41results about How to "Meet the needs of safe operation" patented technology

The invention relates to an automatic train protection system and method based on image identification and multi-perception fusion. The automatic train protection system comprises an image collection unit (1), an image processing unit (2), a multi-perception fusion processing unit (3), an auxiliary perception unit (4) and an early warning result output unit (5), wherein the image collection unit (1), the image processing unit (2), the multi-perception fusion processing unit (3) and the early warning result output unit (5) are connected in sequence; the auxiliary perception unit (4) is connected with the multi-perception fusion processing unit (3). Compared with the prior art, the automatic train protection system and method based on image identification and multi-perception fusion can be adapted to complex conditions appearing in urban mass transit operation lines, the safe protection of a train is automatically realized according to the practical condition of a line, and the operation safety of urban mass transit is greatly improved.

The invention, which belongs to the technical field of the electrical power engineering, particularly relates to a construction method of a resistance reduction and grounding device of a transformer station. The method comprises: a surveyor measures a soil resistivity, a frozen soil depth, and a soil layering situation in a site area of a transformer station to obtain surveying data; a soil model is established according to the surveying data; on the basis of the soil model, a grounding device inside the station is designed in the site area of the transformer station; safety verification is carried out on the grounding device designed at the last step so as to obtain a verification result; if the verification result meets the requirement, a next step is executed; if the verification result does not meet the requirement, a grounding device is arranged externally outside the site area of the transformer station and safety verification is carried out; the verification result is stored; a construction drawing is drawn; and construction is carried out by organizing people. Under the circumstances that no extra collected land is increased, the construction method of the resistance reduction and grounding device of the transformer station is provided. The construction method has characteristics of obvious resistance reduction effect, simple structure, convenient construction, and low cost and the like.

The invention discloses a day-ahead power generation plan optimization method based on thermal power fusion and electric energy storage combined peak shaving. The day-ahead power generation plan optimization method comprises the following steps: S1, acquiring relevant parameter information of deep peak regulation and electric energy storage bidirectional peak regulation of a thermal power generating unit, and generating a day-ahead power generation plan calculation scene of thermal power fusion and electric energy storage combined peak regulation in combination with various parameter information required by a day-ahead power generation plan; S2, generating a day-ahead power generation plan optimization model of thermal power fusion electric energy storage combined peak regulation accordingto the parameter information in S1; and S3, carrying out optimization calculation and safety check on the day-ahead power generation plan optimization model of thermal power fusion electric energy storage combined peak regulation generated in the S2 to obtain a day-ahead power generation plan, and clearing the price of a peak regulation auxiliary service market. The day-ahead power generation plan optimization method can improve the day-ahead plan execution rate, promote the new energy consumption and meet the increasingly lean large power grid safety operation demands under the condition offully evaluating the next-day new energy consumption capability and the system load peak regulation demands in combination with the next-day power grid operation mode.

The invention provides a substation grounding network inclined shaft resistance reduction technology. The technology is achieved through the following steps that a, reconnaissance is conducted, and the number of inclined shafts, the extending direction and the laying length are determined according to the surrounding geological conditions; b, the drill bit drilling angle and the buried depth are determined; c, inclined shaft drilling is conducted, and the drilling is controlled in the shaft drilling direction and commanded through a computer according to the lateral force deviation rectifying principle so as to conduct rectification at any time; d, a drill bit is drilled back to the ground at the preset position, and a thermal galvanized circular steel pipe is fixed to the drill bit pulled out of the ground; e, the thermal galvanized circular steel pipe is pulled back to one inclined shaft through a reamer and a transfer case; meanwhile, physical type resistance reducing agents are pumped into the steel pipe through a diesel engine water pump in a high pressure mode so as to reduce the resistance of the drill bit; f, pulling is conducted while pouring is conducted, a drill rod is detached at the constant speed, and the resistance reducing agents are evenly poured into the inclined shaft. By means of the substation grounding network inclined shaft resistance reduction technology, the problem that the ground resistance can still not meet the technological requirements after a substation is laid with a composite ground network, the ground resistance is made to meet the design requirements, and safe operation requirements of a power grid are met.

The invention relates to an automatic checking method for generator set grid-related protection and limitation. The method is suitable for large-scale power system stable simulation, and based on grid topology, the basic trend, dynamic component parameters and the grid-related protection constant value, a grid-related protection and limitation model is automatically generated, according to different running modes, a failure set is automatically formed, cooperative relationship static checking and time-domain simulation dynamic checking of generator set grid-related protection and limitation can be automatically achieved, and a corresponding checking result is given. According to the method, the problem that in an existing power system stable simulation program, the generator set grid-related protection and limitation automatic checking function is lacked is solved, and it is ensured that set grid-related protection can adapt to changes of the power grid running mode, and the method can be in best fit with an automatic device. On the basis of ensuring set safety, the dynamic adjusting capability can be fully developed, and the powerful support can be provided for safe and stable running of the power grid.

The invention provides an overflow face protection method in which shock-and-abrasion resistant protection processing is performed on a concrete surface of an overflow face of an overflow dam. The overflow face protection method includes step 1, firstly grinding and repairing the concrete surface, above water surface, of the overflow face; step 2, smearing a polyuria coating on the concrete surface, above the water surface, of the overflow face; step 3, when a power unit halts and water level of the overflow face of the overflow dam falls back, grinding and repairing the concrete surface, exposed after the water level falls back, of the overflow face; step 4, smearing a high-tenacity epoxy coating on the concrete surface, exposed after the water level falls back, of the overflow face. By the overflow face protection method, the problems of denudation and cracking existing on the concrete surface of the overflow face of the overflow dam can be solved, structural safety of the overflow face can be guaranteed, and the overflow face can meet requirements on safe operation of the overflow dam.

