67results about How to "Efficient governance" patented technology

The invention discloses a full-effect electric energy optimization rapid detection system and method, and particularly relates to the technical field of electric energy detection. The method comprises the following steps: acquiring voltage, current, frequency, harmonic component and three-phase unbalance degree of a power grid in real time, calculating a power grid impedance value and a load dynamic characteristic ratio, drawing an impedance frequency characteristic curve, analyzing a harmonic amplification abnormal degree and a load dynamic response characteristic, and evaluating the accuracy of a detection instruction generated by the full-effect electric energy optimization device. The error correction is carried out on the inaccuracy detection instruction, the duty ratio is dynamically adjusted by utilizing the PWM technology, the accurate matching of the amplitude and the phase of the output current is realized, the error correction effect is evaluated by comparing the real-time detection value with the theoretical calculation value, and the detection model and the compensation strategy are automatically optimized. The problems of detection precision reduction and error compensation caused by complex power grid conditions in the prior art are solved, harmonic amplification, reactive power over-compensation and three-phase balance damage are avoided, and efficient and accurate electric energy optimization and power grid stability improvement are achieved.

The invention discloses bacillus pumilus, a complex microbial inoculant and application of the complex microbial inoculant in a saline-alkali soil four-dimensional improvement method, and belongs to the technical field of microorganism application. According to the invention, a strain of bacillus pumilus is screened, and the bacillus pumilus has excellent saline-alkaline tolerance, has multiple functions of producing organic acid, proline, siderophore, trehalose, IAA and betaine and the like, and has obvious advantages in saline-alkali soil improvement; the stress resistance of plants is improved through multiple mechanisms, nutrient absorption is promoted, the soil structure and chemical environment are improved, the stability and diversity of soil microbial communities are enhanced, and then effective treatment on the saline-alkali soil is achieved. According to the four-dimensional improvement method for the saline-alkali soil, the microbial technology, the physical technology, the chemical technology and the nutrition technology are combined, the saline-alkali soil is improved from the four dimensions of physics, chemistry, biology and nutrition, soil can be effectively improved, and repeated planting is not likely to happen.

The invention relates to the technical field of coal seam fully-mechanized caving mining, and discloses an extra-thick coal seam fully-mechanized caving mining hard roof-gas cooperative control method which comprises the following specific steps: collecting coal mine site stratum composition data; a numerical simulation physical model of the coal mine working face is established based on FLAC3D software, and the horizon of the hydraulic fracturing hard roof is obtained through simulation; mining-induced stress field inversion is carried out, and the fracturing implementation time and the drilling position are determined; according to the super-thick coal seam fully-mechanized caving mining hard roof-gas cooperative control method, the layer position of the hydraulic fracturing hard roof, the fracturing implementation time and the drilling position are obtained through simulation analysis, the position of a drilling end hole point is determined according to the goaf gas migration rule, and the gas migration rule of a mining field is determined by combining the expansion and evolution rule of hydraulic cracks and the mining field gas migration rule. The strong mine pressure weakening mechanism and the gas seepage path and gas pressure distribution characteristics in the gas extraction process are mastered, and effective control over the hard roof and efficient gas treatment are achieved.

The invention relates to the technical field of data governance, in particular to a visual display method for data governance, which comprises the following steps: S1, data acquisition and cleaning: acquiring data; s2, data classification and storage: classifying according to a preset classification rule; s3, data dependency analysis: generating a data dependency graph; s4, defining and optimizing data governance rules: defining the data governance rules, and dynamically optimizing the data governance rules; s5, executing a data governance process: automatically executing the data governance process; s6, visual display: using a data visualization tool to carry out graphical display on key indexes, execution results and a data dependence graph in the data governance process; and S7, feedback and optimization: optimizing a data governance rule according to a visualized display result. According to the invention, it is ensured that the data governance rule can accurately reflect a complex data dependence structure, and the accuracy and applicability of a governance decision are improved.

