic performance test on the suspended equipment under the earthquake scenario to obtain seismic response indicators of the suspended equipment under different seismic performance tests;

[0019] According to the seismic response index of the suspension equipment under different seismic performance tests, a test result of whether the seismic performance of the suspension equipment is qualified is obtained.

[0020] Preferably, the calculation and analysis method includes one or more of the following: mode decomposition response spectrum method and dynamic time history analysis method.

[0021] Preferably, the seismic response index corresponding to the foundation component strength test is the mechanical property of the foundation component; the seismic response index corresponding to the displacement test is the seismic displacement value of the selected position; and the seismic response index corresponding to the electrical performance test is the electrical performance parameter value.

[0022] Preferably, obtaining a test result of whether the seismic performance of the suspension equipment is qualified according to the seismic response index of the suspension equipment under different seismic performance tests includes:

[0023] Comparing the seismic response index of the suspended equipment under different seismic performance tests with the index determination requirements corresponding to the seismic response index;

[0024] If the seismic response index of the suspended equipment under different seismic performance tests meets the corresponding index determination requirements, the seismic performance test result of the suspended equipment is qualified;

[0025] If the seismic response index of the suspension equipment under any seismic performance test fails to meet the corresponding index determination requirement, the seismic performance test result of the suspension equipment is unqualified.

[0026] Preferably, when the seismic performance test result of the suspension equipment is unqualified, optimizing the seismic structure of the suspension equipment comprises:

[0027] When the seismic performance test result of the suspension equipment is unqualified, it is obtained that the seismic response index of the suspension equipment during the seismic performance test does not meet the seismic response index under the corresponding index judgment requirement;

[0028] Based on the fact that the seismic response index does not satisfy the seismic response index under the corresponding index determination requirement, the seismic resistant structure of the suspended equipment is optimized.

[0029] Based on the same inventive concept, the patent application of the present invention also provides a seismic design system suitable for suspended equipment, including:

[0030] A site adjustment coefficient acquisition module is used to obtain the site adjustment coefficient corresponding to the suspended equipment according to the site category of the suspended equipment and the design basic seismic acceleration under the site category;

[0031] A coefficient curve building module: used to build a seismic influence coefficient curve of the suspended equipment based on the site adjustment coefficient;

[0032] Seismic performance test module: used to perform seismic performance test on the suspended equipment based on the seismic time history corresponding to the seismic influence coefficient curve, and obtain a test result of whether the seismic performance of the suspended equipment is qualified;

[0033] Seismic structure optimization module: used to optimize the seismic structure of the suspended equipment when the seismic performance test result of the suspended equipment is unqualified.

[0034] Preferably, the coefficient curve construction module is specifically used for:

[0035] Based on the site adjustment coefficient, obtaining the seismic influence coefficient of the suspended equipment under different natural vibration periods;

[0036] According to the seismic influence coefficient of the suspended equipment under different natural vibration periods, a seismic influence coefficient curve of the suspended equipment is constructed.

[0037] Preferably, the expression corresponding to the seismic influence coefficient curve of the suspended equipment in the coefficient curve building module is as follows:

[0038]

[0039] Among them, α s represents the seismic influence coefficient; η1 represents the downward slope adjustment coefficient; η2 represents the damping adjustment coefficient; η3 represents the site adjustment coefficient of the maximum value of the seismic influence coefficient; γ represents the attenuation exponent; T g represents characteristic period; T represents natural oscillation period; α max represents the maximum value of the earthquake influence coefficient; p represents the first associated value; q represents the second associated value; r represents the third associated value; u represents the fourth associated value; t represents the fifth associated value; w represents the sixth associated value; p γ represents the attenuation result of γ attenuation on the first correlation value p; A represents the first natural oscillation period value; B represents the second natural oscillation period value; C represents the third natural oscillation period value; D represents the fourth natural oscillation period value; E represents the fifth natural oscillation period value.

[0040] Preferably, the fifth natural oscillation period value E in the coefficient curve construction module is 6s.

[0041] Preferably, the seismic performance test in the seismic performance test module includes one or more of the following: foundation component strength test, displacement test and electrical performance test.

