CN104456836A - Method for controlling orderly power utilization of central air conditioner based on load relation - Google Patents
Method for controlling orderly power utilization of central air conditioner based on load relation Download PDFInfo
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- CN104456836A CN104456836A CN201410608540.8A CN201410608540A CN104456836A CN 104456836 A CN104456836 A CN 104456836A CN 201410608540 A CN201410608540 A CN 201410608540A CN 104456836 A CN104456836 A CN 104456836A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for controlling the orderly power utilization of a central air conditioner based on a load relation. The method comprises the following steps that (1) the sampling frequency and sampling time of an air conditioner load are determined, the sampling frequency is 8 K, and the sampling time is not smaller than 0.05 ms; (2) whether the current load exceeds a set threshold value or not is judged, wherein A, if the current load exceeds the set threshold value, a control mode is determined and comprises flexible control and rigid control, tripping operation is directly carried out if rigid control is adopted, and whether the work state of the air conditioner is cooling or heating is determined if flexible control is adopted; B, if the current load does not exceed the set threshold value, whether the air conditioner is in the load control process or not is judged, and if the air conditioner is in the load control process, switching on is carried out, and the air conditioner is under flexible control to restore the state. The method has the advantages that management and control over the orderly power utilization are achieved on the premise of not influencing the use effect of the air conditioner to the greatest extent, and the method is easier for non-industrial users to accept; meanwhile, in an emergency, when the load needs to be reduced quickly, the mode of carrying out direct tripping operation through rigid control can be adopted.
Description
Technical field
The present invention is a kind of control method of the central air-conditioning ordered electric based on load relation, belongs to distribution and control appliance technical field.
Background technology
Before, effective ordered electric scheme is not also had for non-technical family.And the power consumption of central air-conditioning occupies very large proportion in user's total electricity consumption in this section, when Utilities Electric Co. needs to use electricity in off-peak hours, often simply notify that user is to reduce load in the mode of rationing the power supply.Real-time and accuracy can not be accomplished, bring puzzlement to user simultaneously.
Summary of the invention
What the present invention proposed is a kind of control method of the central air-conditioning ordered electric based on load relation, and its object is intended to the above-mentioned defect overcome existing for prior art, realizes ordered electric fine-grained management.
Technical solution of the present invention: based on the control method of the central air-conditioning ordered electric of load relation, comprise the steps:
(1) sample frequency and the sampling time of air conditioner load is determined; Sample frequency 8K, the sampling time is not less than 0.05ms;
(2) judge whether current loads exceedes and threshold value be set,
A, arranges threshold value if exceed, then determine control mode, and this control mode comprises Flexible Control or rigidity control; Then directly trip according to rigidity control;
Then should determine that air-conditioning work state is refrigeration or heats according to Flexible Control,
1) determine that air-conditioning work state is refrigeration, then first judge current air-conditioner water outlet temperature and the return water temperature temperature difference (return water temperature-leaving water temperature), if the temperature difference is not more than 0, then Flexible Control terminates; If the temperature difference is greater than zero, then the air-conditioner water outlet temperature arranged risen 2 degree, until air conditioner load reaches restriction requirement, or when leaving water temperature is heightened consistent with return water temperature, Flexible Control terminates; Otherwise Flexible Control Period Process performs repeatedly,
2) determine that air-conditioning work state heats, then first judge current air-conditioner water outlet temperature and the return water temperature temperature difference (leaving water temperature-return water temperature), if the temperature difference is not more than 0, then Flexible Control terminates; If the temperature difference is greater than zero, then the air-conditioner water outlet temperature arranged is lowered 2 degree, until air conditioner load reaches restriction requirement, or when leaving water temperature is heightened consistent with return water temperature, Flexible Control terminates; Otherwise Flexible Control Period Process performs repeatedly;
B, does not exceed and arranges threshold value, then should judge whether to be in spatial load forecasting process, if be in spatial load forecasting process, then close a floodgate, juxtaposition Flexible Control returns to form.
Advantage of the present invention: first by and central air-conditioning communications protocol mutual, the load of central air conditioner main machine is reduced for means to regulate air-conditioner water outlet temperature and the return water temperature temperature difference, the Precise control to central air-conditioning can be accomplished, provide a kind of control method realizing ordered electric management under as far as possible not affecting the prerequisite of air-conditioning result of use, non-technical family is more acceptant; Meanwhile, when in case of emergency, need the mode that directly can be tripped by rigidity control when reducing load fast.