The invention discloses a plant-microorganism enhanced multiphase extraction organic pollution remediation method. The method comprises the steps of site evaluation, phytoremediation system construction, microbial remediation system construction, multiphase extraction enhancement, remediation process monitoring and adjustment, pollutant removal and ecological restoration. According to the method, a plant-microorganism enhanced multiphase extraction synergistic effect remediation system is constructed, the problem that the efficiency of a single plant remediation or microorganism remediation technology is low is effectively solved, degradation and removal of organic pollutants are accelerated, efficient treatment of refractory pollutants such as polycyclic aromatic hydrocarbons, polychlorinated biphenyls and organophosphorus pesticides is achieved, and the method has the advantages of being simple in process, low in cost and good in application prospect. In the remediation process, the influence on the ecological environment is small, secondary pollution is not likely to be generated, and the method has both economical efficiency and environmental friendliness and is suitable for treatment of multiphase pollutants in complex contaminated sites including soil, water and solid waste.

The invention relates to a weight-based ETL task scheduling method and device, and belongs to the field of medical big data management. The method comprises three treatment stages, in the task preprocessing stage, the importance weight WEj of each ETL task is calculated, and an ETL task set E is divided into a high-level task set H and a low-level task set L through a task grading algorithm; in a task allocation stage, calculating performance weights WNi of different nodes, obtaining source data volumes of ETL tasks, and allocating tasks in a high-level task set H and a low-level task set L to task sets of different nodes through a weighted greedy algorithm to form a set G consisting of a plurality of node task sets; in the task execution stage, the task execution sequence of each node is dynamically adjusted through a hierarchical high response ratio priority algorithm. The task execution duration can be pre-estimated, and the cluster resource utilization rate is improved; and dynamically adjusting the execution sequence of the tasks by calculating the response ratio of the to-be-executed tasks.

The invention discloses a power distribution network station-line-transformer-household layered voltage regulation method and system, and the method aims at the voltage out-of-limit problem of a power distribution network, carries out the linkage treatment according to the sequence of station-line-transformer-household from top to bottom, solves the voltage out-of-limit problem of a piece through a transformer substation and a line, and solves the voltage out-of-limit problem of a distribution room and a user. According to the method, an in-station AVC control strategy is optimized at a substation level, voltage regulation is carried out through a medium-voltage line voltage regulator and a reactive power compensation device at a line level, the problem of voltage out-of-limit reasons of individual users is solved through gear shifting and reactive power compensation device switching according to the conditions of distribution transformer low-voltage side outlet voltage and user voltage at a distribution transformer level, and the voltage out-of-limit reasons of the individual users are subjected to on-site model arrangement. And measures of adding a household reactive power compensation device, transforming a user line and the like are adopted in a targeted manner. According to the invention, through multi-level voltage linkage, the problem that the high voltage problem of the current user is prominent but the single-level voltage regulation capability is insufficient is solved, and the safety, reliability and economical efficiency of power grid operation are improved.

The invention provides a device for simulating the vertical migration rule of oil and gas field ground pollutants and a simulation method, and relates to the technical field, the device comprises a soil column leaching module, a spraying module and an underground water control module, the soil column leaching module and the underground water control module are both arranged in an underground foundation pit, and the soil column leaching module comprises a soil column experiment device; a sensor device is inserted into the soil column experimental device, the sensor device is electrically connected with the data acquisition device, the soil column experimental device is provided with a soil sampling window, the spraying module comprises a spraying pipe, one end of the spraying pipe is communicated with the reservoir, and the other end of the spraying pipe extends above the soil column experimental device. On the basis that only surface water is concerned to drive pollutant migration originally, the underground water control module and the water supply Markov bottle are additionally arranged, and fluctuation of the underground water level can be achieved; long-term and continuous in-situ monitoring of soil moisture in-situ data can be achieved in real time, non-destructive collection of samples can be achieved, and the research quality of the vertical migration rule of oil and gas field ground pollutants is improved.

