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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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004378 air conditioning Methods 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
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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
- F24F2110/00—Control inputs relating to air properties
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- 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
本发明是一种基于负荷关系的中央空调有序用电的控制方法，包括如下步骤：（1）确定空调负荷的采样频率和采样时间；采样频率8K，采样时间不低于0.05ms；（2）判断当前负荷是否超过设置阈值，包括A，若超过设置阈值，则确定控制方式，该控制方式包括柔性控制还是刚性控制；若采用刚性控制则直接跳闸；若采用柔性控制则应确定空调工作状态是制冷还是制热，B，未超过设置阈值，则应判断是否处于负荷控制过程中，若处于负荷控制过程中，则合闸，并置柔性控制恢复状态。优点：在尽量不影响空调使用效果的前提下实现有序用电管理的控制，非工业用户更容易接受；同时，当在紧急情况下，需要快速降低负荷时可以通过刚性控制直接跳闸的方式。
The present invention is a method for controlling orderly electricity consumption of central air-conditioning based on load relationship, comprising the following steps: (1) determining the sampling frequency and sampling time of the air-conditioning load; the sampling frequency is 8K, and the sampling time is not less than 0.05ms; (2 ) to determine whether the current load exceeds the set threshold, including A, and if it exceeds the set threshold, then determine the control mode, which includes flexible control or rigid control; if rigid control is used, it will trip directly; if flexible control is used, the working state of the air conditioner should be determined Whether it is cooling or heating, B, if it does not exceed the set threshold, it should be judged whether it is in the process of load control, if it is in the process of load control, then close the switch, and set the flexible control recovery state. Advantages: Realize the control of orderly power consumption management without affecting the use effect of the air conditioner as much as possible, which is easier for non-industrial users to accept; at the same time, when the load needs to be quickly reduced in an emergency, it can be directly tripped through rigid control.
Description
技术领域 technical field
本发明是一种基于负荷关系的中央空调有序用电的控制方法，属于配电和控制设备技术领域。 The invention relates to a control method for orderly power consumption of a central air conditioner based on load relationship, and belongs to the technical field of power distribution and control equipment.
背景技术 Background technique
之前，针对非工业用户还没有有效的有序用电方案。而中央空调的用电量在这部分用户总用电量中占有很大比重，每当电力公司需要错峰用电时，往往会简单以限电的方式通知用户来降低负荷。不能做到实时性和精确性，同时给用户带来了困扰。 Previously, there was no effective orderly electricity consumption scheme for non-industrial users. The power consumption of central air-conditioning accounts for a large proportion of the total power consumption of these users. Whenever the power company needs to use electricity at off-peak times, it will often simply notify the users by means of power rationing to reduce the load. Real-time and accuracy cannot be achieved, and users are troubled at the same time.
发明内容 Contents of the invention
本发明提出的是一种基于负荷关系的中央空调有序用电的控制方法，其目的旨在克服现有技术所存在的上述缺陷，实现有序用电精细化管理。 The present invention proposes a load-relation-based control method for orderly power consumption of a central air conditioner, which aims to overcome the above-mentioned defects in the prior art and realize refined management of orderly power consumption.
本发明的技术解决方案：基于负荷关系的中央空调有序用电的控制方法，包括如下步骤： The technical solution of the present invention: the control method of the central air-conditioning orderly electricity consumption based on the load relationship, comprising the following steps:
（1）确定空调负荷的采样频率和采样时间；采样频率8K，采样时间不低于0.05ms； (1) Determine the sampling frequency and sampling time of the air-conditioning load; the sampling frequency is 8K, and the sampling time is not less than 0.05ms;
（2）判断当前负荷是否超过设置阈值， (2) Determine whether the current load exceeds the set threshold,
A，若超过设置阈值，则确定控制方式，该控制方式包括柔性控制还是刚性控制；若采用刚性控制则直接跳闸； A. If it exceeds the set threshold, determine the control mode, which includes flexible control or rigid control; if rigid control is used, it will trip directly;
若采用柔性控制则应确定空调工作状态是制冷还是制热， If flexible control is used, it should be determined whether the working state of the air conditioner is cooling or heating.