[0042] Preferably, the seismic performance testing module is specifically used for:

[0043] Using the seismic motion time history corresponding to the seismic influence coefficient curve as seismic motion input to simulate an earthquake scenario, and using a computational analysis method or a shaking table test method to perform a seismic performance test on the suspended equipment under the earthquake scenario to obtain seismic response indicators of the suspended equipment under different seismic performance tests;

[0044] According to the seismic response index of the suspension equipment under different seismic performance tests, a test result of whether the seismic performance of the suspension equipment is qualified is obtained.

[0045] Preferably, the calculation and analysis methods in the seismic performance test module include one or more of the following: mode decomposition response spectrum method and dynamic time history analysis method.

[0046] Preferably, the seismic response index corresponding to the basic component strength test in the seismic performance test module is the mechanical property of the basic component; the seismic response index corresponding to the displacement test is the seismic displacement value of the selected position; and the seismic response index corresponding to the electrical performance test is the electrical performance parameter value.

[0047] Preferably, the seismic performance test module obtains a test result of whether the seismic performance of the suspension equipment is qualified according to the seismic response index of the suspension equipment under different seismic performance tests, including:

[0048] Comparing the seismic response index of the suspended equipment under different seismic performance tests with the index determination requirements corresponding to the seismic response index;

[0049] If the seismic response index of the suspended equipment under different seismic performance tests meets the corresponding index determination requirements, the seismic performance test result of the suspended equipment is qualified;

[0050] If the seismic response index of the suspension equipment under any seismic performance test fails to meet the corresponding index determination requirement, the seismic performance test result of the suspension equipment is unqualified.

[0051] Preferably, the seismic structure optimization module is specifically used for:

[0052] When the seismic performance test result of the suspension equipment is unqualified, it is obtained that the seismic response index of the suspension equipment during the seismic performance test does not meet the seismic response index under the corresponding index judgment requirement;

[0053] Based on the fact that the seismic response index does not satisfy the seismic response index under the corresponding index determination requirement, the seismic resistant structure of the suspended equipment is optimized.

[0054] Compared with the closest prior art, the patent application of this invention has the following beneficial effects:

[0055] The patent application of the present invention provides a seismic design method and system suitable for suspended equipment, including: obtaining a site adjustment coefficient corresponding to the suspended equipment according to the site category of the suspended equipment and the design basic seismic acceleration under the site category; constructing a seismic influence coefficient curve of the suspended equipment based on the site adjustment coefficient; performing a seismic performance test on the suspended equipment based on the seismic motion time history corresponding to the seismic influence coefficient curve to obtain a test result of whether the seismic performance of the suspended equipment is qualified; when the seismic performance test result of the suspended equipment is unqualified, performing seismic structural optimization on the suspended equipment; the patent application of the present invention constructs a seismic influence coefficient curve according to the site adjustment coefficient of the suspended equipment, and simulates the seismic scene based on the constructed seismic influence coefficient curve to perform a seismic performance test, and then performs seismic structural optimization on the suspended equipment with unqualified seismic performance test results, which is beneficial to provide solutions to the difficulties in seismic design of suspended equipment, so that the designed seismic method is more suitable for suspended equipment, thereby improving the seismic performance of the suspended equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic diagram of the structural cycle of the suspended equipment;

[0057] Figure 2 A schematic flow chart of a seismic design method applicable to suspended equipment provided for the patent application of the present invention;

[0058] Figure 3 A schematic diagram of a seismic influence coefficient curve constructed in a seismic design method applicable to suspended equipment provided in the patent application of the present invention;

[0059] Figure 4 A schematic diagram of the structural composition of a seismic design system suitable for suspended equipment provided in the patent application of the present invention. DETAILED DESCRIPTION

[0060] The specific implementation methods of the patent application of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0061] Embodiment 1:

[0062] The present invention patent application provides a seismic design method suitable for suspended equipment, the flow chart is as follows Figure 2 As shown, including:

[0063] Step 1: According to the site category of the suspended equipment and the design basic seismic acceleration under the site category, obtain the site adjustment coefficient corresponding to the suspended equipment;

[0064] Step 2: constructing a seismic influence coefficient curve of the suspended equipment based on the site adjustment coefficient;

[0065] Step 3: Based on the seismic time history corresponding to the seismic influence coefficient curve, a seismic performance test is performed on the suspended equipment to obtain a test result of whether the seismic performance of the suspended equipment is qualified;

[0066] Step 4: When the seismic performance test result of the suspended equipment is unqualified, the seismic structure of the suspended equipment is optimized.