The invention discloses an agricultural non-point source pollution treatment system, and relates to the technical field of agricultural environmental protection and water treatment, and the agricultural non-point source pollution treatment system comprises an ecological ditch unit, an ecological pond unit, a connecting pipeline and a control unit; the ecological ditch unit is used for carrying out primary pretreatment on sewage through a plant enhanced corridor and an ecological filter dam to remove suspended solids and part of pollutants; the ecological reservoir pond unit realizes deep purification through a multi-stage process of flocculent precipitation, enhanced denitrification, ecological treatment and a stable area; the control unit intelligently regulates and controls water flow based on water quality monitoring data, water reaching the standard is directly reused in farmland or lakes, and water not reaching the standard enters a pond to be further treated. According to the invention, stepped deep removal of pollutants, cyclic utilization of water resources and self-adaptive operation of the system are realized, and the treatment efficiency and stability are improved.

The present invention is applicable to the technical field of farmland pollutant treatment, and provides a green management and supervision system based on big data analysis technology, including a benchmark data acquisition module for selecting a standard farmland area and performing a complete soil pollution test on it to obtain pollutant benchmark data; a pollutant retention coefficient calculation module for measuring the inflow and outflow of the standard farmland area and other non-standard farmland areas to be treated, and combining water quality testing to calculate the pollutant retention coefficient of the standard farmland area and the non-standard farmland area. The present invention obtains accurate pollutant benchmark data by selecting a standard farmland area for comprehensive soil pollution testing, and scientifically calculates the pollutant retention coefficient of the farmland by combining the inflow, outflow and water quality testing.

The present invention relates to a circulation system for cleaning and purifying floating dust on the inner wall of a steel pipe, which comprises a support frame, a working cleaning system, a purification system installed in a cylinder, an ash unloading system, a clean air chamber and a fan, a circulation pipeline, a steel pipe and a pipeline connecting device. The working cleaning system comprises a frame, a transmission device and a guide device installed on the frame, and the cyclone power working part throws the flocculent flexible wear-resistant material into a circular arc and flushes the inner wall of the steel pipe to clean the floating dust on the inner wall of the steel pipe. The purification system is equipped with a filter device and a vibrator. The ash unloading system is arranged below the ash hopper. The clean air chamber and the fan are arranged above the purification system. The present invention utilizes the purified gas to drive the cyclone working cleaning system through the wind energy flowing through the circulation pipeline to remove the floating dust on the inner wall of the steel pipe, so that the floating dust falls into the ash hopper after purification and is discharged by the ash unloading system, and the purified gas is transferred to the output pipeline for the wind energy driving working system to be circulated.

The invention relates to the technical field of concrete dams, in particular to a concrete dam deep crack comprehensive treatment method which comprises the following steps: firstly, drilling a crack stopping hole in the tail end of a crack to prevent the crack from extending; then slotting along the crack, burying an exhaust pipe, and sealing the crack; then, deep reinforcement and anti-seepage treatment are carried out step by step, specifically, grouting seam penetrating holes are drilled, superfine cement grout is poured, chemical grouting seam penetrating holes are drilled in the upstream face, and epoxidation chemical grout is poured; then, an SR anti-seepage cover plate is pasted on the upstream face crack area; and finally, integrally spraying a polyurea coating. By means of the multi-layer treatment process combining structure reinforcement and flexible seepage prevention from inside to outside, the reliability and durability of crack treatment are remarkably improved, the dam face can be kept uniform and attractive in appearance, and the method has the advantages of being reliable in technology, economical and reasonable.

The application discloses an improver for treating cadmium contaminated soil and a preparation method thereof, and belongs to the technical field of heavy metal contaminated soil treatment. The improver comprises the following raw materials: iron oxide, tri-potassium phosphate, biochar, corn sugar residue, xanthan gum, sodium citrate, vitamin E, arbutin, bilirubin and sodium bicarbonate. The improver is applied to cadmium contaminated soil, cadmium ions in the soil can be adsorbed and precipitated to form cadmium precipitates, the toxicity of the cadmium ions is reduced, earthworms ingest the cadmium precipitates into the body and fix them, so that the cadmium content in the soil is reduced. The improver can also promote the absorption, ingestion and digestion of cadmium ions by earthworms, maintain the normal physiological activities of the earthworms, reduce the toxic effect of cadmium on the earthworms, and make the earthworms better treat cadmium contaminated soil. The preparation method of the improver is simple, good in effect and friendly to the environment.

