An on-line research and judgment method for environmental protection working conditions of an enterprise production line

Abstract

The present application relates to a kind of enterprise production line environmental protection working condition online research method, comprising the following steps: step S1: the time series active power data of production equipment and environmental protection equipment are respectively obtained;Step S2: time series active power data of production equipment and environmental protection equipment are carried out discrete fourier transform and ACF index calculation, obtain production cycle A and environmental protection cycle B;Step S3: respectively to 30 production cycle and environmental protection cycle power data is traversed statistics, according to the and or relationship of production equipment in production line and the and or relationship of environmental protection equipment, respectively, obtain the opening time C of production equipment and the opening time D of environmental protection equipment, and calculate environmental protection threshold X;Step S4: for T time, the data of previous production cycle and environmental protection cycle are taken respectively for the production equipment and environmental protection equipment of enterprise, and the production opening time E and environmental protection opening time F of production line are counted;Step S5: for T time, according to whether preset rule is judged to be abnormal.

Description

TECHNICAL FIELD

[0001] The present application relates to an enterprise production line environmental protection working condition online research method. BACKGROUND

[0002] The traditional environmental protection determination method mainly relies on on-site chemical substance monitoring, which is high in manpower and material resources cost, low in efficiency, and cannot be monitored in real time. As a necessary energy for enterprise production and life, electric power data has the characteristics of wide coverage, high value density and strong real-time accuracy. By using electric power monitoring to identify the operation of environmental protection equipment instead of traditional chemical monitoring, the standardization of pollution enterprises in the aspects of pollution production, pollution control and pollution discharge is promoted, and the ecological environment problem is improved. It is the extension application of electric power data in the external electric power industry, which effectively helps the ecological environment department to improve the governance ability and modernization of the governance system. SUMMARY

[0003] Therefore, the purpose of the present application is to provide an enterprise production line environmental protection working condition online research method, which aims to solve the above problems.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] An enterprise production line environmental protection working condition online research method comprises the following steps:

[0006] Step S1: obtaining time series active power data of production equipment and environmental protection equipment respectively;

[0007] Step S2: performing discrete Fourier transform and ACF index calculation on the time series active power data of the production equipment and the environmental protection equipment to obtain production cycle A and environmental protection cycle B;

[0008] Step S3: performing traversal statistics on the power data of 30 production cycles and environmental protection cycles respectively, and obtaining the opening time C of the production equipment and the opening time D of the environmental protection equipment according to the and or relationship of the production equipment and the and or relationship of the environmental protection equipment in the production line, and calculating the environmental protection threshold X;

[0009] Step S4: for T moment, taking the data of the previous production cycle and environmental protection cycle of the production equipment and environmental protection equipment of the enterprise respectively, and counting the production opening time E and environmental protection opening time F of the production line;

[0010] Step S5: for T moment, the environmental protection working condition determination rule of the intermittent production line of the enterprise is that if X*(B-F)≤A-E, it is considered that the environmental protection is normal, otherwise it is considered that the environmental protection is abnormal.

[0011] Further, the step S2 is specifically:

[0012] Let the power data of m production equipment of a production line be The power data of the n environmental protection devices is The data length is N;

[0013] The m production devices are regarded as or relationship, and the n environmental protection devices are regarded as or relationship, so that the production line power data is:

[0014]

[0015] The environmental protection power data of the production line is:

[0016]

[0017] The Fourier transform is performed on P pro , P env , and the amplitude with a frequency of k / N is decomposed:

[0018]

[0019]

[0020] wherein (0≤k≤N-1), and the period corresponding to the amplitude is N / k;

[0021] All amplitudes are solved, the amplitudes are arranged in descending order, and the three largest amplitudes are taken to calculate the ACF index;

[0022] For the period N / k, the autocorrelation coefficient is:

[0023]

[0024] wherein P t is the power of the device at t, P t-N / k is the power at t-N / k, is the average power, and the calculation formula is

[0025] After the Fourier transform of P pro , P env , the three largest amplitudes are taken, the autocorrelation coefficients are calculated, and the maximum is taken as the production period and the environmental protection period of the production line.