1）确定空调工作状态是制冷，则首先判断当前空调出水温度和回水温度温差（回水温度-出水温度），若温差不大于0，则柔性控制结束；若温差大于零，则将设置的空调出水温度上升2度，直到空调负荷达到限定要求，或者出水温度调高到和回水温度一致时，柔性控制结束；反之，柔性控制过程周期性反复执行， 1) If the working state of the air conditioner is determined to be cooling, first judge the temperature difference between the current outlet water temperature and the return water temperature of the air conditioner (return water temperature - outlet water temperature). If the temperature difference is not greater than 0, the flexible control ends; if the temperature difference is greater than zero, the set The outlet water temperature of the air conditioner rises by 2 degrees until the air conditioner load reaches the limit requirement, or when the outlet water temperature is adjusted to be consistent with the return water temperature, the flexible control ends; otherwise, the flexible control process is executed periodically,
2）确定空调工作状态是制热，则首先判断当前空调出水温度和回水温度温差（出水温度-回水温度），若温差不大于0，则柔性控制结束；若温差大于零，则将设置的空调出水温度下调2度，直到空调负荷达到限定要求，或者出水温度调高到和回水温度一致时，柔性控制结束；反之，柔性控制过程周期性反复执行； 2) If the working state of the air conditioner is determined to be heating, first judge the temperature difference between the current outlet water temperature and the return water temperature of the air conditioner (outlet water temperature - return water temperature), if the temperature difference is not greater than 0, then the flexible control ends; if the temperature difference is greater than zero, then set The outlet water temperature of the air conditioner is lowered by 2 degrees until the air conditioner load reaches the limit requirement, or when the outlet water temperature is raised to be consistent with the return water temperature, the flexible control ends; otherwise, the flexible control process is executed repeatedly periodically;
B，未超过设置阈值，则应判断是否处于负荷控制过程中，若处于负荷控制过程中，则合闸，并置柔性控制恢复状态。 B. If it does not exceed the set threshold, it should be judged whether it is in the process of load control. If it is in the process of load control, then close the switch and put it in the flexible control recovery state.
本发明的优点：首先通过和中央空调通讯协议的交互，以调节空调出水温度和回水温度温差为手段来降低中央空调主机的负荷，能够做到对中央空调的精细化控制，提供了一种在尽量不影响空调使用效果的前提下实现有序用电管理的控制方法，非工业用户更容易接受；同时，当在紧急情况下，需要快速降低负荷时可以通过刚性控制直接跳闸的方式。 The advantages of the present invention are: firstly, by interacting with the communication protocol of the central air conditioner, the load of the main unit of the central air conditioner can be reduced by means of adjusting the temperature difference between the outlet water temperature and the return water temperature of the air conditioner, and the fine control of the central air conditioner can be achieved, providing a Non-industrial users are more likely to accept the control method of orderly power consumption management without affecting the use effect of the air conditioner as much as possible; at the same time, when the load needs to be quickly reduced in an emergency, it can be directly tripped through rigid control.
附图说明 Description of drawings
附图1是基于负荷关系的中央空调有序用电控制流程图。 Accompanying drawing 1 is the flow chart of orderly power consumption control of central air conditioner based on load relationship.
具体实施方式 Detailed ways
如附图1所示，一种基于负荷关系的中央空调有序用电的控制方法，包括如下步骤： As shown in Figure 1, a control method for orderly power consumption of a central air conditioner based on a load relationship includes the following steps:
（1）确定空调负荷的采样频率和采样时间；采样频率8K，采样时间不低于0.05ms； (1) Determine the sampling frequency and sampling time of the air-conditioning load; the sampling frequency is 8K, and the sampling time is not less than 0.05ms;
（2）判断当前负荷是否超过设置阈值， (2) Determine whether the current load exceeds the set threshold,
A，若超过设置阈值，则确定控制方式，该控制方式包括柔性控制还是刚性控制；若采用刚性控制则直接跳闸； A. If it exceeds the set threshold, determine the control mode, which includes flexible control or rigid control; if rigid control is used, it will trip directly;
若采用柔性控制则应确定空调工作状态是制冷还是制热， If flexible control is used, it should be determined whether the working state of the air conditioner is cooling or heating.