The invention discloses a gaseous mercury air-sea flux continuous automatic monitoring device and a method thereof, and relates to the field of air-sea flux measurement. Related data of the gaseous mercury air-sea flux are measured through operation of the monitoring device; the related data specifically comprise surface seawater temperature, sample water volume, gaseous mercury concentration in purge gas and gaseous mercury concentration in external environment atmosphere; the gas-state mercury air-sea flux is calculated by measuring related data and applying a film gas exchange model, and a result is obtained. According to the monitoring method, manual operation is not needed, the operation difficulty is greatly reduced, the operation requirement for personnel is low, and rapid and continuous calculation can be carried out in a short time.

A combined type erosion gully slope protection structure belongs to the technical field of water and soil conservation engineering, aims to solve the problem that an existing erosion gully slope protection structure cannot give full play to soil fixation and water retention effects of plant root systems, and comprises an ecological layer, a supporting layer, a protective layer and a water interception groove. The ecological layer is laid on the slope surface of the slope body in the gradient extending direction of the slope body, the supporting layer is laid on the ecological layer, the ecological layer and the supporting layer are fixed to the slope body through a plurality of anchor rods, the protective layer is laid on the supporting layer and fixed to the supporting layer through a plurality of supporting plates, and the water intercepting groove is fixedly embedded in the top of the slope body. And the water intercepting groove is arranged close to the protective layer. The slope protection structure is mainly used for the erosion gully.

The invention discloses a working face dust removal, spraying and fresh air system for a coal mine, and belongs to the technical field of coal mine underground environment governance and occupational health safety. The system comprises a track hoisting and moving device, a wet-type vortex dust removal fan, a spraying and dust falling device, a fresh air device and an automatic control system. The structural frame is hung on the moving trolley through the hanging chain and is driven by the driving main machine to move dynamically along the track. The dust removal fan adopts the combination of a radial mixing type impeller and a dewatering vortex wheel, so that powerful dust collection and dry and comfortable exhaust are realized; the spraying device realizes intelligent avoiding and spraying stopping through a personnel proximity sensor; the fresh air device is of a double-channel structure, and positive-pressure clean fresh air is provided for the breathing area through four-stage deep purification. The problems that traditional equipment is installed and fixed, functions are split, people are prone to getting wet, and breathing guarantee is lacked are solved, integrated cooperation of full-working-face dynamic cruise control, precise dust suppression and medical-grade fresh air supply is achieved, and the safety and comfort of underground operation are remarkably improved.

The present invention discloses a water quality monitoring and treatment method for non-flowing waters, comprising: installing a plurality of beam-type mounting seats on the waters to be treated, forming a slow-release area between two adjacent beam-type mounting seats; laying a plurality of storage-type vegetation layers on the bottom of the water; installing a supply pipe system on the beam-type mounting seats; installing an opening and closing partition wall on the beam-type mounting seats, the opening and closing partition wall being connected to the storage-type vegetation layer via the supply pipe system; supplying carbon dioxide to the storage-type vegetation layer through the supply pipe system at a predetermined flow rate; regularly providing nutrient solution to underwater vegetation through the supply pipe system; after the nitrification system is established and maintained stable, transplanting part of the storage-type vegetation layer to the slow-release area as required. The present invention forms a complete ecological purification system in non-flowing waters, which can effectively treat water pollution and has long-term sustainability, while improving the ornamental value of non-flowing waters. The present invention is suitable for water treatment in non-flowing waters.