An integrated temperature measuring device for main transformer accessories, belonging to the field of transmission facility temperature measuring devices, comprises a pedestal, a transverse slide carriage moving left and right, a vertical slide carriage moving front and back, an outer rail, an inner rail, and a slide carriage. The rear end of the top surface f the vertical slide carriage is provided with a column. The column is provided with a third motor, and the third motor fits a leading screw slide block mechanism through the outer rail. The outer rail is equipped with an arc inner wall having inner teeth. The inner rail is equipped with outer teeth. The outer rail is fixedly connected to the inner rail. A driving motor for installation of a planetary gear is disposed below the slide carriage. The planetary gear engages with the outer rail and the inner rail. An installation stand equipped with an infrared imaging instrument is arranged on the top surface of the slide carriage. Motors and the infrared imaging instrument are connected to a central control chamber via a microprocessor. Through a computer control technology, temperature measurement points are measured at a fixed position and time by controlling the motors to adjust the left, right, front, back, up and down positions of the infrared imaging instrument, and operators do not need to arrive at a site and hold the infrared imaging instrument to record temperature measurements. Therefore, the temperature measuring efficiency is increased, and the labor intensity of operators is effectively reduced.

The invention relates to an anti-slip strengthening device construction method. The method comprises the following steps that geotechnical engineering reconnaissance is performed on an easily-sliding mountain to obtain rock stratum thickness information, mountain gradient information and earth surface elevation information to determine control point coordinate information of anti-slip piles when the anti-slip piles are arranged; drilling operation is performed at the corresponding position according to the control point coordinate information; the anti-slip piles are arranged in the drilled holes correspondingly, cement slurry is injected into the drilled holes, and the grouting pressure range in the grouting process is 0.6-0.8 Mpa; the adjacent anti-slip piles are connected through steel wire ropes to form a plurality of unit storage portions in an enclosing manner, and the unit storage portions are internally and fixedly provided with flexible grid meshes. The anti-slip strengthening device construction method is simple, construction efficiency is high, corrosion resistance is good, the construction cost is low, and the anti-slip strengthening device construction method is particularly suitable for application occasions where ionic rare earth resources are exploited with an in-situ leaching process and can meet the requirement for safe production of ionic rare earth mines.

The invention belongs to the field of test verification methods of mechanical connection, and particularly relates to a matching performance verification method of a ferrule joint and an instrument pipe for a nuclear power station. The method comprises the following steps that S1, selecting M groups of test pieces, wherein each group of test pieces comprises a first test piece, a second test piece, a third test piece, a fourth test piece and a fifth test piece, and each test piece is composed of a clamping sleeve connector and an instrument pipe; S2, performing an airtight test on the M groupsof test pieces; S3, performing a hydrostatic test on the M groups of test pieces; s4, performing a vibration test, a water pressure test and a bursting test on the first test piece; performing a tightening test and a hydrostatic test on the second test piece; performing pulse test, repeated assembly test and water pressure test on the third test piece; performing a bending fatigue test, a repeated assembly test and a hydrostatic test on the fourth test piece; performing a tensile test on the fifth test piece; S5, performing a limit assembly test and a hydrostatic test on the third test pieceand the fourth test piece; and if each test of the M groups of test pieces passes, the matching performance of the ferrule joint and the instrument pipe meets the application standard requirement of the nuclear power station.

The embodiment of the invention discloses an asset safety operation system, method and device. The specific embodiment of the asset security operation system comprises a data processing layer configured to collect information and logs of various on-cloud and under-cloud assets, and analyze the logs to obtain risk information; a security service layer which is configured to dispose the assets according to the risk information; a security display layer which is configured to output the asset information and the risk information; and a security hosting layer which is configured to receive a hosting request comprising at least one cloud account and uniformly hosting the at least one cloud account to a security account. According to the implementation mode, a security hosting system in a multi-cloud scene is constructed, and a multi-cloud scene security operation closed loop is realized through security visualization, security protection, threat detection and investigation response.

The invention relates to an operation method of a double back-pressure double-rotor interchange type driving feed pump steam turbine. The operation method is implemented by adopting an operation system of the double back-pressure double-rotor interchange type driving feed pump steam turbine. The double back-pressure double-rotor interchange type driving feed pump turbine operation system comprisesan original feed pump turbine operation system and a high back-pressure feed pump turbine operation system which work in cooperation with each other; the original feed pump turbine operation system comprises an original feed pump turbine, a first low-pressure cylinder, a first condenser, a first heater, a first deaerator and a first steam-driven feed pump; the high back-pressure feed pump turbineoperation system comprises a high-back-pressure water feeding pump turbine, a second low-pressure cylinder, a second condenser, a second heater, a second deaerator and a second steam-driven feed pump; when a unit runs at high back pressure, a high back-pressure feed pump turbine running system is started; and when the unit operates at normal back pressure, the original feed pump turbine operationsystem before transformation is recovered to run.

A multifunctional cone assembly comprises an outer cabin, a cabin head, a cabin cover and an illumination switch, wherein a feeler lever A and a feeler lever B are arranged in the outer cabin and connected with a cone rod and an electrical test pen respectively, a touch switch A and a touch switch B are arranged on the cabin cover, the touch switch A is connected with the feeler lever A, and the touch switch B is connected with the feeler lever B; a spring A is arranged between the feeler lever A and the touch switch A, a spring B is arranged between the feeler lever B and the touch switch B, and the spring A and the spring B are connected; a work hole A, a work hole B and a work hole C are formed in the cabin head. The invention aims to provide a design method of a production tool which is simple in design, has multiple effects, is shared and is convenient and safe to use.