CN115267427B - New energy power system state monitoring analysis terminal based on data driving - Google Patents
New energy power system state monitoring analysis terminal based on data driving Download PDFInfo
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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Abstract
The invention discloses a new energy power system state monitoring and analyzing terminal based on data driving, which relates to the technical field of power system monitoring and analyzing. The invention can effectively avoid the influence on the USB plugs at the two ends and the equipment connected with the USB plugs after the middle section of the power supply lead is pulled, prevent the occurrence of poor contact caused by false touch and further ensure the normal operation of the alarm.
Description
Technical Field
The invention relates to the technical field of power system monitoring and analysis, in particular to a new energy power system state monitoring and analysis terminal based on data driving.
Background
A large amount of new energy with strong randomness is connected into a power grid, so that a serious challenge is brought to the voltage stability of the power system, the probability voltage stability analysis aiming at the power system is extremely important, and the probability voltage stability analysis can effectively reveal the influence of the uncertainty of the large-scale new energy output on the voltage stability of the power system.
In the prior art, in order to better perform probability voltage stabilization calculation, a probability voltage stabilization evaluation algorithm based on wind-light data driving has been developed, the algorithm takes historical data such as wind speed, illumination intensity and the like as input, deep excavates correlation between input data through a Bayesian network and establishes an input probability model based on data driving, then a random response surface method is adopted to construct a substitution model of voltage stabilization analysis, and large-scale probability voltage stabilization calculation is performed based on the substitution model, so that probability analysis efficiency can be greatly improved.
When the algorithm is used for monitoring and analyzing the state of the power system, the algorithm is usually directly operated in a specific working computer, and the computer is connected with a power system database so as to be convenient for capturing the operation data of the power system in real time, and in addition, an alarm is connected on the working computer through a USB interface so as to be convenient for alarm work when the output result exceeds a threshold value.
However, the power system state monitoring and analyzing terminal still has some defects found by the actual use of the power system state monitoring and analyzing terminal by the person skilled in the art, and obviously, as the alarm is connected with the host of the working computer through the USB interface on the working computer, the host is usually placed at the bottom of the office desk, and therefore, the situation that the USB end is knocked or the USB cable is pulled due to the action of the legs of the person easily occurs in the use process, and the situation that the alarm is in poor contact is possibly caused in the two situations, so that the normal alarm of the alarm cannot be ensured.
Therefore, it is necessary to invent a new energy power system state monitoring and analyzing terminal based on data driving to solve the above problems.
Disclosure of Invention
The invention aims to provide a new energy power system state monitoring and analyzing terminal based on data driving so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a new forms of energy electric power system state monitoring analysis terminal based on data drive, includes host computer and display, the host computer right side is provided with first installation mechanism, the display left side is provided with second installation mechanism, the fixed alarm that is provided with in second installation mechanism left side, the alarm bottom is provided with telescopic USB coupling mechanism, the alarm passes through telescopic USB coupling mechanism and is connected with the host computer, be provided with first stop gear and second stop gear on the telescopic USB coupling mechanism, first stop gear sets up on first installation mechanism, L shape locating slot board and first grip block carry out spacingly to one casing in the telescopic USB coupling mechanism in the first stop gear, second stop gear sets up on second installation mechanism, second grip block and third screw sleeve carry out spacingly to another casing in the telescopic USB coupling mechanism in the second stop gear.
Preferably, the first mounting mechanism comprises an inverted U-shaped mounting plate, a side clamping plate, a first screw, a first threaded sleeve and a C-shaped mounting plate;
the utility model discloses a U-shaped mounting panel, including the main part, the side splint is connected in the main part top in a sleeved mode, the side splint all is provided with two with first screw rod, two the side splint slides the nestification and sets up in the side of falling U-shaped mounting panel top both sides and extends to the side of falling U-shaped mounting panel bottom, two first screw rod runs through two side splint respectively and passes through the bearing rotation with two side splint and be connected, first screw sleeve cup joints in two first screw rod outsides and with two first screw rod threaded connection, the C shape mounting panel is fixed to be set up in the side of falling U-shaped mounting panel right side, C shape mounting panel bottom and main part laminating.