The present invention belongs to the field of coal mine safety, and relates to the prevention and control of hydrogen sulfide disasters in mines, and in particular to a method for coordinated upper and lower control of hydrogen sulfide wells in abandoned oil wells in coal mine areas. The method firstly performs advance control by injecting alkaline absorption liquid in the ground area through the abandoned oil well drilling holes on the ground, and then performs local area pressure injection of alkaline absorption liquid control by drilling holes in the coal seam during the construction of underground mining tunnels. Finally, during the mining of the working face, short-hole alkaline absorption liquid supplementary control is performed by drilling holes in the coal wall construction direction and in the layer, and the effect is tested, so as to realize the advance, efficient and refined control of hydrogen sulfide in the coal seam in the area affected by the abandoned oil well.

The invention discloses a system and method for treating stink and peculiar smell, the system comprises a gas inlet pipeline, a hypochlorous acid generating device and a spraying reaction device, the hypochlorous acid generating device comprises a hypochlorous acid generator, and the hypochlorous acid generator is communicated with a hypochlorous acid collecting box and a sodium hydroxide collecting box; the spray reaction device comprises a first-stage spray tower, a second-stage spray tower and a third-stage synergistic reaction tower which are sequentially communicated, and a circulating spray passage formed by the first-stage spray tower, the second-stage spray tower and the third-stage synergistic reaction tower and the circulating water tank. According to the method, a treatment system is used for treating foul odor. The system has the advantages of low cost, good purification effect, small secondary pollution risk and the like, can efficiently remove various foul odors and odors in waste gas when being used for treating different types of foul odors and odors, can effectively improve the surrounding environment of a paper mill, and is beneficial to environmental protection. The method has the advantages of simple process, convenience in operation, low cost, high treatment efficiency, good removal effect and the like, and is less in agent dosage, less in waste liquid yield, more environment-friendly, high in use value and good in application prospect.

The invention belongs to the field of wastewater treatment, and particularly relates to an in-situ treatment method for acidic water seeping from a sulfur-containing waste rock pile, which comprises the following steps: drilling and distributing holes in the sulfur-containing waste rock pile to be treated; a sterilizing agent is injected into the drill hole for sterilization treatment, alkali liquor is injected into the drill hole for alkali treatment after sterilization treatment, the drill hole is washed after alkali treatment, and a pretreated drill hole is obtained; the pretreated drill holes are filled with bacteria-loaded porous carbon and ferrous salt, then the holes are sealed, and then in-situ treatment is carried out on the acid water seeping from the sulfur-containing waste rock heap to be treated; the bacteria-loaded porous carbon is obtained by compounding and modifying raw materials including porous carbon, an organic carbon source, activated sludge and sulfate; the activated sludge contains sulfate reducing bacteria and iron reducing bacteria. The method can adapt to hole treatment characteristics, and can realize in-situ long-acting treatment of the acidic water seeping from the sulfur-containing waste rock heap.

The invention discloses a concurrent management method and system for multiple electric energy quality problems of a low-voltage AC / DC hybrid power distribution network. The method comprises the following steps: acquiring historical operation data of a power distribution area, wherein the historical operation data of the power distribution area at least comprises area voltage, power flow and output data of each device; carrying out load flow calculation according to the historical operation data of the power distribution area, and building a Markov decision process model for concurrent management of multiple power quality problems; and in combination with a reinforcement learning algorithm, solving the Markov decision process model for concurrent governance of multiple power quality problems to obtain an equipment scheduling decision. The invention provides a Markov decision process model for concurrent governance of multiple power quality problems, the model takes operation data such as transformer area voltage and power flow as a state space, builds a Markov low-voltage AC / DC hybrid power distribution network environment, solves the environment model, and realizes concurrent effective governance of the multiple power quality problems.