[0067] Specifically, step 2 includes:

[0068] Based on the site adjustment coefficient, obtaining the seismic influence coefficient of the suspended equipment under different natural vibration periods;

[0069] According to the seismic influence coefficient of the suspended equipment under different natural vibration periods, a seismic influence coefficient curve of the suspended equipment is constructed.

[0070] The expression corresponding to the seismic influence coefficient curve of the suspended equipment is as follows:

[0071]

[0072] Among them, α s represents the seismic influence coefficient; η1 represents the downward slope adjustment coefficient; η2 represents the damping adjustment coefficient; η3 represents the site adjustment coefficient of the maximum value of the seismic influence coefficient; γ represents the attenuation exponent; T g represents characteristic period; T represents natural oscillation period; α max represents the maximum value of the seismic influence coefficient; p represents the first associated value, preferably, p=0.2; q represents the second associated value, preferably, q=5; r represents the third associated value, preferably, r=0.015; u represents the fourth associated value, preferably, u=0.4; t represents the fifth associated value, preferably, t=0.07; w represents the sixth associated value, preferably, w=0.03; A represents the first natural vibration period value, preferably, A=0.03; B represents the second natural vibration period value, preferably, B=0.1; C represents the third natural vibration period value, preferably, C=T g ; D represents the fourth self-oscillation period value, preferably, D = 5T g ; E represents the fifth natural oscillation period value; preferably, E=6s.

[0073] Step 3 includes:

[0074] Using the seismic motion time history corresponding to the seismic influence coefficient curve as seismic motion input to simulate an earthquake scenario, and using a computational analysis method or a shaking table test method to perform a seismic performance test on the suspended equipment under the earthquake scenario to obtain seismic response indicators of the suspended equipment under different seismic performance tests;

[0075] According to the seismic response index of the suspension equipment under different seismic performance tests, a test result of whether the seismic performance of the suspension equipment is qualified is obtained.

[0076] The calculation and analysis methods include one or more of the following: mode decomposition response spectrum method and dynamic time history analysis method.

[0077] The seismic performance test includes one or more of the following: foundation component strength test, displacement test and electrical performance test.

[0078] The seismic response index corresponding to the foundation component strength test is the mechanical property of the foundation component; the seismic response index corresponding to the displacement test is the seismic displacement value of the selected position; and the seismic response index corresponding to the electrical performance test is the electrical performance parameter value.

[0079] The method of obtaining a test result of whether the seismic performance of the suspension equipment is qualified according to the seismic response index of the suspension equipment under different seismic performance tests includes:

[0080] Comparing the seismic response index of the suspended equipment under different seismic performance tests with the index determination requirements corresponding to the seismic response index;

[0081] If the seismic response index of the suspended equipment under different seismic performance tests meets the corresponding index determination requirements, the seismic performance test result of the suspended equipment is qualified;

[0082] If the seismic response index of the suspension equipment under any seismic performance test fails to meet the corresponding index determination requirement, the seismic performance test result of the suspension equipment is unqualified.

[0083] Step 4 includes:

[0084] When the seismic performance test result of the suspension equipment is unqualified, it is obtained that the seismic response index of the suspension equipment during the seismic performance test does not meet the seismic response index under the corresponding index judgment requirement;

[0085] Based on the fact that the seismic response index does not satisfy the seismic response index under the corresponding index determination requirement, the seismic resistant structure of the suspended equipment is optimized.