Preferably, the second installation mechanism comprises an upper groove plate, a lower groove plate, a pull ring, an outer lifting column, a first spring, an inner lifting column, a second spring and a locking compression bar;
the lower groove plate is positioned at the top of the upper groove plate, the upper groove plate and the lower groove plate are sleeved with the left side of the display together, the pull ring is fixedly arranged at the top of the lower groove plate, the outer lifting column is arranged in the upper groove plate in a sliding way, the top end of the outer lifting column is fixedly connected with the lower groove plate, the first spring is positioned in the upper groove plate, one end of the first spring is fixedly connected with the inner wall of the upper groove plate, the other end of the first spring is fixedly connected with the outer lifting column, the inner lifting column is arranged inside the outer lifting column in a sliding nested mode, the second spring is located inside the outer lifting column, one end of the second spring is fixedly connected with the inner wall of the outer lifting column, the other end of the second spring is fixedly connected with the inner lifting column, and the locking pressing rod is arranged on the right side of the upper groove plate in a sliding nested mode and is fixedly connected with the inner lifting column.
Preferably, the telescopic USB connecting mechanism comprises a power supply wire, a USB plug and two groups of telescopic mechanisms, wherein the telescopic mechanisms comprise a shell, a wind-up roll, a rotating shaft and a torsion spring;
USB plug is provided with two, two USB plug connects respectively in the power wire both ends, the casing slides and cup joints and set up in the power wire outside, the wind-up roll is located inside the casing, the power wire runs through wind-up roll middle part and with wind-up roll fixed connection, the power wire winds in the wind-up roll outside, the rotation axis all is provided with two with the torsional spring, two the rotation axis is fixed respectively to be set up in the wind-up roll both ends, two the torsional spring cup joints respectively in two rotation axis outsides, torsional spring one end and wind-up roll fixed connection and other end and shells inner wall fixed connection.
Preferably, the first limiting mechanism comprises an L-shaped positioning groove plate, a first clamping plate, a second screw rod, a cladding plate and a first bevel gear;
the L-shaped positioning groove plate is fixedly arranged on the inner side of the C-shaped mounting plate, the first clamping plate is arranged on the C-shaped mounting plate in a sliding nested mode, the second screw penetrates through the first clamping plate and is in threaded connection with the first clamping plate, the cladding plate is rotatably sleeved on the outer side of the second screw through a bearing and is fixedly connected with the C-shaped mounting plate, the first bevel gears are two, the two first bevel gears are meshed with each other, one of the first bevel gears is fixedly sleeved on the outer side of the first threaded sleeve, and the other of the first bevel gears is fixedly arranged at the left end of the second screw.
Preferably, the second limiting mechanism comprises a linkage screw, a second threaded sleeve, a U-shaped positioning groove plate, a second clamping plate, a guide rod, a third screw, a third threaded sleeve and a second bevel gear;
the linkage screw rod is fixed to be set up in outer lift post bottom, the second screw sleeve cup joints and sets up in the second screw sleeve outside and with second screw sleeve threaded connection, the second screw sleeve passes through the bearing and rotates to set up in the interior of last frid, U-shaped locating slot board is fixed to be set up in last frid side, the laminating of second grip block sets up in U-shaped locating slot board tip, guide bar slip nest sets up in U-shaped locating slot board tip, and with second grip block fixed connection, third screw one end and second grip block fixed connection and other end threaded connection are inboard in third screw sleeve, third screw sleeve passes through the bearing and rotates to set up in U-shaped locating slot board inside, the second bevel gear is provided with two, two second bevel gears intermeshing, one the second bevel gear is fixed to be cup jointed and is set up in the second screw sleeve outside, another the second bevel gear is fixed to be set up in third screw sleeve left end.
The invention has the technical effects and advantages that:
according to the invention, the first installation mechanism, the second installation mechanism, the telescopic USB connection mechanism, the first limiting mechanism and the second limiting mechanism are arranged, so that the second installation mechanism is installed on the host by using the first installation mechanism, the second limiting mechanism is installed on the display by using the second installation mechanism, and meanwhile, in the installation process of the display and the second installation mechanism, the second installation mechanism and the second limiting mechanism can be respectively triggered, so that the second installation mechanism and the second limiting mechanism fix the telescopic USB connection mechanism, and then when a user mistakenly touches the middle section of the power wire to cause the pulling of the middle section of the power wire, two winding rollers are respectively driven to rotate at two ends of the middle section of the power wire to pay off the power wire when rotating, so that the middle section of the power wire is in a loose state, and the influence on the host and the display when the middle section of the power wire is pulled is avoided.
Drawings
Fig. 1 is a schematic overall front view of the present invention.
Fig. 2 is a schematic front view of the first mounting mechanism and the first limiting mechanism according to the present invention.
Fig. 3 is a schematic top view of the first mounting mechanism and the first limiting mechanism according to the present invention.
Fig. 4 is a schematic rear sectional view of a second mounting mechanism of the present invention.
Fig. 5 is a schematic diagram of a front cross-sectional structure of the telescopic USB connection mechanism of the present invention.