Accompanying drawing explanation
Accompanying drawing 1 is the central air-conditioning ordered electric control flow chart based on load relation.
Detailed description of the invention
As shown in Figure 1, a kind of control method of the central air-conditioning ordered electric based on load relation, comprises the steps:
(1) sample frequency and the sampling time of air conditioner load is determined; Sample frequency 8K, the sampling time is not less than 0.05ms;
(2) judge whether current loads exceedes and threshold value be set,
A, arranges threshold value if exceed, then determine control mode, and this control mode comprises Flexible Control or rigidity control; Then directly trip according to rigidity control;
Then should determine that air-conditioning work state is refrigeration or heats according to Flexible Control,
1) determine that air-conditioning work state is refrigeration, then first judge current air-conditioner water outlet temperature and the return water temperature temperature difference (return water temperature-leaving water temperature), if the temperature difference is not more than 0, then Flexible Control terminates; If the temperature difference is greater than zero, then the air-conditioner water outlet temperature arranged is risen 2 degree.Until air conditioner load reaches restriction requirement, or when leaving water temperature is heightened consistent with return water temperature, Flexible Control terminates; Otherwise Flexible Control Period Process performs repeatedly;
2) determine that air-conditioning work state heats, then first judge current air-conditioner water outlet temperature and the return water temperature temperature difference (leaving water temperature-return water temperature), if the temperature difference is not more than 0, then Flexible Control terminates; If the temperature difference is greater than zero, then the air-conditioner water outlet temperature arranged is lowered 1 degree.Until air conditioner load reaches restriction requirement, or when leaving water temperature is heightened consistent with return water temperature, Flexible Control terminates; Otherwise Flexible Control Period Process performs repeatedly;
B, does not exceed and arranges threshold value, then should judge whether to be in spatial load forecasting process, if be in spatial load forecasting process, then close a floodgate, juxtaposition Flexible Control returns to form.
Described rigidity control refers to that directly tripping operation realizes controlling the method for air conditioner load, and Flexible Control refers to by mutual with the communications protocol of air-conditioning, realizes air-conditioning temperature adjustment, reaches the method controlling air conditioner load.
Example
Certain corporate office buildings is equipped with two central air conditioner main machines and is respectively 1#, 2#, two central air-conditioning intelligence detection and control terminals is housed accordingly, carries out Flexible Control to 1#.
9: 51 on the 19th August in 2014 carries out protocol integrated test system (Flexible Control) to No. 1 air-conditioner host, air-conditioning is for refrigeration mode, now leaving water temperature is 7 degree, improve leaving water temperature 2 degree, after control drops into, electric current during 10:00 drops to about 130A by 249.7A, and load declines about 47%.11: 13 timesharing, leaving water temperature is returned to unmodified before; Within 11: 30, current reverts is to about 245A.
16:32 divided and carried out protocol integrated test system (Flexible Control) to No. 1 air-conditioner host on August 19th, 2014, and air-conditioning is for refrigeration mode, and now leaving water temperature is 7 degree, return water temperature is 12 degree, be 12 degree by water outlet temperature setting, 16:41 timesharing current value is close to 0A, and now air-conditioner host is stopped transport; 16:46 divides that to recover coolant-temperature gage be 7 degree, and 16:55 divides current value to return to about 210A.
Reached a conclusion by above example, the method realizing controlling central air-conditioning load by the temperature difference reconciling air-conditioner water outlet temperature and return water temperature is practicable.
