CN109210380B - Automatic natural gas distribution and transmission method and system - Google Patents
Automatic natural gas distribution and transmission method and system Download PDFInfo
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- 239000003345 natural gas Substances 0.000 title claims abstract description 17
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- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
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Abstract
The invention discloses a natural gas automatic distribution and transmission method and a system, wherein the system comprises a station control machine, a plurality of station control systems (PLC) and a plurality of automatic distribution and transmission hosts so as to correspond to different gas supply areas, and is characterized in that: the station control machine sends the operation parameters input from the operation interface to the station control system PLC; the station control system PLC sends the operation parameters to the automatic distribution and transmission host; after the automatic distribution and transmission host carries out relevant calculation, returning the target value to the station control system PLC; and the station control system PLC controls corresponding valves to carry out gas transmission control.
Description
Technical Field
The invention belongs to the technical field of automatic control and information, and particularly relates to an automatic distribution and transmission technology of a natural gas pipeline.
Background
At present, domestic natural gas pipeline user management goes through three historical stages of field control, station control and central control, the requirement on the automation degree of a station yard is higher and higher as pipeline management enters a centralized regulation and control mode of a regulation and control center, the current pressure/flow control mode occupies a large amount of time and energy of workers, the current management requirement is difficult to adapt, and a set of new technology is necessary to be researched and developed to realize the automation of user management, so that the fine management of each sub-delivery user is achieved.
The existing oil distribution and transportation station adopts manual distribution and transportation modes, namely, a regulation and control center issues daily specified quantity, and an operator manually regulates the daily specified quantity according to the change conditions of downstream pressure and flow so as to meet the gas consumption of downstream users and realize the control of the daily specified quantity; due to the fact that the user generally uses gas in unbalanced conditions in all periods, operators need to keep real-time tracking and monitoring of parameters of the distribution condition at any time, particularly in the peak period and the low-valley period of gas consumption, the operators need to pay close attention to the downstream distribution condition, too much output is generated at the beginning of each day, and the output is frequently adjusted in two hours before handover; or the phenomenon that the natural gas transportation is in shortage when the distribution quantity is too much and the handover is started; it is difficult to ensure that the daily specified gas delivery is completed 100% accurately. This way of delivering has the following disadvantages:
1) in the process of separate transportation, operators are required to monitor the current gas transportation amount and pressure condition, judge the current gas transportation condition manually by experience and continuously adjust the gas transportation condition through manual operation;
2) in order to ensure that the daily gas output is consistent with the daily specified amount in the last period of the transfusion every day, workers need to manually adjust frequently, and the defects of large workload, frequent adjustment and the like occur;
the pressure/flow control has the conditions of low control precision, large pressure fluctuation, large error between the gas transmission amount and the specified daily amount and the like.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a set of complete sub-transmission mechanism, and the wide application of the technology can simplify the daily operation behavior of scheduling and effectively improve the pipeline running level. After each station yard is put into use, the automatic separate delivery function only needs the regulation and control center to input the daily specified delivery volume, and the station yard automatic separate delivery system calculates the daily specified delivery volume of each separate delivery user, so as to automatically complete the separate delivery task of the station yard.
The existing manual sub-transmission mode controls the sub-transmission volume of each time period by manually intervening for several times a day and appointing the gas consumption condition of a downstream user according to the date given by scheduling, and also ensures the peak gas consumption of the user.