Fig. 6 is a schematic rear view of a second mounting mechanism and a second limiting mechanism according to the present invention.
In the figure: 1. a host; 2. a display; 3. a first mounting mechanism; 31. an inverted U-shaped mounting plate; 32. a side clamping plate; 33. a first screw; 34. a first threaded sleeve; 35. a C-shaped mounting plate; 4. a second mounting mechanism; 41. an upper groove plate; 42. a lower trough plate; 43. a pull ring; 44. an outer lifting column; 45. a first spring; 46. An inner lifting column; 47. a second spring; 48. a locking pressure lever; 5. an alarm; 6. a telescopic USB connection mechanism; 61. a power supply wire; 62. a USB plug; 63. a housing; 64. a wind-up roll; 65. a rotation shaft; 66. a torsion spring; 7. a first limiting mechanism; 71. l-shaped positioning groove plates; 72. a first clamping plate; 73. a second screw; 74. coating the plate; 75. a first bevel gear; 8. a second limiting mechanism; 81. a linkage screw; 82. A second threaded sleeve; 83. u-shaped positioning groove plates; 84. a second clamping plate; 85. a guide rod; 86. a third screw; 87. a third threaded sleeve; 88. and a second bevel gear.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention provides a new energy power system state monitoring and analyzing terminal based on data driving as shown in fig. 1-6, which comprises a host 1 and a display 2, wherein a first installation mechanism 3 is arranged on the right side of the host 1, a second installation mechanism 4 is arranged on the left side of the display 2, an alarm 5 is fixedly arranged on the left side of the second installation mechanism 4, a telescopic USB connection mechanism 6 is arranged at the bottom of the alarm 5, the alarm 5 is connected with the host 1 through the telescopic USB connection mechanism 6, a first limit mechanism 7 and a second limit mechanism 8 are arranged on the telescopic USB connection mechanism 6, the first limit mechanism 7 is arranged on the first installation mechanism 3, an L-shaped positioning groove plate 71 and a first clamping plate 72 in the first limit mechanism 7 limit one shell 63 in the telescopic USB connection mechanism 6, the second limit mechanism 8 is arranged on the second installation mechanism 4, and a second clamping plate 84 and a third threaded sleeve 87 in the second limit mechanism 8 limit the other shell 63 in the telescopic USB connection mechanism 6.
As shown in fig. 1 and fig. 2, the first installation mechanism 3 includes an inverted U-shaped installation plate 31, side clamping plates 32, a first screw 33, a first threaded sleeve 34 and a C-shaped installation plate 35, wherein, the inverted U-shaped installation plate 31 is sleeved and arranged at the top of the host computer 1, the inverted U-shaped installation plate 31 is arranged to carry on two side clamping plates 32, the side clamping plates 32 and the first screw 33 are both provided with two, two side clamping plates 32 are slidably nested and arranged at two sides of the top of the inverted U-shaped installation plate 31 and extend to the bottom of the inverted U-shaped installation plate 31, two first screws 33 respectively penetrate through the two side clamping plates 32 and are connected with the two side clamping plates 32 through bearings in a rotating manner, the first threaded sleeve 34 is sleeved and arranged at the outer side of the two first screw 33 and is connected with the two first screw 33 in a threaded manner, the C-shaped installation plate 35 is fixedly arranged at the right side of the inverted U-shaped installation plate 31, the bottom of the C-shaped installation plate 35 is attached to the host computer 1, and the side clamping plates 32, the first screw 33, the first threaded sleeve 34 and the C-shaped installation plate 35 are arranged to enable the first threaded sleeve 34 to pull the first screw 33 to carry out the first clamping plates 33, and further fix the first screw 1.
As shown in fig. 4 and 6, the second mounting mechanism 4 includes an upper slot plate 41, a lower slot plate 42, a pull ring 43, an outer lifting column 44, a first spring 45, an inner lifting column 46, a second spring 47 and a locking compression rod 48, wherein the lower slot plate 42 is located at the top of the upper slot plate 41, the upper slot plate 41 and the lower slot plate 42 are jointly sleeved with the left side of the display 2, the upper slot plate 41 and the lower slot plate 42 are arranged to be clamped at the left side of the display 2, the pull ring 43 is fixedly arranged at the top of the lower slot plate 42, the pull ring 43 is arranged to be used for pulling the lower slot plate 42, the outer lifting column 44 is slidably arranged inside the upper slot plate 41, the top end of the outer lifting column is fixedly connected with the lower slot plate 42, the first spring 45 is located inside the upper slot plate 41, the first spring 45 one end and the inner wall fixed connection of going up the frid 41 and the other end and outer lift post 44 fixed connection, the setting of outer lift post 44 and first spring 45 is used for driving it to reset after lower frid 42 breaks away from by last frid 41 top, interior lift post 46 slip nestification is set up in the inside of outer lift post 44, the second spring 47 is located the inside of outer lift post 44, second spring 47 one end and outer lift post 44 inner wall fixed connection and the other end and interior lift post 46 fixed connection, locking depression bar 48 slip nestification is set up in last frid 41 right side, and with interior lift post 46 fixed connection, interior lift post 46, the setting of second spring 47 and locking depression bar 48 is used for compressing tightly casing 63 by casing 63 top.
