Ammeter metering device for household energy storage system

Abstract

The utility model discloses an ammeter metering device used for a household energy storage system, comprising an N phase, an L1 phase, an L2 phase, a current transformer and an electric energy meter U1, the N phase is electrically connected with the N end of the electric energy meter U1, the L1 phase is electrically connected with the L1 end of the electric energy meter U1, and the L2 phase is electrically connected with the L2 end of the electric energy meter U1. The current transformer is connected with the CT end of the electric energy meter U1, and the current transformer comprises a transformer CT-L1, a transformer CT-L2, a transformer CT-B1 and a transformer CT-B2. According to the ammeter metering device for the household energy storage system disclosed by the utility model, one electric energy meter can be used for simultaneously detecting the electric quantity of a main circuit and the electric quantity of a branch circuit, so that the purpose of more accurate metering and positioning is achieved, and meanwhile, the installation cost of detecting the electric quantity of a specific load only through a plurality of electric energy meters is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electric meter measurement technical field, concretely relates to a kind of electric meter measurement device for domestic energy storage system. BACKGROUND

[0002] The domestic energy storage system can be regarded as a micro energy storage power station, and its operation is not affected by the urban power supply pressure. During the low electricity consumption period, the battery pack in the domestic energy storage system can be automatically charged to meet the needs of power peak or power failure. In addition to serving as an emergency power supply, the domestic energy storage system can also help balance the household electricity load, thereby saving the household electricity expenditure.

[0003] With the rapid development of the intelligent and information age, the global electricity demand is showing explosive growth. This growth not only brings challenges to energy supply, but also exacerbates environmental pollution and energy consumption. Under this background, photovoltaic power generation, as a clean and green power generation method, is gradually favored by the world. However, the existing measurement scheme can only measure the overall electricity consumption on the main line, but cannot measure the branch electricity, making it impossible for customers to accurately detect the specific electricity consumption of a certain branch. Therefore, a multifunctional electric meter measurement scheme that can separately detect the main line and branch is particularly important. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide an electric meter measurement device for domestic energy storage system, which detects the branch through each mutual inductor, so that one electric energy meter can detect the main line electricity and branch electricity, achieving more accurate measurement positioning, and reducing the installation cost of detecting the electricity of a specific load through multiple electric energy meters.

[0005] To achieve the above purpose, the utility model discloses an electric meter measurement device for domestic energy storage system, which comprises N phase, L1 phase, L2 phase, current transformer and electric energy meter U1, wherein:

[0006] The N phase and the L1 phase are connected with parallel-connected load S1 and load S2, and the N phase and the L2 phase are connected with parallel-connected load S3 and load S4;

[0007] The N phase is electrically connected with the N end of the electric energy meter U1, the L1 phase is electrically connected with the L1 end of the electric energy meter U1, and the L2 phase is electrically connected with the L2 end of the electric energy meter U1 (for detecting the voltage of L1 and L2);

[0008] The current transformer is connected with the CT end of the electric energy meter U1, and the current transformer comprises a transformer CT-L1, a transformer CT-L2, a transformer CT-B1 and a transformer CT-B2, the transformer CT-L1 is installed on the total line of the L1 phase, the transformer CT-L2 is installed on the total line of the L2 phase, the transformer CT-B1 is installed on the branch line of the load S1 or the load S2, and the transformer CT-B2 is installed on the branch line of the load S3 or the load S4.

[0009] As a further preferred technical solution of the above technical solution, the transformer CT-L1 is used for detecting the total current of the load S1 and the load S2 in the L1 phase, the transformer CT-L2 is used for detecting the total current of the load S3 and the load S4 in the L2 phase, the transformer CT-B1 is used for detecting the branch current of the load S1 or the load S2 in the L1 phase, and the transformer CT-B2 is used for detecting the branch current of the load S3 or the load S4 in the L2 phase.

[0010] As a further preferred technical solution of the above technical solution, the electric energy meter U1 is further provided with a reset key (Reset).

[0011] As a further preferred technical solution of the above technical solution, the electric energy meter U1 is further provided with a power indicator light (Power).