[0086] The patent application of the present invention provides a seismic design method suitable for suspended equipment. By constructing a seismic influence coefficient curve with a structural natural vibration period greater than 6s, the constructed seismic influence coefficient curve is not only applicable to suspended equipment in converter stations and substations, but can also be expanded to other power facilities and even other structures with other structural natural vibration periods exceeding 6s; in addition, the patent application of the present invention also tests the seismic performance of the suspended equipment based on the constructed seismic influence coefficient curve, and then optimizes the seismic structure of the suspended equipment, which is conducive to making the designed seismic method more suitable for suspended equipment.

[0087] Embodiment 2:

[0088] A specific embodiment is used to illustrate a seismic design method for suspended equipment provided by the patent application of the present invention, taking a Class II site as an example. Figure 3 As shown in the figure, the calculation of shape parameters of the seismic influence coefficient curve under earthquake action shall comply with the following provisions:

[0089] 1) Horizontal segment 1, the segment with a period less than 0.03s;

[0090] 2) Straight rising section, from 0.03s to 0.1s;

[0091] 3) Horizontal section 2, from 0.1s to characteristic period T g Section;

[0092] 4) The descending section of the curve, from the characteristic period T g Up to 5T g Section;

[0093] 5) Linear descent section 1, cycle from 5T g To 6s section;

[0094] 6) Linear descent section 2, with a period ranging from 6s to 20s.

[0095] The expression of earthquake influence coefficient curve is as follows:

[0096]

[0097] In the formula,

[0098]

[0099]

[0100]

[0101] Among them, α represents the earthquake influence coefficient. When the value of α is less than 0.05η2α max When 0.05η2α is taken max ; αmax It indicates the maximum value of the seismic influence coefficient. The specific value is shown in Table 1. The general equipment adopts the maximum value of the seismic influence coefficient corresponding to the design basic seismic acceleration. The important equipment adopts the maximum value of the seismic influence coefficient corresponding to the design seismic acceleration of the important equipment in Table 1. The equipment in 220kV hub substation, 330kV and above substation and converter station is considered as important equipment, and the rest are general equipment. T indicates the natural vibration period of the structure, in seconds. T g It represents the characteristic period in seconds. For important equipment, the value is taken according to Table 2 based on the design earthquake grouping and site category of the equipment location. The value of general equipment is 0.05s shorter than that of important equipment. When the site category is unclear, it is taken as 0.9s. η2 represents the damping adjustment coefficient. When the value of η2 is less than 0.55, it is taken as 0.55. η1 represents the downward slope adjustment coefficient of the straight descending section. When the value of η1 is less than 0, it is taken as 0. γ represents the attenuation coefficient. ξ represents the structural damping ratio.

[0102] Table 1 Maximum value of horizontal earthquake influence coefficient α max

[0103]

[0104] Table 2 Characteristic period values ​​T used by important equipment g

[0105]

[0106] For other types of sites, the shape parameters of the seismic influence coefficient curve for calculating seismic action are determined by the following formula:

[0107] α s =η3α

[0108] Among them, α s Indicates the seismic influence coefficient of different types of sites; η3 indicates the site adjustment coefficient of the maximum value of the seismic influence coefficient, and the specific values ​​are shown in Table 3; α indicates the seismic influence coefficient of the Class II site;

[0109] Table 3 Site adjustment coefficients for maximum earthquake influence coefficients

[0110]

[0111] The patent application of the present invention can use a computational analysis method or a vibration table test method to obtain the seismic response of the suspended equipment, and then test the seismic performance of the suspended equipment. When the computational analysis method or the vibration table test method is used, a finite element mechanical model of the suspended equipment can be established first. The computational analysis method includes: a vibration mode decomposition response spectrum method and a dynamic time history analysis method, preferably a dynamic time history analysis method. The seismic action used by the vibration mode decomposition response spectrum method is the constructed seismic influence coefficient curve, and the seismic action input by the dynamic time history analysis method is the seismic time history corresponding to the constructed seismic influence coefficient curve. When the dynamic time history analysis method is used, the actual strong earthquake record or the artificially synthesized seismic time history can be used as the seismic input time history. The input seismic time history should not be less than 3 groups, of which at least one group is an artificially synthesized seismic time history, and its effective duration should be 5 to 10 times the basic natural vibration period of the equipment. The calculation result should be the envelope value of the calculation result of the dynamic time history analysis method and the calculation result of the vibration mode decomposition response spectrum method. If both methods are selected for calculation, the larger value between the two is taken.