As shown in fig. 2, fig. 4 and fig. 5, the telescopic USB connection mechanism 6 includes a power wire 61, a USB plug 62 and two groups of telescopic mechanisms, the telescopic mechanisms include a housing 63, a winding roller 64, a rotating shaft 65 and a torsion spring 66, wherein the USB plug 62 is provided with two, two USB plugs 62 are respectively connected at two ends of the power wire 61, two USB plugs 62 are respectively connected with the host 1 and the alarm 5 in a plugging manner, the housing 63 is slidably sleeved on the outer side of the power wire 61, the housing 63 is used for accommodating the winding roller 64, the winding roller 64 is located inside the housing 63, the power wire 61 penetrates through the middle of the winding roller 64 and is fixedly connected with the winding roller 64, the power wire 61 is wound on the outer side of the winding roller 64, the winding roller 64 is used for winding and accommodating the power wire 61, the rotating shaft 65 and the torsion spring 66 are respectively fixedly arranged at two ends of the winding roller 64, the two torsion spring 66 are respectively sleeved on the outer sides of the two rotating shafts 65, one end of the winding roller 64 is fixedly connected with the other end of the winding roller 64, the other end of the torsion spring 63 is fixedly connected with the inner wall 63, and the winding roller 63 is fixedly connected with the winding roller 63, and the winding roller 63 is protruded out of the housing 61.
As shown in fig. 2 and 3, the first limiting mechanism 7 includes an L-shaped positioning slot plate 71, a first clamping plate 72, a second screw 73, a cladding plate 74 and a first bevel gear 75, where the L-shaped positioning slot plate 71 is fixedly disposed on the inner side of the C-shaped mounting plate 35, the first clamping plate 72 is slidably nested and disposed on the C-shaped mounting plate 35, the L-shaped positioning slot plate 71 and the first clamping plate 72 are configured to clamp the housing 63, the second screw 73 penetrates the first clamping plate 72 and is in threaded connection with the first clamping plate 72, the second screw 73 is configured to drive the first clamping plate 72 to move left and right, the cladding plate 74 is rotatably sleeved on the outer side of the second screw 73 and is fixedly connected with the C-shaped mounting plate 35 through a bearing, the cladding plate 74 is configured to mount the second screw 73, the first bevel gear 75 is provided with two first bevel gears 75, one of the first bevel gears 75 is fixedly sleeved on the outer side of the first threaded sleeve 34, and the other first bevel gear 75 is fixedly disposed on the left side of the first bevel gear 75 to drive the first screw 73 to rotate synchronously when the first screw 73 is configured to rotate.
As shown in fig. 6, the second limiting mechanism 8 includes a linkage screw 81, a second threaded sleeve 82, a U-shaped positioning slot plate 83, a second clamping plate 84, a guide rod 85, a third screw 86, a third threaded sleeve 87 and a second bevel gear 88, wherein the linkage screw 81 is fixedly disposed at the bottom end of the outer lifting column 44, the linkage screw 81 is configured to drive the second threaded sleeve 82 to rotate, the second threaded sleeve 82 is sleeved outside the second threaded sleeve 82 and is in threaded connection with the second threaded sleeve 82, the second threaded sleeve 82 is rotatably disposed inside the upper slot plate 41 through a bearing, the second threaded sleeve 82 is configured to drive the third threaded sleeve 87 to rotate through two second bevel gears 88, the U-shaped positioning slot plate 83 is fixedly disposed at the side of the upper slot plate 41, the second clamping plate 84 is attached to the end of the U-shaped positioning slot plate 83, the second clamping plate 84 is configured to be clamped and fixed by the side of the housing 63, the guide rod 85 is slidably nested and disposed at the end of the U-shaped positioning slot plate 83, and is rotatably nested with the second threaded sleeve 82 and is rotatably disposed inside the second threaded sleeve 82 through two second bevel gears 88, the second threaded sleeve 82 is fixedly disposed at the other end of the second clamping plate 84, the second clamping plate 84 is rotatably coupled with the second tapered sleeve 88, the second clamping plate 84 is fixedly disposed at the other end of the second clamping plate 84, and is rotatably disposed at the second end of the second clamping plate 84 is rotatably via the second clamping plate 84, the other second bevel gear 88 is fixedly disposed at the left end of the third threaded sleeve 87, and the second bevel gear 88 is configured to drive the second clamping plate 84 to rotate synchronously when the second threaded sleeve 82 rotates.