[0026] Further, the step S3 is specifically:

[0027] The opening threshold of the m production devices of a production line is The opening threshold of the n environmental protection devices is wherein the data length is 1;

[0028] According to the data processing of the and relationship between the devices under the production line, wherein the production device is taken as an example, and means that the production line is in a production state when all the devices are turned on, or means that the production line is in a production state when one of the devices is turned on;

[0029] The state of the jth production device at time T The calculation formula is:

[0030]

[0031] The state of the jth environmental protection device at time T The calculation formula is:

[0032]

[0033] According to the production time of the production line and the environmental protection device statistics between the devices, the data of the previous production cycle and the environmental protection cycle are taken, the production device is in an and relationship, and the production opening duration is:

[0034]

[0035] If the production device is in an or relationship, the production opening duration is:

[0036]

[0037] The environmental protection device is in an or relationship, and the environmental protection opening duration is:

[0038]

[0039] The environmental protection device is in an and relationship, and the environmental protection opening duration is:

[0040]

[0041] After statistics, the production line production opening time C and the production line environmental protection opening time D, then the formula of the environmental protection threshold X is as follows:

[0042]

[0043] Further, the step S4 is specifically:

[0044] For time T, the data of the previous production cycle and the environmental protection cycle of the production device and the environmental protection device of the enterprise are taken, the power data of the m production devices is The data length is A, the power data of the n environmental protection devices is The data length is B; the opening threshold of the m production devices is The opening threshold of the n environmental protection devices is Wherein the data length is 1;

[0045] The jth production equipment state at T moment The calculation formula is:

[0046]

[0047] The jth environmental protection equipment state at T moment The calculation formula is:

[0048]

[0049] According to the production line production time and environmental protection equipment statistics between and or relations, the data of the previous production cycle and environmental protection cycle are taken, the production equipment is and relation, and the production opening duration is:

[0050]

[0051] If the production equipment is or relation, the production opening duration is:

[0052]

[0053] If the environmental protection equipment is or relation, the environmental protection opening duration is:

[0054]

[0055] If the environmental protection equipment is and relation, the environmental protection opening duration is:

[0056]

[0057] Compared with the prior art, the present application has the following beneficial effects:

[0058] The present application is aimed at the environmental protection working condition abnormality determination method of intermittent enterprise production line, the environmental protection working condition of enterprise and its equipment is researched and judged, the running cycle of production equipment and environmental protection equipment in the production line is extracted, the and or relation between equipment is considered, the environmental protection threshold is defined, the determination of environmental protection working condition is more scientific and reasonable, and is more in line with actual production and environmental protection process. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1 It is the method flow chart of the present application;

[0060] Figure 2 It is the environmental protection working condition determination schematic diagram in an embodiment of the present application. DETAILED DESCRIPTION

[0061] The present application will be further described below in combination with the drawings and embodiments.

[0062] Please refer to Figure 1 The present application provides an enterprise production line environmental protection working condition online research and judgment method, which comprises the following steps:

[0063] Step S1: install power monitoring devices on each production device and environmental protection device under a certain production line in the enterprise, respectively, to obtain time-series active power data of the production device and the environmental protection device;

[0064] Step S2: process the power data of the device in the past three months using the OR relationship to obtain production line production power data and environmental protection power data, perform discrete Fourier transform on the data, take the maximum 3 amplitudes, respectively calculate the corresponding periods, and use ACF to calculate and compare, to obtain production period A and environmental protection period B;

[0065] Step S3: traverse and count the power data of 30 production periods and environmental protection periods, respectively, according to the AND relationship of the production devices in the production line and the AND relationship of the environmental protection devices, to obtain the opening time C of the production device and the opening time D of the environmental protection device, and calculate the environmental protection threshold X;

[0066] Step S4: for T time, take the data of the previous production period and environmental protection period of the production device and the environmental protection device of the enterprise, respectively, to count the production opening time E and the environmental protection opening time F of the production line;

[0067] Step S5: for T time, the environmental protection working condition judgment rule of the intermittent production line of the enterprise is that if X*(B-F)≤A-E, it is considered that the environmental protection is normal, otherwise it is considered that the environmental protection is abnormal.