[0112] If the shaking table test method is used, the seismic influence coefficient curve with a period range of 0 to 10s is converted into a seismic time history as the shaking table input to test indicators such as the insulator stress and main structure displacement of the suspended equipment under the action of an earthquake. Considering that some suspended equipment (such as suspended converter valves) are expensive and their volume and weight may exceed the testing capacity of the shaking table, a scaled model test can be used, and the scaled model test should follow similar principles. When the shaking table test method is used to test the seismic performance of suspended equipment, considering the performance of the current shaking table system, the maximum period of the seismic influence coefficient curve can be set to less than 20s, but should not be less than the basic natural vibration period of the suspended equipment. Taking into account the current mainstream equipment structure and shaking table test capabilities, the maximum period of the seismic influence coefficient curve is preferably set to 10s.

[0113] When a three-way earthquake input time history analysis is required, the ratio of the earthquake input acceleration in the two horizontal directions and the vertical direction for the suspended equipment in the UHV converter station is 1:1:0.8, and the ratio for the suspended equipment in non-UHV stations is 1:0.85:0.65.

[0114] The load effect combination used for seismic performance testing should include the effect combination of equipment deadweight, earthquake action, 0.25 times the design wind load, terminal force and internal pressure of the equipment. The specific expression is as follows:

[0115] S=S G +S E +0.25S W +S T +S P

[0116] Among them, S represents the effect combination value; S G It represents the effect value calculated from the standard value of the deadweight of the suspended equipment. The standard value of the deadweight of the equipment includes: the equipment body, auxiliary components, connecting conductors and hardware; S E It represents the effect value calculated from the standard value of earthquake action; S W It indicates the effect value calculated by the standard value of wind load. The UHV equipment is based on the wind speed of once in 100 years in the local area where the equipment is used, and the other voltage equipment is based on the wind speed of once in 50 years in the local area where the equipment is used; S T It represents the effect value calculated from the standard value of terminal force; S P It represents the effect value calculated from the standard value of internal pressure of suspended equipment.

[0117] When testing the seismic performance of suspended equipment, the patent application of this invention mainly tests the mechanical properties of weak components of the suspended equipment, the displacement of key positions and the electrical properties;

[0118] The weak components include but are not limited to the suspension insulators of the equipment, and the key positions include but are not limited to the maximum displacement of the equipment and the inlet and outlet of the equipment. The maximum displacement of the suspended equipment usually focuses on the bottom of the equipment. The specific seismic performance test of the suspended equipment includes:

[0119] (1) Mechanical properties of weak components

[0120] If the mechanical properties of the weak components of the suspended equipment meet the determination requirements in Table 4, it can be considered that the equipment strength meets the seismic requirements; otherwise, it is determined that the equipment strength does not meet the seismic requirements.

[0121] Table 4 Site adjustment coefficients for maximum earthquake influence coefficients

[0122]

[0123] In the table, k represents the safety factor; σ tot Represents the total stress generated by the combination of earthquake action and other loads; σ V It indicates the destructive stress value of the equipment or material for porcelain bushings and porcelain insulators, and the corresponding stress value under the rated mechanical load for composite bushings and composite insulators; M tot It represents the total bending moment caused by the combination of earthquake action and other loads; M v It indicates the breaking bending moment of the equipment or material for porcelain insulators or bushings, and the corresponding bending moment under the rated mechanical load for composite insulators or bushings.