Example 2
It should be noted that, when the probabilistic voltage stability evaluation algorithm is generated, firstly, data collection of topology, conventional power supply, load and other data in the power system is required, a technician can establish a static voltage stability analysis model according to the data, and in the static voltage stability analysis of the power system, the nose tip point of the P-V curve represents the maximum load margin which can be born by the system, which is also called as a voltage collapse critical point, and the continuous power flow method is an effective means for calculating the maximum load margin (voltage collapse point) of the power system, and the algorithm solves the load margin parameter epsilon based on the continuous power flow, and has the following formula:
where PLi0 and QLi0 represent active and reactive reference loads, PGi and QGi0 represent reference amounts of active and reactive output of a conventional generator, PRi and QRi are active and reactive power of wind power and photovoltaic output, KGi and KLi represent multiplier coefficients of load and conventional generator output, respectively, a maximum value of a load margin parameter epsilon is a maximum load margin, denoted by epsilon-phase, and when epsilon=epsilon-phase, the system is at a voltage collapse point (critical state).
Equation (1) can be iteratively solved repeatedly by a predictive correction method, and can be abstractly expressed into the following form if the equation is regarded as a multi-input single-output hidden function:
ε nose ＝f(X) (2)
the input variables represented by X comprise generator output, load, power system topology parameters and the like. If wind power and photovoltaic output uncertainty are considered and considered as random variables, the problem is changed into a probability static voltage stability calculation problem;
after collection of wind power field wind speed data and photovoltaic power station illumination historical data of an electric power system is completed, a BN is utilized to establish an input probability model based on wind and light data driving, and it is to be noted that the BN is a Bayesian network, the Bayesian network uses multidimensional wind and light historical data as input, and a joint probability distribution considering multidimensional random variables is established based on a data mining view angle, so that the method has the capability of strongly processing complex correlation information, generally, the BN comprises a structural diagram G and a parameter set B, each random variable Xi (i=1, 2, …, n) is represented by a node in the structural diagram G, and the relation and the influence degree among the variables are respectively described by directed edges and the parameter B.
Let xi be a priori knowledge, X be a random variable, d= { x1=x1, x2=x2, …, xm=xm } be an observation sample obtained by repeating an experiment m times, and the parameter θ be a priori probability (θ=p (x|ζ)) when the event x=x occurs, and P (θ|ζ) be a probability density function of θ. Given the sample D and the prior probability density P (θ|ζ) when event x=x occurs, P (xm+1=xm+ 1|D, ζ) is found by the full probability formula:
P(X m+1 ＝x m+1 |D,ξ)＝∫P(X m+1 ＝x m+1 |θ,D,ξ)P(θ|D,ξ)dθ (3)
the posterior probability P (θ|d, ζ) can be obtained from the prior probability density P (θ|ζ) according to the bayesian theorem:
the parent node set of node Xi is denoted by Pa (Xi), the conditional probability density of the random variable Xi is P (xi|pa (Xi), ζ). According to the bayesian theorem, the global joint probability distribution can be expressed as:
then selecting a small number of sample points to input a static voltage stability analysis original model based on LHS and obtaining a corresponding input/output sample set, then establishing a substitution model of static voltage stability analysis based on SRSM algorithm and combining the obtained small number of input/output data sets, wherein in the process of carrying out large-scale probability analysis by utilizing the static voltage stability analysis original model of a power system, each probability calculation needs repeated iterative solution to obtain the maximum load margin of the system, so that probability calculation is extremely time-consuming based on the original model, a random response surface method uses an analytic algebraic polynomial to fit a function relation between input and output of the voltage stability analysis original model in high precision, further establishes a substitution model of the voltage stability analysis original model, carries out large-scale PVSA by utilizing the substitution model instead of the original model, can avoid large-scale iterative solution calculation, remarkably improves the probability analysis efficiency, and establishes the SRSM model mainly comprises the following three steps:
1) Establishing a chaos polynomial containing a random variable to be solved
The input-output relation based on Hermite chaos polynomial approximate voltage stability analysis original model can be expressed as
Wherein, xi is random variable which obeys standard normal distribution, n is the number of input random variable; a0, a i1 、a i2 … are undetermined parameters of the chaotic polynomial; hm (ζ1, ζ2, …, ζm) is a m-order Hermite polynomial of ζ.