In order to solve the problems in the background art, the automatic sub-delivery system adopts two sub-delivery schemes of a comprehensive weight method and a residual time method, and adopts a mode of combining five sub-delivery modes such as a non-compensation mode, a weak compensation mode, a strong compensation mode, an overrun pressure regulation mode, a correction mode and the like, so that the gas utilization curve of a user is predicted in advance according to the daily designated sub-delivery volume given by scheduling, and the length and the inner diameter of a pipeline are integrated to realize sub-delivery control. The method adopts the modes of steady-state error compensation, filtering and the like to ensure that the sub-output is more accurate. The automatic distribution function has the following advantages:
1) the automatic sub-delivery system can automatically complete the sub-delivery task of the specified amount of the station yard day only by setting the specified sub-delivery amount of the day of each day, the upper limit value and the lower limit value of the pressure and the flow;
2) the automatic distribution and transmission process does not need human intervention, so that a large amount of human resources can be saved, the workload of operators is reduced, and the automation control degree of a station yard is improved;
3) in the field distribution process, the system can automatically adjust the pressure and the flow to meet the downstream gas use requirement of a user;
4) the automatic distribution and delivery system can set a gas delivery volume target value of each time period according to the downstream gas utilization condition, meet the peak gas utilization period of each day, and make the distribution and delivery total amount accurately equal to the set total value of the day;
5) the automatic distribution and transmission system analyzes the fluctuation curve of the pressure in real time, judges and processes the fluctuation curve, and adjusts the valve opening degree through a station control system PLC or a pressure regulation control system, so that the pressure curve is more stable;
6) according to the actual conditions of each station, other functions are added, and the special requirements of current limiting, overflowing and the like required in the actual gas transmission process are met.
Drawings
FIG. 1 is a hardware topology structure diagram of a natural gas automatic distribution system;
FIG. 2 is a schematic diagram of a dispense flow setting calculation;
FIG. 3 is a schematic diagram of a left shift curve of the split delivery flow rate;
FIG. 4 is a schematic of pressure limits;
FIG. 5 is a schematic diagram of the system architecture of the automatic dispatch software;
FIG. 6 is a schematic diagram of an automatic dispatch main service architecture;
FIG. 7 is a schematic diagram of the logical structure of an automatic dispatch algorithm;
FIG. 8 is a schematic diagram of a 7-balance flow-through curve;
FIG. 9 is a graph showing the 7-day outbound pressure change curve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The hardware environment of the automatic natural gas distribution and transmission system provided by the embodiment of the invention, as shown in fig. 1, includes: the system comprises an operator workstation, a station control system PLC, an RMG pressure regulating control system, an automatic distribution system and the like. Wherein, a station control machine is connected with N station control system PLC and N automatic distribution and transmission host machines (built-in automatic distribution and transmission systems) below to correspond to different gas supply areas.
Specifically, in the present embodiment, 1 additional porphyry embedded automatic distribution host UNO-2174A is adopted as the core of the automatic distribution system, the automatic distribution core algorithm and the required communication function are implemented in the automatic distribution host, the operation interface of the automatic distribution system is implemented in the iFIX software still in the original station control machine, the station control machine issues the relevant parameters of automatic distribution (including daily specified quantity, flow pressure limit value, and distribution mode) to the station control system PLC, the station control system PLC forwards the relevant parameters to the automatic distribution software automatic distribution host in the Modbus485 or ModbusTCP communication mode, the automatic distribution software receives the automatic distribution command from the station control machine, completes the corresponding calculation and compensation of the system, and sends the final control target (i.e., flow and pressure set values) to the station control system PLC, and the station control system PLC or the pressure regulation controller completes the final valve control work.
The system comprises a station control machine, a station control system PLC, a data acquisition and processing system, a data processing system and a data processing system, wherein an operator inputs information such as daily specified quantity, flow pressure limit value and the like through an operation interface of the station control machine, the information is transmitted to the station control system PLC, the station control system PLC transmits the information to the automatic distribution and transmission host machine, the automatic distribution and transmission host machine performs relevant calculation and then returns a target value to the station control system PLC, the station control system PLC controls corresponding valves, the hardware is the station control.
The UNO-2174A embedded automatic distribution host has strong performance, can realize a complex and flexible algorithm to meet the actual distribution requirement, has a single database, can store the distribution data for a long time, and is used for calculation and historical query.
One of the automatic natural gas distribution and transmission methods provided by the embodiment of the invention is a comprehensive weight distribution and transmission method.