[0124] (2) Displacement of key positions

[0125] The patent application of this invention conducts equipment seismic displacement evaluation according to the requirements of the connection design and installation layout of the suspended equipment in the specific project. The seismic displacement value of the equipment should be less than the displacement limit of the interference between the suspended equipment and other electrical facilities under the action of the earthquake. At the same time, it should also ensure that the displacement of its connection hardware meets the allowable displacement requirements to avoid the generation of large interaction forces between the suspended equipment and its interconnected equipment due to excessive displacement. For example, the seismic displacement of the suspended converter valve must ensure that it does not interfere with the adjacent electrical equipment. At the same time, the displacement of the inlet and outlet lines in the middle of the valve tower must also ensure that the movable displacement of the connection hardware of the converter valve and other equipment is below the limit or meets the corresponding design requirements, avoiding excessive interaction forces between the suspended converter valve and its interconnected converter transformer valve side bushings, wall bushings, and support insulators.

[0126] (3) Electrical performance

[0127] If the suspended equipment passes the vibration table test and meets the mechanical performance and displacement requirements, it is also necessary to test the electrical functions of the suspended equipment, such as sealing, insulation, circuit electrical continuity, etc. The functional assessment of different types of electrical equipment is different. You can choose the assessment or test items according to their own functional characteristics, and all must meet the functional requirements.

[0128] If any one of the above seismic performance tests does not meet the requirements, it is considered that the seismic performance of the suspension equipment does not meet the requirements; otherwise, it is considered that the seismic performance of the suspension equipment meets the requirements.

[0129] For suspended equipment that does not meet the seismic requirements, the equipment structure can be optimized to focus on the weak links in seismic resistance, or seismic isolation devices can be added and the seismic performance test can be re-conducted.

[0130] Embodiment 3:

[0131] Based on the same inventive concept, the present patent application also provides a seismic design system suitable for suspended equipment, the structural composition diagram is as follows: Figure 4 As shown, including:

[0132] A site adjustment coefficient acquisition module is used to obtain the site adjustment coefficient corresponding to the suspended equipment according to the site category of the suspended equipment and the design basic seismic acceleration under the site category;

[0133] A coefficient curve building module: used to build a seismic influence coefficient curve of the suspended equipment based on the site adjustment coefficient;

[0134] Seismic performance test module: used to perform seismic performance test on the suspended equipment based on the seismic time history corresponding to the seismic influence coefficient curve, and obtain a test result of whether the seismic performance of the suspended equipment is qualified;

[0135] Seismic structure optimization module: used to optimize the seismic structure of the suspended equipment when the seismic performance test result of the suspended equipment is unqualified.

[0136] The coefficient curve construction module is specifically used for:

[0137] Based on the site adjustment coefficient, obtaining the seismic influence coefficient of the suspended equipment under different natural vibration periods;

[0138] According to the seismic influence coefficient of the suspended equipment under different natural vibration periods, a seismic influence coefficient curve of the suspended equipment is constructed.

[0139] The expression corresponding to the seismic influence coefficient curve of the suspended equipment in the coefficient curve construction module is as follows:

[0140]

[0141] Among them, α s represents the seismic influence coefficient; η1 represents the downward slope adjustment coefficient; η2 represents the damping adjustment coefficient; η3 represents the site adjustment coefficient of the maximum value of the seismic influence coefficient; γ represents the attenuation exponent; T g represents characteristic period; T represents natural oscillation period; α max represents the maximum value of the earthquake influence coefficient; p represents the first associated value; q represents the second associated value; r represents the third associated value; u represents the fourth associated value; t represents the fifth associated value; w represents the sixth associated value; p γ represents the attenuation result of γ attenuation on the first correlation value p; A represents the first natural oscillation period value; B represents the second natural oscillation period value; C represents the third natural oscillation period value; D represents the fourth natural oscillation period value; E represents the fifth natural oscillation period value.

[0142] The fifth natural oscillation period value E in the coefficient curve construction module is 6s.

[0143] The seismic performance test in the seismic performance test module includes one or more of the following: basic component strength test, displacement test and electrical performance test.

[0144] The seismic performance test module is specifically used for:

[0145] Using the seismic motion time history corresponding to the seismic influence coefficient curve as seismic motion input to simulate an earthquake scenario, and using a computational analysis method or a shaking table test method to perform a seismic performance test on the suspended equipment under the earthquake scenario to obtain seismic response indicators of the suspended equipment under different seismic performance tests;

[0146] According to the seismic response index of the suspension equipment under different seismic performance tests, a test result of whether the seismic performance of the suspension equipment is qualified is obtained.

