CN208092112U - A kind of non-intruding measuring equipment of the distributed installation of sampling identification - Google Patents

Abstract

The utility model discloses a non-invasive measurement device for sampling and identification distributed installation, which comprises an identification host and an acquisition unit communicating with the identification host. The acquisition unit includes a current sensor for collecting the There are multiple voltage sensors for collecting the voltages of the phases of the power grid. There are multiple current sensors, and each current sensor corresponds to collecting the total current of a user; C three-phase and zero-phase home voltages; the identification host identifies the power consumption and working status of the electric load according to the total home current output by the current sensor and the home voltage of each phase output by the voltage sensor. The utility model does not intrude into residents' houses for construction at all, and even can not interrupt the user's power supply, does not cause the user's resistance, and is easy to be accepted by the user.

Description

A non-invasive measurement device for sampling and identification distributed installation

technical field

The utility model relates to a non-invasive measuring device for sampling and identifying distributed installation, which belongs to the technical field of power grid monitoring.

Background technique

Non-intrusive measurement is an important technical development direction of current load measurement, which is of great significance to power grid companies, residential users, and government departments. As a value-added service business, power companies push sub-item power consumption information, power consumption behavior sequences and improvement strategies to users, so that users can reasonably arrange the opening time of electrical appliances, respond to tiered electricity prices to reduce electricity expenses, and improve power supply satisfaction and marketing stickiness; The decomposition results help the power company to accurately understand the user's power load composition, and provide more accurate basic data for electricity sales forecast and system planning;

The fine collection of internal electrical equipment of residential users is the basis for energy efficiency analysis and energy consumption guidance of residential users, which is of great significance to promote energy saving and demand response of residents. The traditional method mainly relies on intrusive measurement devices, which require a large number of detection equipment and communication lines to be installed inside the user grid. For example, electrical quantity acquisition sensors and communication interfaces are installed on each branch circuit to be monitored. Current, voltage and other information to judge and identify the power consumption and working status of each or each type of electrical appliances in the house, which will consume a lot of manpower and material resources to purchase, install and maintain these devices, but the benefits that can be obtained for residential users very limited.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a non-invasive measurement device for sampling and identification distributed installation, and solve the problem of difficult installation and transformation and high investment cost in the prior art when sampling and identification adopts intrusive installation. technical problem.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a non-intrusive measurement device for sampling and identification distributed installation, including an identification host and an acquisition unit connected to the identification host in communication. The collected electrical signal is used to identify the power consumption and working status of the electric load. The collection unit includes a current sensor for collecting the total incoming current and a voltage sensor for collecting the voltage of each phase of the power grid. The current sensor is equipped with multiple , each current sensor correspondingly collects the total household current of a user; said voltage sensor is provided with at least 4, which are respectively used to collect the household voltage of A, B, C three-phase and zero phase;

The identification host identifies the power consumption and working state of the electric load according to the total incoming current output by the current sensor and the incoming voltage of each phase output by the voltage sensor.

The current sensor is installed on the incoming cable of the electric energy meter of the user.

Preferably, the current sensor adopts an open current sensor or a through-hole current sensor.

Further, the acquisition unit further includes a casing, the voltage sensor is placed in the casing, and a voltage connection terminal connected to the voltage sensor and a current connection terminal connected to the current sensor are also provided in the casing.

Further, the collection unit or current sensor is set in the entrance switch room.

Further, the identification host is placed in the case of the electric energy meter of the user.

Further, a three-phase air switch is provided between the collection unit and the household grid.

Preferably, the collection unit includes at least 9 current sensors, correspondingly collecting the total incoming current of at least 9 users.

Compared with the prior art, the beneficial effects achieved by the utility model are:

The non-invasive measurement device is installed in/near the user's meter box, which can completely avoid intrusion into residents' homes for construction, with little difficulty in installation and transformation, low cost, and easy large-scale promotion;

One collection unit can collect the total current of multiple users at the same time, which has a high degree of integration and helps to further reduce construction and maintenance costs.

Description of drawings

Fig. 1 is the schematic circuit diagram of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.