[0068] In this embodiment, step S2 is specifically:

[0069] Let the power data of m production devices of a production line be The power data of n environmental protection devices is The data length is N;

[0070] The m production devices are regarded as an OR relationship, and the n environmental protection devices are regarded as an OR relationship, so the production power data under the production line is:

[0071]

[0072] The environmental protection power data under the production line is:

[0073]

[0074] Perform Fourier transform on P pro , P env , and decompose the amplitude with a frequency of k / N as:

[0075]

[0076]

[0077] wherein (0≤k≤N-1), the amplitude corresponds to the period N / k;

[0078] Solve all amplitudes respectively, arrange the amplitudes in descending order, and take the three largest amplitudes to calculate the ACF index;

[0079] For the period N / k, the autocorrelation coefficient is:

[0080]

[0081] wherein, P t is the power of the device at time t, P t-N / k is the power at time t-N / k, is the average power, and the calculation formula is

[0082] For P pro , P env after Fourier transform, take the three largest amplitudes respectively, calculate the autocorrelation coefficients respectively, and then take the maximum as the production cycle and the environmental protection cycle of the production line.

[0083] In this embodiment, step S3 is specifically:

[0084] Let the opening threshold of m production devices of a production line be and the opening threshold of n environmental protection devices be wherein the data length is 1;

[0085] According to the and relationship between the devices under the production line, the data is processed, wherein the production device is taken as an example, and and mean that when all the devices are turned on, the production line is considered to be in a production state, or means that when one device is turned on, the production line is considered to be in a production state;

[0086] The state of the jth production device at time T is The calculation formula is:

[0087]

[0088] The state of the jth environmental protection device at time T is The calculation formula is:

[0089]

[0090] According to the and relationship between the devices, the production time of the production line and the environmental protection device are counted, and the data of the previous production cycle and environmental protection cycle are taken, the production device is taken as the and relationship, and the production opening duration is:

[0091]

[0092] If the production device is an or relationship, the production opening duration is:

[0093]

[0094] If the environmental protection device is or the relationship, the environmental protection opening time is:

[0095]

[0096] If the environmental protection device is and the relationship, the environmental protection opening time is:

[0097]

[0098] After statistics, the production line production opening time C and the production line environmental protection opening time D, then the formula of the environmental protection threshold X is as follows:

[0099]

[0100] In this embodiment, step S4 is specifically:

[0101] For T time, the data of the production equipment and the environmental protection equipment of the enterprise are taken in the previous production cycle and the environmental protection cycle, the power data of m production equipment is The data length is A, the power data of n environmental protection equipment is The data length is B; the opening threshold of m production equipment is The opening threshold of n environmental protection equipment is Wherein the data length is 1;

[0102] The state of the jth production equipment at T time The calculation formula is:

[0103]

[0104] The state of the jth environmental protection equipment at T time The calculation formula is:

[0105]

[0106] According to the production line production time and the environmental protection equipment statistics between the devices and or the relationship, the data of the previous production cycle and the environmental protection cycle are taken, the production equipment is and the relationship, and the production opening time is:

[0107]

[0108] If the production equipment is or the relationship, the production opening time is:

[0109]

[0110] If the environmental protection device is or the relationship, the environmental protection opening time is:

[0111]

[0112] If the environmental protection device is a relationship, the environmental protection opening duration is:

[0113]

[0114] The above only describes the preferred embodiments of the present application, and any changes and modifications made according to the scope of the patent application of the present application shall be within the scope of the present application.