[0147] The calculation and analysis methods in the seismic performance test module include one or more of the following: mode decomposition response spectrum method and dynamic time history analysis method.

[0148] The seismic response index corresponding to the basic component strength test in the seismic performance test module is the mechanical property of the basic component; the seismic response index corresponding to the displacement test is the seismic displacement value of the selected position; and the seismic response index corresponding to the electrical performance test is the electrical performance parameter value.

[0149] The seismic performance test module obtains a test result of whether the seismic performance of the suspension equipment is qualified according to the seismic response index of the suspension equipment under different seismic performance tests, including:

[0150] Comparing the seismic response index of the suspended equipment under different seismic performance tests with the index determination requirements corresponding to the seismic response index;

[0151] If the seismic response index of the suspended equipment under different seismic performance tests meets the corresponding index determination requirements, the seismic performance test result of the suspended equipment is qualified;

[0152] If the seismic response index of the suspension equipment under any seismic performance test fails to meet the corresponding index determination requirement, the seismic performance test result of the suspension equipment is unqualified.

[0153] The seismic structure optimization module is specifically used for:

[0154] When the seismic performance test result of the suspension equipment is unqualified, it is obtained that the seismic response index of the suspension equipment during the seismic performance test does not meet the seismic response index under the corresponding index judgment requirement;

[0155] Based on the fact that the seismic response index does not satisfy the seismic response index under the corresponding index determination requirement, the seismic resistant structure of the suspended equipment is optimized.

[0156] It should be understood by those skilled in the art that the embodiments of the present invention patent application can be provided as methods, systems, or computer program products. Therefore, the present invention patent application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention patent application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0157] The present invention patent application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present invention patent application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0158] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0159] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the patent application of the present invention rather than to limit its protection scope. Although the patent application of the present invention is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the patent application of the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the application, but these changes, modifications or equivalent substitutions are all within the protection scope of the claims to be approved.

Claims

1. A seismic design method for suspended equipment, characterized in that: include: According to the site category of the suspended equipment and the design basic seismic acceleration under the site category, obtaining the site adjustment coefficient corresponding to the suspended equipment; Based on the site adjustment coefficient, constructing a seismic influence coefficient curve of the suspended equipment; Based on the seismic motion time history corresponding to the seismic influence coefficient curve, the seismic performance test of the suspended equipment is performed to obtain a test result of whether the seismic performance of the suspended equipment is qualified; When the seismic performance test result of the suspension equipment is unqualified, the seismic structure of the suspension equipment is optimized.

2. The method according to claim 1, characterized in that The step of constructing a seismic influence coefficient curve of the suspended equipment based on the site adjustment coefficient includes: Based on the site adjustment coefficient, obtaining the seismic influence coefficient of the suspended equipment under different natural vibration periods; According to the seismic influence coefficient of the suspended equipment under different natural vibration periods, a seismic influence coefficient curve of the suspended equipment is constructed.

3. The method according to claim 1, characterized in that The expression corresponding to the seismic influence coefficient curve of the suspended equipment is as follows: Among them, α s represents the seismic influence coefficient; η1 represents the downward slope adjustment coefficient; η2 represents the damping adjustment coefficient; η3 represents the site adjustment coefficient of the maximum value of the seismic influence coefficient; γ represents the attenuation index; T g represents characteristic period; T represents natural oscillation period; α max represents the maximum value of the earthquake influence coefficient; p represents the first associated value; q represents the second associated value; r represents the third associated value; u represents the fourth associated value; t represents the fifth associated value; w represents the sixth associated value; p γ represents the attenuation result of γ attenuation on the first correlation value p; A represents the first natural oscillation period value; B represents the second natural oscillation period value; C represents the third natural oscillation period value; D represents the fourth natural oscillation period value; E represents the fifth natural oscillation period value.