As shown in Figure 1, it is a schematic circuit diagram of the utility model, including a master station system, an identification host, and an acquisition unit. There are multiple voltage sensors and current sensors, and each current sensor corresponds to collecting the total current of a user. There are at least four voltage sensors arranged in the casing, which are used to collect the input voltage of A, B, C three phases and zero phase respectively. The housing of the acquisition unit is also provided with a voltage connection terminal for connecting the voltage sensor and a current connection terminal for connecting the current sensor.

The current sensor is installed on the incoming cable of the user's electric energy meter to identify that the host takes power from the incoming line of the user's electric energy meter, and the power consumption is included in the network loss. The current sensor can be equipped with an open current sensor to support construction without power failure, and there is no need for power failure during the whole process. Users can also choose a through-hole current sensor, which has higher measurement accuracy and requires a short power outage for installation.

When working, the acquisition unit communicates with the identification host through the D516 mode, and the identification host identifies the power consumption and working status of the electric load based on the total incoming current output by the current sensor and the incoming voltage of each phase output by the voltage sensor, without any need for the user to provide The type and power information of the electrical appliance is analyzed and calculated by the identification host to generate a daily electricity sequence <appliance type, start-stop period, power consumption>, which supports complete non-intrusive identification, and finally the identification host sends the identification result to the master station through GPRS communication system. The recognition of the electrical power and working status of the electrical load by the identification host according to the total incoming current and incoming voltage belongs to the prior art, and the utility model does not involve the improvement and innovation of software programs.

The utility model adopts the distributed installation of the identification host and the acquisition unit, and can be completely constructed without power failure. The specific steps are as follows:

In the first step, the acquisition unit is preferably installed inside the entrance switch room, and installed near the entrance switch room if there is not enough space;

In the second step, the identification host is preferably installed inside the user's electric energy meter box, and installed on the wall near the meter box if there is not enough space;

Step 3: Install the open current sensor inside the entrance switch room, install the current sensor on the incoming cable of each user, and fasten it with a wire tie;

Step 4: Collect the three-phase voltage through the branch terminal under the main switch of the electric energy meter box, and supply power to the device at the same time, and install a three-phase air switch between the power grid and the voltage sensor;

Step 5, start to identify the host and debug.

The installation position of the non-invasive measuring device of the utility model can be selected at the user's electric meter box, and it will not invade the residents' indoors for construction at all, and even can not interrupt the user's power supply, will not cause the user's resistance, and is easy to be accepted by the user.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and deformations can also be made. And deformation should also be regarded as the protection scope of the present utility model.

Claims (8)

1. A non-intrusive measurement device for sampling and identification distributed installation, including an identification host and an acquisition unit communicatively connected with the identification host, and the identification host performs electrical power and working status identification of electric loads based on electrical signals collected by the acquisition power supply , characterized in that the collection unit includes a current sensor for collecting the total incoming current and a voltage sensor for collecting the voltage of each phase of the power grid, and there are multiple current sensors, and each current sensor corresponds to collecting a user's Total household current; said voltage sensor is provided with at least 4, which are respectively used to collect the household voltage of A, B, C three-phase and zero phase; The identification host identifies the power consumption and working state of the electric load according to the total incoming current output by the current sensor and the incoming voltage of each phase output by the voltage sensor. 2. The non-invasive measurement device for sampling and identification distributed installation according to claim 1, wherein the current sensor is installed on the incoming cable of the electric energy meter of the user. 3. The non-invasive measurement device for distributed installation of sampling and identification according to claim 1 or 2, characterized in that the current sensor is an open current sensor or a through-hole current sensor. 4. The non-invasive measurement device for sampling and identification distributed installation according to claim 3, characterized in that, the acquisition unit also includes a housing, the voltage sensor is placed in the housing, and the housing is also provided with Connect the voltage terminal to the voltage sensor and the current terminal to the current sensor. 5 . The non-invasive measurement device for distributed installation of sampling and identification according to claim 3 , wherein the collection unit or the current sensor is set in the entrance switch room. 6 . 6. The non-intrusive measurement device for distributed installation of sampling and identification according to claim 3, characterized in that, the identification host is placed in the case of the electric energy meter of the user. 7. The non-invasive measurement device for sampling and identification distributed installation according to claim 3, characterized in that a three-phase air switch is provided between the collection unit and the household grid. 8. The non-intrusive measurement device for sampling and identification distributed installation according to claim 3, wherein the collection unit includes at least 9 current sensors, correspondingly collecting the total incoming current of at least 9 users.