1）确定空调工作状态是制冷，则首先判断当前空调出水温度和回水温度温差（回水温度-出水温度），若温差不大于0，则柔性控制结束；若温差大于零，则将设置的空调出水温度上升2度。直到空调负荷达到限定要求，或者出水温度调高到和回水温度一致时，柔性控制结束；反之，柔性控制过程周期性反复执行； 1) If the working state of the air conditioner is determined to be cooling, first judge the temperature difference between the current outlet water temperature and the return water temperature of the air conditioner (return water temperature - outlet water temperature). If the temperature difference is not greater than 0, the flexible control ends; if the temperature difference is greater than zero, the set The temperature of the water outlet of the air conditioner rises by 2 degrees. Until the air-conditioning load reaches the limit requirement, or when the outlet water temperature is adjusted to be consistent with the return water temperature, the flexible control ends; otherwise, the flexible control process is executed repeatedly periodically;
2）确定空调工作状态是制热，则首先判断当前空调出水温度和回水温度温差（出水温度-回水温度），若温差不大于0，则柔性控制结束；若温差大于零，则将设置的空调出水温度下调1度。直到空调负荷达到限定要求，或者出水温度调高到和回水温度一致时，柔性控制结束；反之，柔性控制过程周期性反复执行； 2) If the working state of the air conditioner is determined to be heating, first judge the temperature difference between the current outlet water temperature and the return water temperature of the air conditioner (outlet water temperature - return water temperature), if the temperature difference is not greater than 0, then the flexible control ends; if the temperature difference is greater than zero, then set The outlet water temperature of the air conditioner is lowered by 1 degree. Until the air-conditioning load reaches the limit requirement, or when the outlet water temperature is adjusted to be consistent with the return water temperature, the flexible control ends; otherwise, the flexible control process is executed repeatedly periodically;
B，未超过设置阈值，则应判断是否处于负荷控制过程中，若处于负荷控制过程中，则合闸，并置柔性控制恢复状态。 B. If it does not exceed the set threshold, it should be judged whether it is in the process of load control. If it is in the process of load control, then close the switch and put it in the flexible control recovery state.
所述刚性控制是指直接跳闸实现控制空调负荷的方法，柔性控制是指通过和空调的通讯协议交互，实现空调调温，达到控制空调负荷的方法。 The rigid control refers to the method of directly tripping to control the load of the air conditioner, and the flexible control refers to the method of interacting with the communication protocol of the air conditioner to realize the temperature adjustment of the air conditioner to control the load of the air conditioner.
实例 example
某公司办公大楼装有两个中央空调主机分别为1#、2#，相应的装有两个中央空调智能测控终端，对1#进行柔性控制。 A company's office building is equipped with two central air-conditioning hosts, 1# and 2#, respectively, and two central air-conditioning intelligent measurement and control terminals are correspondingly installed to flexibly control 1#.
2014年8月19日 9点51分对1号空调主机进行协议控制（柔性控制），空调出于制冷模式，此时出水温度为7度，提高出水温度2度，在控制投入后，10:00时的电流已经由249.7A下降到130A左右，负荷下降47%左右。11点13分时，将出水温度恢复到未修改前；11点30分电流回复到245A左右。 At 9:51 on August 19, 2014, protocol control (flexible control) was performed on the No. 1 air conditioner main unit. The air conditioner was in cooling mode. At this time, the outlet water temperature was 7 degrees, and the outlet water temperature was increased by 2 degrees. At 00 o'clock, the current has dropped from 249.7A to about 130A, and the load has dropped by about 47%. At 11:13, restore the outlet water temperature to that before modification; at 11:30, the current returns to about 245A.
2014年8月19日16：32分对1号空调主机进行协议控制（柔性控制），空调出于制冷模式，此时出水温度为7度，回水温度为12度，将出水温度设定为12度，16:41分时电流值接近为0A,此时空调主机停运；16:46分恢复出水温度为7度，16：55分电流值恢复到210A左右。 At 16:32 on August 19, 2014, protocol control (flexible control) was performed on the No. 1 air conditioner main unit. The air conditioner was in cooling mode. At this time, the outlet water temperature was 7 degrees, and the return water temperature was 12 degrees. At 12 degrees, the current value was close to 0A at 16:41, and the main engine of the air conditioner was shut down at this time; the outlet water temperature was restored to 7 degrees at 16:46, and the current value returned to about 210A at 16:55.
通过以上事例得出结论，通过调解空调出水温度和回水温度的温度差来实现控制中央空调负荷的方法是切实可行的。 From the above examples, it can be concluded that it is feasible to control the central air-conditioning load by adjusting the temperature difference between the air-conditioning outlet water temperature and the return water temperature.
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| 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 |
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