The comprehensive weight method is to calculate the weight x of each time period of the day according to the weight values of the daily gas consumption of downstream users in different time periods in the past time period (generally 1 week)iAnd the gas transmission set value of each time interval is used as a target value to carry out automatic distribution transmission. In the normal automatic distribution process, the comprehensive weight method takes flow control as a main part and pressure compensation as an auxiliary part, and specially sets pressure and flow high-low limit protection measures. The method specifically comprises the following steps:
A) calculation of set value of delivery flow
Referring to fig. 2, each day is divided into 1440 time periods, and the weight x of each time period of the day is calculated according to the gas transmission amount calculated in the past 7 daysiThen, the gas delivery set value of each time period on the day can be calculated as follows:
wherein Q ismThe accumulated gas output per minute for the last seven days, QwtThe gas delivery set point for each time period of the day.
B) Calculating the daily gas transmission curve f (t)
Referring to fig. 3, a daily gas transmission curve f (t) is calculated according to the average gas transmission rate calculated in the past 7 days and the specified gas transmission rate of the day, and then the curve is shifted to the left by a time interval Δ t (Δ t is the response time of the flow regulating system, about 10 min), so that a final curve f' (t) is obtained and sent to the station control system PLC as the current flow rate setting of the day.
The daily gas delivery curve f formula:
wherein Q iswtSet values for gas delivery for each time period of the day, XwtIs a weight value.
C) Pressure protection and pressure compensation
In the integrated weight method mode, the automatic distribution and delivery system is usually in a flow regulation mode, but in order to ensure the safety and pressure stability of gas delivery, pressure protection measures and pressure compensation are required to be added.
C-1 description of pressure limits
Determining a normal range (P) of the outlet pressure on the basis of the actual gas deliverylow，Phigh) During the automatic distribution and delivery process, the delivery pressure is kept within the range as much as possible and is kept relatively stable.
In addition, according to design requirements and station gas transmission conditions, maximum and minimum pressure limit values P allowed by separate transmission exist in the outbound pressuremaxAnd PminDuring normal gas delivery, the outbound pressure is not allowed to exceed this pressure range (P)max，Pmin)。
These 4 limit relationships are: pmin≤Plow<Phigh≤PmaxSee fig. 4.
C-2. pressure protection
In the flow regulation mode, upper and lower limits P of the sub-delivery pressure are set according to design requirements and station gas delivery conditionsmaxAnd PminWithin the limit value range, the system performs normal flow regulation, and when the pressure reaches an upper limit value PmaxWhen the pressure is recovered to the normal range, the system is switched to pressure regulation and then to flow regulation. The function is already provided in the RMG pressure regulating controller, the automatic distribution and transmission system does not need to be repeatedly arranged, and only the pressure exceeds the upper limit value PmaxSetting the flow set value of the automatic distribution transmission system as a maximum target flow value FmaxThe given value of pressure is set to PhighAfter the pressure returns to the normal range (P)low，Phigh) And then switching to normal flow regulation. The same applies to the lower pressure limit.
C-3. pressure compensation
In the flow regulation mode, the given gas transmission capacity and the downstream gas consumption cannot be completely the same, and particularly, gas transmission pressure fluctuation cannot be avoided under the condition that the gas consumption of a user changes frequently, and pressure compensation is required to be added to avoid or weaken the pressure fluctuation. The method is specifically as follows:
c-3-1. pressure variation compensation
And multiplying the pressure change value delta P by a coefficient k, superposing the pressure change value delta P to a flow set value, sending the flow set value to a station control system PLC for flow control, wherein the updating period is not more than 1/10 (tentatively set for 10s) of the typical pressure fluctuation period, and paying attention to the fact that the coefficient k is small and the pressure change compensation is weak compensation, and the aim is to compensate frequent and tiny fluctuation of the gas transmission pressure.