The invention provides a modifier spraying device for soil remediation. The walking wheels are fixedly installed on the left sides of the bottoms of the brackets, the shoveling and spraying mechanism is arranged at the bottoms of the brackets, the spraying mechanism is arranged between the brackets, the stirring mechanism is arranged in the pesticide box, and the soil breaking mechanism is arranged at the bottoms of the brackets. A water tank mounting plate is fixedly mounted on the surface of one side of the mounting plate, and a shielding cleaning mechanism is arranged at the bottom of the water tank mounting plate. According to the modifier spraying device for soil remediation, the shoveling and spraying mechanism and the spraying mechanism of the device fall to the land surface by starting the device, a large-area soil area can be covered in a short time, the working efficiency is greatly improved, a modifier can make full contact and react with soil particles, and the soil remediation effect is improved. Therefore, the physical, chemical and biological properties of the soil are effectively improved, the fertility and water and fertilizer retention capacity of the soil are improved, and a good soil environment is created for plant growth.

The invention discloses intelligent integrated multi-pollutant and greenhouse gas comprehensive collaborative treatment equipment. Comprising a control area (1), a pretreatment area (2), a desulfurization area (3), a demisting area (4), a VOCs purification area (5) and an alkali liquor area (6), the control area (1), the pretreatment area (2), the desulfurization area (3), the demisting area (4), the VOCs purification area (5) and the alkali liquor area (6) are integrated and mounted on movable equipment. Through intelligent integrated design, the device can effectively solve the problem that multiple pollutants are difficult to treat, and the device is short in installation and construction time, low in cost, convenient to transport and small in occupied area. According to different flue gas conditions, good effects are achieved, and compared with engineering projects such as large-scale construction and design of a large reaction tower, the device has great advantages in the aspects of construction period, cost and use effect.

The utility model belongs to the technical field of coal bunker gas treatment systems, and discloses a movable gas centralized discharge device and system installed in a coal storage bunker. The device comprises two rails which are arranged side by side, a gas collecting hood is arranged between the two rails in a sliding mode through a hanging bracket, two discharging connectors are formed in the top of the gas collecting hood, and the gas collecting hood moves to the position above a coal unloading opening in the coal unloading process and covers the coal unloading opening. The gas collecting hood is connected with an extraction branch pipe through an anti-explosion extraction type local ventilator and a telescopic hose and then is connected to a drainage main pipe, and gas gushing out of coal discharged by a coal feeder is drained outdoors through a drainage connector for natural drainage. In addition, when faults are handled and overhauled, only pushing and moving are needed, and normal production is not affected. A new scheme is provided for gas control in the coal storage bunker, concentrated drainage of gas is achieved, dust generated in the coal unloading process of the coal feeder can be discharged in a concentrated mode, and the influence of the dust under the coal storage bunker on the environment is improved.

The invention discloses a pipemidic acid production wastewater treatment and resource recycling method, and belongs to the technical field of wastewater treatment.The method comprises the following steps that S1, suspended solids in pipemidic acid production wastewater are removed through gravity precipitation; s2, alkali is added to adjust the PH value to 9; s3, removing pipemidic acid in the pipemidic acid production wastewater through resin adsorption; s4, desalination treatment: salt is recycled, and after desalination treatment, the wastewater enters a production washing procedure or is directly discharged; s5, resin desorption and regeneration treatment: the resin is recycled, and desorption liquid enters a recycling process; s6, acidification, salting-out and filtration treatment: directly entering a pipemidic acid production process to serve as a raw material or entering a next batch of desorption agent to be circularly applied, and recycling pipemidic acid; unification of wastewater treatment and resource recycling is achieved, and good environmental benefits, social benefits and economic benefits are achieved.

The utility model belongs to the industrial and mining tail gas purification equipment technical field, specifically disclose a kind of floatation workshop VOCs gas treatment system, including cyclone tower, mechanical oil mist purifier and activated carbon adsorber, spray liquid and smoke dust reverse contact in cyclone tower, remove large particle in smoke dust, small amount of volatile gas and organic matter, waste gas is exported from the gas outlet of cyclone tower top after preliminary purification, then in turn enter mechanical oil mist purifier and activated carbon adsorber, remove residual particulate matter in waste gas, water vapor, floatation reagent and volatile organic matter and oil class material, finally, the gas after treatment reaches standard is discharged to high altitude through chimney, the spray liquid containing particulate matter and organic matter exported from cyclone tower bottom liquid outlet is handled by oil-water separator and waste residue filtering device, and is pumped to cyclone tower by water pump and is recycled, the utility model floatation workshop VOCs gas treatment system, can effectively treat floatation workshop smoke dust containing waste gas, high efficiency, low energy consumption, process flow is simple.