The higher the order m selected in the expression (15), the higher the approximation accuracy to the original model, but the larger the calculation amount. The 2 nd order chaotic polynomial is generally selected to have higher practicability, and can be expressed as:
2) Defining mapping relation of uncertainty source probability distribution and standard normal distribution in power system
The conversion relation between the probability distribution of uncertainty sources and the random variable from standard normal distribution in the actual power system is as follows:
X＝F -1 (Φ(ξ)) (17)
wherein F-1 is the inverse of the cumulative probability distribution function of X; Φ is the cumulative distribution function of the standard normal distribution variables.
3) Determining pending parameters
The main idea for solving the parameters to be determined in the formula (16) is as follows: and extracting a small number of sample point input voltage stability analysis original models on the basis of a Latin hypercube algorithm (Latin hypercube sampling, LHS) to perform small-batch probability voltage stability calculation, obtaining a small number of input-output sample sets, and estimating the coefficients of the chaos polynomial in the formula (16) by utilizing a least square fitting method on the basis of the input-output sample sets of the small number of original models. Assume that the system input and output relationships can be expressed as:
y i ＝y(X)+ε (18)
the basic idea of the least squares fitting method is: the residual epsilon value is expected to be infinitely close to 0, n groups of input and output values of probability static voltage stability analysis are assumed, and the coefficient of expansion of truncated K+1 chaotic polynomials is beta= (beta) 0 ，β 1 ，...，β K ) T Then the coefficients can be solved by the following formula.
The optimal solution is that
Wherein:
once the undetermined parameters of the chaotic polynomial expansion are obtained, large-scale probability voltage stability analysis can be carried out by using a substitution model, and the SRSM has the main advantages that a substitution model of a complex static voltage stability calculation model is established by using a small number of input and output sample sets, and then the substitution model is used for participating in subsequent large-scale probability analysis calculation, so that the calculation efficiency is greatly improved;
and selecting a large number of sample points based on the LHS in consideration of the input probability model of the wind-solar correlation to input a substitution model for PVSA calculation, and finally statistically analyzing the probability voltage stabilization calculation result.
The working principle of the invention is as follows:
in the actual use process, the inverted U-shaped mounting plate 31 is sleeved on the outer side of the top of the host machine 1, then the shell 63 adjacent to the first mounting mechanism 3 is placed on the inner side of the L-shaped positioning groove plate 71, then the first threaded sleeve 34 is rotated, the first threaded sleeve 34 drives the two first screws 33 to enter the first threaded sleeve 34 when rotating, and at the moment, the two side clamping plates 32 are clamped on the outer side of the host machine 1 under the drive of the two first screws 33, so that the fixation of the first mounting mechanism 3 is completed;
in the process of rotating the first threaded sleeve 34, the first threaded sleeve 34 drives the second screw 73 to rotate through the two first bevel gears 75, so that the second screw 73 drives the first clamping plate 72 to move right, and the first clamping plate 72 moving right compresses the shell 63 on the inner side of the L-shaped positioning groove plate 71, so that the shell 63 is fixed;
then, the pull ring 43 is pulled while the upper groove plate 41 is taken, the linkage screw rod 81 is pulled through the lower groove plate 42 and the outer lifting column 44 when the pull ring 43 is pulled, the second threaded sleeve 82 is driven to rotate when the linkage screw rod 81 is pulled, the second threaded sleeve 82 drives the third threaded sleeve 87 to rotate through the two second bevel gears 88, and the third threaded sleeve 87 drives the second clamping plate 84 to move right through the third screw rod 86;
in addition, when the outer lifting column 44 is pulled and lifted, the locking compression bar 48 is lifted synchronously, at this time, a user can sleeve the upper groove plate 41 and the lower groove plate 42 on the left side of the host machine 1, then place the shell 63 adjacent to the second installation mechanism 4 on the inner side of the U-shaped positioning groove plate 83, then remove the hand from the pull ring 43, at this time, under the pulling of the first spring 45, the outer lifting column 44 drives the lower groove plate 42 to reset, and then clamps on the left side of the host machine 1;
in the resetting process of the lower groove plate 42, the outer lifting column 44 drives the locking compression bar 48 and the linkage screw rod 81 to descend respectively, the top of the shell 63 is pressed and fixed when the locking compression bar 48 descends, the linkage screw rod 81 drives the second threaded sleeve 82 to rotate again when the linkage screw rod 81 descends, and then the third threaded sleeve 87 drives the second clamping plate 84 to move left and reset through the third screw rod 86, and at the moment, the second clamping plate 84 clamps and fixes the shell 63 from the side;