Qset＝Qset0+Pcom1
Wherein Q issetFlow rate set point, Qset0For the current time period input quantity set value, Pcom1The pressure is a weak compensation value.
Pcom1＝Kp1(Pf1-Pf)+0.5Kp1(Pf2-Pf1) In which P iscom1For weak compensation of pressure, Kp1For a weak compensation coefficient of pressure, PfFor the current outbound pressure, Pf1For the first 1 outbound pressure, Pf2The pressure of the first 2 outbound pressure, k is in the range of 0-40000.
C-3-1. pressure overrun compensation
When the sub-delivery pressure P is in the normal gas delivery pressure range (P)low，Phigh) In the meantime, normal flow regulation is adopted; when the sub-delivery pressure P exceeds the normal gas delivery pressure range (P)low，Phigh) But in (P)max,Pmin) When in range, the system takes a strong compensation. The strong compensation mode is relatively weak compensation, and when the pressure is too high or too low, the adjustment amount is increased in order to pull the gas delivery pressure back to the normal region (P) as much as possiblelow，Phigh). The compensation method is tof-Phigh) Or (P)f-Plow) And performing PID operation, superposing the PID operation on a flow set value, and sending the flow set value to a station control system PLC for flow control, wherein the updating period is not more than 1/10 (tentatively set 10s) of the typical pressure fluctuation period.
D) Flow regulation
D-1. current flow and pressure set values
Based on knowledge of RMG voltage-regulating controllersThe principle is that the pressure PID and the flow PID are output in low selection, under the mode of the comprehensive weight method, the automatic distribution system is usually in the flow regulation mode, the flow set value is the current flow set value calculated according to the previous method, and the pressure set value is the upper pressure limit Phigh. When the pressure P exceeds (P)low，Phigh) After the range, a pressure compensation or pressure regulation mode is used.
D-2. System control period
As the industrial computer is adopted, the performance of the system can completely meet the real-time control of the system, but the control period of the system is not too small considering the service life of the regulating valve, so that the valve frequently acts.
The automatic sub-transmission control cycle can be made into a deformable mode, the automatic sub-transmission deviation value is comprehensively evaluated in each time period, if the deviation index is not large, the control frequency can be reduced, if the deviation index is large, the control frequency can be improved, and the minimum control cycle is not less than 1min under the common condition.
D-3. last period adjustment
To avoid that the actual delivery volume on the day does not reach the specified delivery volume on the day, the last period of the day is defined as the flow regulation period during which the delivery pressure is (P) as long as it ismin，Pmax) And if the gas volume is less than the preset value, the automatic gas distribution and transmission system only performs simple flow regulation without any compensation measures, and accelerates the regulation period until the daily gas transmission is finished.
The second method for automatically distributing and transporting natural gas provided by the embodiment of the invention is a residual time method distribution and transportation method.
And (3) starting to regulate on the same day at 8:00, then carrying out specified pressure stabilizing regulation, simultaneously calculating the distributed output, and entering a flow regulation mode when the distributed output reaches X% of the fraction total amount specified by the center or reaches a specified distribution time limit T of the center.
After entering a flow regulation mode, distributing the target value of the residual gas transmission quantity to the residual time intervals according to different weights, wherein the weight value of each time interval is obtained by analyzing and calculating the gas transmission data of the last 7 days, and the detailed process is shown in a comprehensive weight method scheme. And after each time interval passes, distributing the residual gas transmission amount to the residual time intervals again according to the weight until the gas transmission work of all the time intervals in the day is completed. It should be noted that at the beginning of each period, the time for switching from the current flow rate to the target flow rate in the current period is long (up to about 10 minutes), so the difference value during switching cannot be ignored, and measures need to be taken to compensate the difference value to the target gas transmission rate in the period. In addition, during the flow regulation mode of the residual time method, compensation protection measures such as pressure compensation, overrun protection and set value slope limitation are also adopted, and the specific method is the same as the scheme of the comprehensive weight method.