Claims

1. An enterprise production line environmental protection working condition online research method, characterized in that, The method comprises the following steps: Step S1: obtaining time-series active power data of production equipment and environmental protection equipment respectively; Step S2: performing discrete Fourier transform and ACF index calculation on the time-series active power data of the production equipment and the environmental protection equipment to obtain production cycle A and environmental protection cycle B; Step S3: performing traversal statistics on the power data of 30 production cycles and environmental protection cycles respectively, obtaining opening time C of the production equipment and opening time D of the environmental protection equipment according to the and / or relationship of the production equipment in the production line and the and / or relationship of the environmental protection equipment, and calculating environmental protection threshold X; Step S4: for T moment, taking the data of the previous production cycle and environmental protection cycle of the production equipment and the environmental protection equipment of the enterprise respectively, and counting production opening time E and environmental protection opening time F of the production line; Step S5: for T moment, the environmental protection working condition judgment rule of the intermittent production line of the enterprise is that if X*(B-F)≤A-E, it is considered that the environmental protection is normal, otherwise it is considered that the environmental protection is abnormal; The step S2 is specifically: Suppose the power data of m production devices of a production line is The power data of n environmental protection devices is The data length is N. Regarding m production equipment as and relationship and n environmental protection equipment as or relationship, the production power data under the production line is: The environmental protection power data under the production line is: P pro , P env Fourier transform, the frequency of k / N is decomposed into the amplitude: Wherein 0≤k≤N-1, the period corresponding to the amplitude is N / k; All amplitudes are solved respectively, the amplitudes are arranged in descending order, and the three largest amplitudes are taken for ACF index calculation; For the period N / k, the autocorrelation coefficient is: Where P t is the power of the device at time t, P t-N / k is the power at time t-N / k, is the average power, and the calculation formula is For P pro , P env After Fourier transform, take the maximum of 3 respectively, respectively calculate the autocorrelation coefficient, and then take the maximum, as the production cycle, environmental protection cycle; The step S3 is specifically: The opening threshold of m production devices of a production line is The opening threshold of n environmental protection devices is Wherein the data length is 1. According to the and / or relationship between the equipment under the production line, data processing is performed, wherein the production equipment is taken as an example, and and means that when all the equipment is turned on, it is considered that the production line is in a production state, or means that when one of the equipment is turned on, it is considered that the production line is in a production state; The state of the jth production device at time T The calculation formula is: The jth environmental protection equipment state at time T The calculation formula is: According to the and / or relationship between the equipment, production line production time and environmental protection equipment are counted, the data of the previous production cycle and environmental protection cycle are taken, if the production equipment is and relationship, the production opening time is: If the production equipment is or relationship, the production opening time is: If the environmental protection equipment is or relationship, the environmental protection opening time is: If the environmental protection equipment is and relationship, the environmental protection opening time is: After statistics, the production line production opening time C and the production line environmental protection opening time D, the formula of the environmental protection threshold X is as follows:

2. The on-line research method for the environmental protection working condition of an enterprise production line according to claim 1, characterized in that, The step S4 is specifically: For T time, the data of the previous production cycle and environmental protection cycle are taken for the production equipment and environmental protection equipment of the enterprise respectively, the power data of m production equipment is The data length is A, the power data of n environmental protection equipment is The data length is B; the opening threshold of m production equipment is The opening threshold of n environmental protection equipment is Wherein the data length is 1; The jth production equipment state at time T The calculation formula is: The jth environmental protection equipment state at time T The calculation formula is: According to the and / or relationship between the equipment, production line production time and environmental protection equipment are counted, the data of the previous production cycle and environmental protection cycle are taken, if the production equipment is and relationship, the production opening time is: If the production equipment is or relationship, the production opening time is: If the environmental protection equipment is or relationship, the environmental protection opening time is: If the environmental protection equipment is and relationship, the environmental protection opening time is:

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