4. The method according to claim 3, characterized in that The fifth natural oscillation period value E=6s.

5. The method according to claim 1, characterized in that The seismic performance test includes one or more of the following: foundation component strength test, displacement test and electrical performance test.

6. The method according to claim 5, characterized in that The seismic performance test of the suspended equipment is performed based on the seismic time history corresponding to the seismic influence coefficient curve to obtain a test result of whether the seismic performance of the suspended equipment is qualified, including: Using the seismic motion time history corresponding to the seismic influence coefficient curve as seismic motion input to simulate an earthquake scenario, and using a computational analysis method or a shaking table test method to perform a seismic performance test on the suspended equipment under the earthquake scenario to obtain seismic response indicators of the suspended equipment under different seismic performance tests; According to the seismic response index of the suspension equipment under different seismic performance tests, a test result of whether the seismic performance of the suspension equipment is qualified is obtained.

7. The method according to claim 6, characterized in that The calculation and analysis methods include one or more of the following: mode decomposition response spectrum method and dynamic time history analysis method.

8. The method according to claim 6, characterized in that The seismic response index corresponding to the foundation component strength test is the mechanical property of the foundation component; the seismic response index corresponding to the displacement test is the seismic displacement value of the selected position; and the seismic response index corresponding to the electrical performance test is the electrical performance parameter value.

9. The method according to claim 8, characterized in that The method of obtaining a test result of whether the seismic performance of the suspension equipment is qualified according to the seismic response index of the suspension equipment under different seismic performance tests includes: Comparing the seismic response index of the suspended equipment under different seismic performance tests with the index determination requirements corresponding to the seismic response index; If the seismic response index of the suspended equipment under different seismic performance tests meets the corresponding index determination requirements, the seismic performance test result of the suspended equipment is qualified; If the seismic response index of the suspension equipment under any seismic performance test fails to meet the corresponding index determination requirement, the seismic performance test result of the suspension equipment is unqualified.

10. The method according to claim 9, characterized in that When the seismic performance test result of the suspended equipment is unqualified, optimizing the seismic structure of the suspended equipment comprises: When the seismic performance test result of the suspension equipment is unqualified, it is obtained that the seismic response index of the suspension equipment during the seismic performance test does not meet the seismic response index under the corresponding index judgment requirement; Based on the fact that the seismic response index does not satisfy the seismic response index under the corresponding index determination requirement, the seismic resistant structure of the suspended equipment is optimized.

11. A seismic design system for suspended equipment, characterized in that: include: A site adjustment coefficient acquisition module is used to obtain the site adjustment coefficient corresponding to the suspended equipment according to the site category of the suspended equipment and the design basic seismic acceleration under the site category; A coefficient curve building module: used to build a seismic influence coefficient curve of the suspended equipment based on the site adjustment coefficient; Seismic performance test module: used to perform seismic performance test on the suspended equipment based on the seismic time history corresponding to the seismic influence coefficient curve, and obtain a test result of whether the seismic performance of the suspended equipment is qualified; Seismic structure optimization module: used to optimize the seismic structure of the suspended equipment when the seismic performance test result of the suspended equipment is unqualified.

12. The system according to claim 11, characterized in that The expression corresponding to the seismic influence coefficient curve of the suspended equipment in the coefficient curve construction module is as follows: Among them, α s represents the seismic influence coefficient; η1 represents the downward slope adjustment coefficient; η2 represents the damping adjustment coefficient; η3 represents the site adjustment coefficient of the maximum value of the seismic influence coefficient; γ represents the attenuation index; T g represents characteristic period; T represents natural oscillation period; α max represents the maximum value of the earthquake influence coefficient; p represents the first associated value; q represents the second associated value; r represents the third associated value; u represents the fourth associated value; t represents the fifth associated value; w represents the sixth associated value; p γ represents the attenuation result of γ attenuation on the first correlation value p; A represents the first natural oscillation period value; B represents the second natural oscillation period value; C represents the third natural oscillation period value; D represents the fourth natural oscillation period value; E represents the fifth natural oscillation period value.

13. The system of claim 12, wherein: The fifth natural oscillation period value E in the coefficient curve construction module is 6s.

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