As shown in fig. 5, the automatic natural gas distribution method according to the present invention may be implemented as computer-executable software and stored in a computer-readable storage medium in the form of a computer program. Fig. 5 is a system configuration diagram of the automatic distribution software. The automatic distribution software mainly comprises a distribution setting module and a service module, wherein the distribution setting module mainly comprises a distribution user setting module, a service management module, a database management module and a system setting module. The automatic output division is divided into an output division setting part and an output division calculating part, the output division calculating part is a service module, configuration information is read into a service calculating function in the output division service module, and then a calculating result is finally input into the regulating valve to realize control in a communication mode.
Fig. 6 is a schematic structural diagram of an automatic dispatch core service module (i.e., an automatic dispatch main service module). FIG. 7 is a schematic diagram of the logic structure of the automatic dispatch algorithm.
In the test process of Shaanjing line small benzyl group transmission station, the invention performs the following function test: and (3) testing software stability: testing the stability of software communication capacity, testing software fault-tolerant capacity, testing the performance of software running for a long time, testing a heartbeat detection communication function and testing a system log function; and (3) testing the software functionality: the method comprises the steps of starting and stopping function test of an automatic transmission distribution program, specified volume writing and modification function test, maximum and minimum pressure limit protection function test, maximum and minimum flow limit protection function test, scheme switching function test and abnormal value processing function test, and 7-24-hour function test of program operation is carried out. Through program tests for more than half a year, the automatic distribution program is proved to be capable of well completing control of daily distribution and delivery amount, and simultaneously, the automatic distribution program can play a good role in protecting when the pressure flow reaches a limit value.
The main technical and economic assessment indexes of the automatic transmission distribution program are analyzed as follows:
1. the safe, stable and efficient completion of the sub-transmission task is ensured, the error rate of automatic sub-transmission and daily designation (within a reasonable range) is within +/-1%, when the designated amount is too large, the task requirement cannot be completed under the condition of whole-course high-pressure gas transmission, and the following table 1-1 shows the comparison condition of the daily designated amount and the actual sub-transmission amount of the newly-added branch of the quiet sea of the Shaanjing line small Jianzhuang sub-transmission station for seven consecutive days; see the following tables 1-2 for comparison of the daily specified amount of the Xiqing branch of Shaanjing Xiaobenzhuang infusion station and the actual infusion amount for seven consecutive days;
TABLE 1-1
Tables 1 to 2
2. The historical data is saved, and the data to be transmitted of more than 10 users per day in one month can be saved, so that the data can be analyzed from the historical trend, and the data to be transmitted is optimized;
3. the flexibility of automatic distribution and transmission configuration can flexibly configure various parameters influencing distribution and transmission, and comprises the following steps: pressure limit, flow limit, regulator controller delay time set point, calibration mode, flow set point dead band, pressure determination dead band, pressure override, pressure stabilization set increment, and the like.
4. The newly added automatic sub-transmission program can realize the operation function of over 80 percent of the original sub-transmission, as shown in the following table 2:
| function(s) | Before use | After being used |
| Daily specified volume write | Is provided with | Is provided with |
| Flow control | Is provided with | Is provided with |
| Pressure control | Is provided with | Is provided with |
| Upper pressure limit protection | Is provided with | Is provided with |
| Lower pressure limit protection | Is provided with | Is provided with |
| Upper limit protection of flow | Is provided with | Is provided with |
| Lower limit protection for flow | Is provided with | Is provided with |
TABLE 2
5. And (5) summarizing the actual transfusion dividing situation of the newly added direction of the small benzender and the quiet sea. Referring to figures 8 and 9 of the drawings,
and (4) analyzing results:
1) the automatic sub-delivery effect of the newly added directions in the quiet sea is good overall, and the error between the actual output and the daily specified sub-output is small;
2) when the specified amount is much larger than the user demand, the system cannot be forcibly conveyed; when the specified amount is smaller than the user demand, the daily output can be effectively limited to reach the daily specified amount required by the center;
3) in the automatic distribution and transportation process, the pressure fluctuation of the outlet in the newly increased direction of the static sea is relatively stable and small.