then, a host 1 is used for running a probability voltage stability evaluation algorithm, a calculation result is displayed through a display 2, and when the calculation result exceeds a threshold value, an alarm 5 alarms, so that staff is reminded;
when the C-shaped mounting plate 35 protects the tail end position of the power wire 61, the device is prevented from being touched by a user by mistake in the using process, when the user pulls the middle section of the power wire 61 due to the fact that the user touches the middle section of the power wire 61 by mistake, two winding rollers 64 are respectively driven to rotate at two ends of the middle section of the power wire 61, the winding rollers 64 pay off the power wire 61 when rotating, and further the middle section position of the power wire 61 is in a loose state, and the influence on a host 1 and a display 2 when the middle section of the power wire 61 is pulled is avoided.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (1)
1. The utility model provides a new forms of energy electric power system state monitoring analysis terminal based on data drive, includes host computer (1) and display (2), its characterized in that: the novel USB interface device is characterized in that a first mounting mechanism (3) is arranged on the right side of the host (1), a second mounting mechanism (4) is arranged on the left side of the display (2), an alarm (5) is fixedly arranged on the left side of the second mounting mechanism (4), a telescopic USB connecting mechanism (6) is arranged at the bottom of the alarm (5), the alarm (5) is connected with the host (1) through the telescopic USB connecting mechanism (6), a first limiting mechanism (7) and a second limiting mechanism (8) are arranged on the telescopic USB connecting mechanism (6), the first limiting mechanism (7) is arranged on the first mounting mechanism (3), an L-shaped positioning groove plate (71) and a first clamping plate (72) in the first limiting mechanism (7) limit one shell (63) in the telescopic USB connecting mechanism (6), and a second limiting mechanism (8) is arranged on the second mounting mechanism (4), and a second clamping plate (84) and a third sleeve (87) limit the other shell (63) in the telescopic USB connecting mechanism (6);
the first mounting mechanism (3) comprises an inverted U-shaped mounting plate (31), a side clamping plate (32), a first screw (33), a first threaded sleeve (34) and a C-shaped mounting plate (35);
the device comprises a main machine (1), a reverse U-shaped mounting plate (31), side clamping plates (32) and first screw rods (33), wherein two side clamping plates (32) are arranged at the top of the reverse U-shaped mounting plate (31) in a sliding nested mode and extend to the bottom of the reverse U-shaped mounting plate (31), the two first screw rods (33) penetrate through the two side clamping plates (32) respectively and are connected with the two side clamping plates (32) in a rotating mode through bearings, a first threaded sleeve (34) is sleeved on the outer sides of the two first screw rods (33) and is in threaded connection with the two first screw rods (33), a C-shaped mounting plate (35) is fixedly arranged on the right side of the reverse U-shaped mounting plate (31), and the bottom end of the C-shaped mounting plate (35) is attached to the main machine (1);
the second mounting mechanism (4) comprises an upper groove plate (41), a lower groove plate (42), a pull ring (43), an outer lifting column (44), a first spring (45), an inner lifting column (46), a second spring (47) and a locking compression bar (48);
the lower groove plate (42) is positioned at the top of the upper groove plate (41), the upper groove plate (41) and the lower groove plate (42) are sleeved with the left side of the display (2) together, the pull ring (43) is fixedly arranged at the top of the lower groove plate (42), the outer lifting column (44) is slidably arranged in the upper groove plate (41), the top end of the pull ring is fixedly connected with the lower groove plate (42), the first spring (45) is positioned in the upper groove plate (41), one end of the first spring (45) is fixedly connected with the inner wall of the upper groove plate (41) and the other end of the first spring is fixedly connected with the outer lifting column (44), the inner lifting column (46) is slidably nested in the outer lifting column (44), one end of the second spring (47) is fixedly connected with the inner wall of the outer lifting column (44) and the other end of the second spring is fixedly connected with the inner lifting column (46), and the locking pressing rod (48) is slidably arranged in the right groove plate (41) and fixedly connected with the inner lifting column (46);
the telescopic USB connecting mechanism (6) comprises a power supply lead (61), a USB plug (62) and two groups of telescopic mechanisms, wherein each telescopic mechanism comprises a shell (63), a winding roller (64), a rotating shaft (65) and a torsion spring (66);