Claims (1)
1., based on a control method for the central air-conditioning ordered electric of load relation, it is characterized in that comprising the steps:
(1) sample frequency and the sampling time of air conditioner load is determined; Sample frequency 8K, the sampling time is not less than 0.05ms;
(2) judge whether current loads exceedes and threshold value be set,
A, arranges threshold value if exceed, then determine control mode, and this control mode comprises Flexible Control or rigidity control; Then directly trip according to rigidity control;
Then should determine that air-conditioning work state is refrigeration or heats according to Flexible Control,
1) determine that air-conditioning work state is refrigeration, then first judge current air-conditioner water outlet temperature and the return water temperature temperature difference, i.e. return water temperature-leaving water temperature, if the temperature difference is not more than 0, then Flexible Control terminates; If the temperature difference is greater than zero, then the air-conditioner water outlet temperature arranged risen 2 degree, until air conditioner load reaches restriction requirement, or when leaving water temperature is heightened consistent with return water temperature, Flexible Control terminates; Otherwise Flexible Control Period Process performs repeatedly;
2) determine that air-conditioning work state heats, then first judge current air-conditioner water outlet temperature and the return water temperature temperature difference, i.e. leaving water temperature-return water temperature, if the temperature difference is not more than 0, then Flexible Control terminates; If the temperature difference is greater than zero, then the air-conditioner water outlet temperature arranged is lowered 2 degree, until air conditioner load reaches restriction requirement, or when leaving water temperature is heightened consistent with return water temperature, Flexible Control terminates; Otherwise Flexible Control Period Process performs repeatedly;
B, does not exceed and arranges threshold value, then should judge whether to be in spatial load forecasting process, if be in spatial load forecasting process, then close a floodgate, juxtaposition Flexible Control returns to form.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410608540.8A CN104456836B (en) | 2014-11-04 | 2014-11-04 | Method for controlling orderly power utilization of central air conditioner based on load relation |
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|---|---|---|---|
| CN201410608540.8A CN104456836B (en) | 2014-11-04 | 2014-11-04 | Method for controlling orderly power utilization of central air conditioner based on load relation |
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| CN104456836A true CN104456836A (en) | 2015-03-25 |
| CN104456836B CN104456836B (en) | 2017-04-12 |
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| CN201410608540.8A Active CN104456836B (en) | 2014-11-04 | 2014-11-04 | Method for controlling orderly power utilization of central air conditioner based on load relation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020859A (en) * | 2015-08-04 | 2015-11-04 | 深圳供电局有限公司 | Central air conditioner load reduction temperature regulation method based on equal comfort loss principle |
| CN105135623A (en) * | 2015-09-17 | 2015-12-09 | 国网天津市电力公司 | Central air-conditioner deloading control method capable of meeting power grid peak shaving and user comfort level |
| CN105333581A (en) * | 2015-12-07 | 2016-02-17 | 江苏省电力公司 | Load-relation-based control method for orderly power utility of multi-couple unit central air-conditioner |
| CN105352108A (en) * | 2015-09-29 | 2016-02-24 | 中国电力科学研究院 | Load optimization control method based on air conditioner electricity utilization mode |
| CN114811878A (en) * | 2022-04-08 | 2022-07-29 | 珠海东之尼电子科技有限公司 | Air conditioner temperature control method, air conditioner remote controller and air conditioner |
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| US20050155369A1 (en) * | 2004-01-15 | 2005-07-21 | Toshiba Carrier Corporation | Air conditioner |
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| CN102927657A (en) * | 2012-11-28 | 2013-02-13 | 机械工业第三设计研究院 | Water temperature change control method by air-conditioner temperature change speed method |
| CN103375878A (en) * | 2012-04-26 | 2013-10-30 | 上海宝信软件股份有限公司 | Group control method for central air conditioning refrigerating unit |
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| US20050155369A1 (en) * | 2004-01-15 | 2005-07-21 | Toshiba Carrier Corporation | Air conditioner |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020859A (en) * | 2015-08-04 | 2015-11-04 | 深圳供电局有限公司 | Central air conditioner load reduction temperature regulation method based on equal comfort loss principle |
| CN105135623A (en) * | 2015-09-17 | 2015-12-09 | 国网天津市电力公司 | Central air-conditioner deloading control method capable of meeting power grid peak shaving and user comfort level |
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| CN105352108B (en) * | 2015-09-29 | 2019-03-08 | 中国电力科学研究院 | A kind of load optimal control method based on air conditioning electricity mode |
| CN105333581A (en) * | 2015-12-07 | 2016-02-17 | 江苏省电力公司 | Load-relation-based control method for orderly power utility of multi-couple unit central air-conditioner |
| CN114811878A (en) * | 2022-04-08 | 2022-07-29 | 珠海东之尼电子科技有限公司 | Air conditioner temperature control method, air conditioner remote controller and air conditioner |
| CN114811878B (en) * | 2022-04-08 | 2023-12-26 | 珠海东之尼电子科技有限公司 | Air conditioner temperature control method, air conditioner remote controller and air conditioner |
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| CN104456836B (en) | 2017-04-12 |
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