The analysis reason is as follows:
1) the main reasons are that the volume of the pipe in the newly increased direction of the static sea is larger, the distance between the small benzyl branch transmission station and the downstream static sea station is 9.7km, and the pipe diameter is DN 400.
2) In addition, the valve controller of the user has fast response, the response time is about 30s, and the steady state error is also 200m3Within/h, the flow pressure control is more accurate.
And (4) conclusion:
1) the automatic gas distribution and delivery system can meet the automatic gas distribution and delivery requirements, can effectively adjust the gas delivery amount, and meets the requirements of stable pressure and small error between the gas delivery amount and the specified daily amount.
2) The automatic distribution and transmission can obviously reduce the manual adjustment times of the center to each user, the continuous 7 balances in the static sea with the new direction have the adjustment times of the specified amount to the day of the center for at most 1 time every day, and the users are recommended to use the automatic distribution and transmission system.
3) And for the condition that the daily specified gas transmission amount is far larger than the downstream demand, the gas transmission error can be improved only by adjusting the daily specified amount through the regulation center, and if the regulation times of the regulation center are 3-4 times every day, the gas transmission error can be ensured to be within plus or minus 1%.
6. Evaluation of industrial application prospect
The automatic distribution and transportation technology can accurately control the downstream natural gas distribution and transportation amount, and can perfectly realize the distribution and transportation target compared with the traditional manual distribution and transportation control; at present, the main natural gas pipelines in the whole country have the conditions for realizing automatic distribution and transportation, and the pipelines adopt manual control to distribute and transport the specified amount of the day of the user so far, so that the automatic distribution and transportation technology has very wide application prospect.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification or replacement within the technical scope of the present invention disclosed by the person skilled in the art without any inventive work is included in the scope of the present invention. Therefore, the protection scope of the present invention is subject to the scope of the claims.
Claims (10)
1. The utility model provides a natural gas automatic distribution method for natural gas automatic distribution system, this system includes station accuse machine, a plurality of station accuse system PLC and a plurality of automatic distribution host computer in order to correspond different gas supply regions which characterized in that:
1) an operator inputs operation parameters through an operation interface of the station control machine, wherein the operation parameters comprise: daily specified volume, flow pressure limit and distribution mode; the operation parameters are sent to a station control system PLC;
2) the station control system PLC sends the operation parameters to the automatic distribution and transmission host;
3) after the automatic distribution and transmission host carries out relevant calculation, returning the target value to the station control system PLC; the target values are flow and pressure set values; the calculation method comprises a comprehensive weight method, wherein the comprehensive weight method comprises the following steps: calculating weight x of each time interval in the day, calculating a distribution flow set value, calculating a pressure limit value and calculating a pressure compensation value, wherein the distribution flow set value is calculated by the following method:
a. calculating a gas transmission set value of each time period on the day according to the weight of each time period on the day;
b. calculating a current day gas transmission curve;
c. the curve is shifted to the left for a period of time, and the final curve is obtained and is sent to the station control system PLC as the flow given on the day; 4) and the station control system PLC controls corresponding valves to carry out gas transmission control.
2. The method of claim 1, the method of calculating further comprising a time remaining method.
3. The method of claim 1, wherein the pressure compensation values include a pressure change compensation value and a pressure overrun compensation value.
4. An automatic natural gas distribution and transportation system, which applies the automatic natural gas distribution and transportation method according to any one of claims 1 to 3, and comprises a station control machine, a plurality of station control system PLCs and a plurality of automatic distribution and transportation hosts so as to correspond to different gas supply areas, wherein: the station control machine sends the operation parameters input from the operation interface to the station control system PLC; the station control system PLC sends the operation parameters to the automatic distribution and transmission host; after the automatic distribution and transmission host carries out relevant calculation, returning the target value to the station control system PLC; and the station control system PLC controls corresponding valves to carry out gas transmission control.