the USB plug (62) is provided with two USB plugs (62) are respectively connected to two ends of a power wire (61), the shell (63) is sleeved on the outer side of the power wire (61) in a sliding mode, the winding roller (64) is located inside the shell (63), the power wire (61) penetrates through the middle of the winding roller (64) and is fixedly connected with the winding roller (64), the power wire (61) is wound on the outer side of the winding roller (64), the rotating shaft (65) and the torsion spring (66) are respectively provided with two rotating shafts (65) which are respectively fixedly arranged at two ends of the winding roller (64), the two torsion springs (66) are respectively sleeved on the outer sides of the two rotating shafts (65), one end of each torsion spring (66) is fixedly connected with the winding roller (64), and the other end of each torsion spring is fixedly connected with the inner wall of the shell (63);
the first limiting mechanism (7) comprises an L-shaped positioning groove plate (71), a first clamping plate (72), a second screw (73), a cladding plate (74) and a first bevel gear (75);
the L-shaped positioning groove plate (71) is fixedly arranged on the inner side of the C-shaped mounting plate (35), the first clamping plate (72) is arranged on the C-shaped mounting plate (35) in a sliding nested mode, the second screw (73) penetrates through the first clamping plate (72) and is in threaded connection with the first clamping plate (72), the cladding plate (74) is rotatably sleeved on the outer side of the second screw (73) through a bearing and is fixedly connected with the C-shaped mounting plate (35), the first bevel gear (75) is provided with two first bevel gears (75) which are meshed with each other, one first bevel gear (75) is fixedly sleeved on the outer side of the first threaded sleeve (34), and the other first bevel gear (75) is fixedly arranged at the left end of the second screw (73);
the second limiting mechanism (8) comprises a linkage screw rod (81), a second threaded sleeve (82), a U-shaped positioning groove plate (83), a second clamping plate (84), a guide rod (85), a third screw rod (86), a third threaded sleeve (87) and a second bevel gear (88);
the utility model discloses a three-dimensional screw rod, including outer elevating column (44), linkage screw rod (81), second screw sleeve (82) cup joint set up in second screw sleeve (82) outside and with second screw sleeve (82) threaded connection, second screw sleeve (82) rotate through the bearing and set up in last frid (41) inside, U-shaped locating slot board (83) are fixed to be set up in last frid (41) side, second grip block (84) laminating sets up in U-shaped locating slot board (83) tip, guide bar (85) slip nest set up in U-shaped locating slot board (83) tip, and with second grip block (84) fixed connection, third screw rod (86) one end and second grip block (84) fixed connection and other end threaded connection are inboard in third screw sleeve (87), third screw sleeve (87) rotate through the bearing and set up in U-shaped locating slot board (83) inside, second bevel gear (88) are provided with two second bevel gear (88) laminating sets up in U-shaped locating slot board (83) tip, second bevel gear (88) are mutually engaged with one and are set up in second bevel gear (82) fixed screw sleeve (88) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210810998.6A CN115267427B (en) | 2022-07-11 | 2022-07-11 | New energy power system state monitoring analysis terminal based on data driving |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210810998.6A CN115267427B (en) | 2022-07-11 | 2022-07-11 | New energy power system state monitoring analysis terminal based on data driving |
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| CN115267427A CN115267427A (en) | 2022-11-01 |
| CN115267427B true CN115267427B (en) | 2023-09-22 |
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| CN110855955A (en) * | 2019-12-12 | 2020-02-28 | 赵敏 | Background monitoring equipment |
| CN211017555U (en) * | 2019-06-28 | 2020-07-14 | 河南交通职业技术学院 | USB interface with waterproof function |
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| CN112199650A (en) * | 2020-09-30 | 2021-01-08 | 广东财经大学 | Integrated platform system based on public financial budget management |
| CN212873388U (en) * | 2020-10-21 | 2021-04-02 | 云南电网有限责任公司信息中心 | Data transmission device utilizing cloud computing |
| CN214955850U (en) * | 2021-07-11 | 2021-11-30 | 苏州普尚信息技术有限公司 | Adjustable warning device for energy monitoring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211017555U (en) * | 2019-06-28 | 2020-07-14 | 河南交通职业技术学院 | USB interface with waterproof function |
| CN110855955A (en) * | 2019-12-12 | 2020-02-28 | 赵敏 | Background monitoring equipment |
| CN111600778A (en) * | 2020-05-22 | 2020-08-28 | 广州鹄志信息咨询有限公司 | Dynamic monitoring system and monitoring method for normal operation of IT equipment |
| CN112199650A (en) * | 2020-09-30 | 2021-01-08 | 广东财经大学 | Integrated platform system based on public financial budget management |
| CN212873388U (en) * | 2020-10-21 | 2021-04-02 | 云南电网有限责任公司信息中心 | Data transmission device utilizing cloud computing |
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| CN115267427A (en) | 2022-11-01 |
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