The invention discloses a system logic topological graph automatic generation method for power grid business, which belongs to the technical field of power grids, and comprises a data layer, a business layer and a UI layer, and is characterized in that power information data in a power distribution network is imported into a database to form the data layer; the business layer comprises a data simulation module, a data management module, a visual layout module and an interaction control module, and the data simulation module extracts desired data from the business layer; and the data management module processes the sample data generated by the data simulation module and provides data support for the visual layout module and the interaction control module. The automatic drawing technology can greatly shorten the generation time of the topological graph and improve the updating speed, and the automatically generated power system topological graph can accurately reflect the latest state of the power grid.

The invention relates to hydraulic engineering expansion joint change quantitative detection equipment, and belongs to the technical field of detection equipment. Comprising a mounting shell, a pair of detection plates arranged at the bottom of the mounting shell and two first dial plates arranged at the top of the mounting shell, and each first dial plate comprises a first rotating shaft rotationally connected to the top of the mounting shell, a first pointer connected to the top end of the first rotating shaft and a first driving disc connected to the bottom end of the first rotating shaft; the bottom end of the first rotating shaft is rotationally connected to the bottom face of the inner wall of the mounting shell, a damping ring is arranged between the first rotating shaft and the bottom face of the inner wall of the mounting shell, the first driving rod and the second driving rod are both in a rack shape, a first outer gear ring is rotationally connected to the outside of the first driving disc, and a one-way driver is arranged between the first driving disc and the first outer gear ring. The transmission directions of the one-way drivers arranged in the two first dial plates are opposite. According to the invention, the problems of single function and large limitation of expansion joint detection equipment in the prior art are solved.

The invention discloses a power distribution area voltage imbalance treatment method and system based on a phase-change switch and an SVG. The method comprises the steps that firstly, a power distribution network full-node voltage imbalance optimization multi-objective function and a phase-change switch phase sequence and SVG compensation instruction current optimization model are established; calculating a node three-phase voltage by adopting a three-phase unbalanced load flow, and optimizing the obtained phase-change switch phase sequence and SVG compensation instruction current optimization model by using a fast non-dominated sorting genetic algorithm to obtain a Pareto leading solution set of phase-change switch phase sequence optimization and SVG negative sequence compensation current; screening the obtained Pareto leading-edge solution set, and selecting a result which not only meets the national standard but also can reduce the commutation frequency of the commutation switch and the negative sequence compensation current of the SVG as an optimal instruction; according to the obtained optimal instruction, a commutation instruction and a compensation current instruction are issued to a commutation switch and an SVG in the power distribution network respectively, and comprehensive treatment of the voltage unbalance of all nodes of the power distribution network is achieved.

The invention discloses an associated risk hierarchical management and control and hidden danger troubleshooting and treatment method, which belongs to the field of dual prevention mechanisms, and comprises the following steps of: 1, forming a risk identification list by taking various places, equipment facilities and operation activities in the emergency industry as basic risk units; 2, obtaining previous disaster records of risk units of the same type through big data, and carrying out risk assessment on the risk units on the risk identification list according to the previous disaster records; 3, establishing a security monitoring identification list; step 4, generating a radar map based on the safety monitoring identification list, and constructing a hidden danger troubleshooting priority list based on the radar map; step 5, carrying out hidden danger investigation on the risk units according to the priority list; and 6, formulating accident potential treatment schemes and measures for the risk units with potential hazards. According to the invention, through deep association of risk grading management and control and hidden danger investigation and treatment, risk hidden dangers can be timely and effectively found and treated.