5. The system of claim 4, the operating parameters comprising: daily specified volume, flow pressure limit and dispensing mode.
6. The system of claim 4, wherein the target value is a flow, pressure set point.
7. The system of claim 4, wherein the method of calculating is a composite weight method or a time remaining method.
8. The system of claim 4, wherein the synthetic weightage method comprises: and calculating the weight x of each time interval in the day, calculating a set value of the sub-transmission flow, calculating a pressure limit value and calculating a pressure compensation value.
9. The system of claim 8, wherein the pressure compensation value comprises a pressure change compensation value and a pressure overrun compensation value.
10. The system of claim 8, wherein the set point for the split flow is calculated by:
a. calculating a gas transmission set value of each time period on the day according to the weight of each time period on the day;
b. calculating a current day gas transmission curve;
c. and shifting the curve to the left for a period of time to obtain a final curve which is used as the current flow of the current day and sent to the station control system PLC.
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| CN110425683A (en) * | 2019-08-16 | 2019-11-08 | 苏州瑞达通机电科技有限公司 | Processing procedure emission control and static pressure transmission diversity weighting control method |
| CN111306445B (en) * | 2020-02-27 | 2021-11-05 | 北京龙鼎源科技股份有限公司 | Method and device for automatically distributing and transmitting energy |
| CN111306444A (en) * | 2020-02-27 | 2020-06-19 | 北京龙鼎源科技股份有限公司 | Method and device for separate transmission of energy |
| CN112363446B (en) * | 2020-11-03 | 2022-03-01 | 中国石油天然气股份有限公司 | One-key control device and method for co-construction station mutual-conversion process flow |
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| CN113944878B (en) * | 2021-11-04 | 2024-05-28 | 国家石油天然气管网集团有限公司 | Intelligent control method for natural gas separate-transmission station |
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| CN114863649A (en) * | 2022-07-08 | 2022-08-05 | 西南石油大学 | Data management system, storage method and device for natural gas big data analysis |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2772881B1 (en) * | 1997-12-24 | 2000-01-14 | Alpes Systeme Automation | DEVICE FOR DISTRIBUTING A WORKING GAS AND INSTALLATION FOR PROVIDING A WORKING GAS EQUIPPED WITH SUCH A DEVICE |
| CN102313134B (en) * | 2011-04-02 | 2012-11-14 | 成都盛特石油装备模拟技术开发有限公司 | Oil and gas storage and transportation process flow simulating system and method |
| CN102314784B (en) * | 2011-04-02 | 2013-02-13 | 成都盛特石油装备模拟技术开发有限公司 | System and method for simulating natural gas pressurization and distribution for oil and gas storage and transportation |
| CN103115243B (en) * | 2013-02-05 | 2015-01-21 | 中国石油天然气股份有限公司 | Control equipment and control method of natural gas pipeline dispatching electric control valve |
| CN203644191U (en) * | 2013-11-05 | 2014-06-11 | 肇庆新奥燃气有限公司 | Gas data acquisition and monitoring device based on SCADA (supervisory control and data acquisition) system |
| CN205318199U (en) * | 2015-12-17 | 2016-06-15 | 天保中天科技（天津）有限公司 | Divide defeated station control room |
| CN205372078U (en) * | 2016-01-14 | 2016-07-06 | 汪波 | A partial pressure system that is used for natural gas to divide defeated station |
| CN106122763A (en) * | 2016-08-04 | 2016-11-16 | 成都国光电子仪表有限责任公司 | Natural gas distribution station intelligent control system |
| CN106764446B (en) * | 2016-12-23 | 2019-07-02 | 王树祺 | Natural gas line dispatching electric adjusts valve control system and its method |
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