[0012] As a further preferred technical solution of the above technical solution, the electric energy meter U1 is further provided with a communication indicator light (Wi-Fi and RS485). BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by those skilled in the art. The basic principles of the utility model defined in the following description can be applied to other implementation schemes, variant schemes, improved schemes, equivalent schemes and other technical solutions without departing from the spirit and scope of the utility model.

[0015] The utility model discloses a kind of electric meter measuring device for domestic energy storage system, below Preferred Embodiment is further described to the specific embodiment of utility model, with the preferred embodiment of the utility model.

[0016] In the embodiment of the utility model, those skilled in the art pay attention, electric energy meter etc. related by the utility model can be regarded as prior art.

[0017] Preferred embodiments.

[0018] The utility model discloses a watt-hour meter measuring device for domestic energy storage system, including N phase, L1 phase, L2 phase, current transformer and electric energy meter U1, wherein:

[0019] The N phase and the L1 phase are connected with the parallel connection load S1 and the load S2, and the N phase and the L2 phase are connected with the parallel connection load S3 and the load S4.

[0020] The N phase is electrically connected with the N end of the electric energy meter U1, the L1 phase is electrically connected with the L1 end of the electric energy meter U1, and the L2 phase is electrically connected with the L2 end of the electric energy meter U1 (for detecting the voltage of L1 and L2 two phases).

[0021] The current transformer is connected with the CT end of the electric energy meter U1, and the current transformer includes the transformer CT-L1, the transformer CT-L2, the transformer CT-B1 and the transformer CT-B2, the transformer CT-L1 is installed on the total road of the L1 phase, and the transformer CT-L2 is installed on the total road of the L2 phase, the transformer CT-B1 is installed on the branch of the load S1 or the load S2, and the transformer CT-B2 is installed on the branch of the load S3 or the load S4.

[0022] Specifically, the transformer CT-L1 is used for detecting the total current of the load S1 and the load S2 in the L1 phase, the transformer CT-L2 is used for detecting the total current of the load S3 and the load S4 in the L2 phase, the transformer CT-B1 is used for detecting the branch current of the load S1 or the load S2 in the L1 phase, and the transformer CT-B2 is used for detecting the branch current of the load S3 or the load S4 in the L2 phase.

[0023] More specifically, the electric energy meter U1 is also provided with a reset key (Reset).

[0024] Further, the electric energy meter U1 is also provided with a power indicator light (Power).

[0025] Further, the electric energy meter U1 is also provided with a communication indicator light (Wi-Fi and RS485).

[0026] For the utility model:

[0027] From the above Figure 1It can be seen that S1, S2, S3 and S4 are household loads, CT-L1 is used for detecting the total current of S1, S2 and the like in L1 phase, CT-L2 is used for detecting the total current of S3, S4 and the like in L2, CT-B1 is used for detecting the branch current of the load S2 in L1 phase, and CT-B2 is used for detecting the branch current of the load S4 in L2 phase. CT-L1, CT-L2, CT-B1 and CT-B2 jointly synthesize a mutual inductor connected to the inside of the electric energy meter, and the electric meter detects the voltages of L1 and L2 phases, thereby calculating the total power of L1 and L2 phases and the branch power of S2 and S4 specific loads. Through the improvement scheme, the specific load power can be more accurately measured, and the customer can clearly understand which load consumes more or less power, and the use of electric energy can be better controlled.

[0028] It is worth mentioning that the technical features of the electric energy meter and the like involved in the utility model patent application should be regarded as prior art, and the specific structure, working principle and possible control mode and spatial arrangement mode of these technical features can be selected by using the conventional selection in the field, and should not be regarded as the invention point of the utility model patent, and the utility model patent will not be further expanded and described in detail.

[0029] For those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, and any modification, equivalent replacement, improvement and the like within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A metering device for a domestic energy storage system, characterized in that It comprises N phase, L1 phase, L2 phase, current transformer and electric energy meter U1, wherein: The N phase and the L1 phase are connected with parallel connected load S1 and load S2, and the N phase and the L2 phase are connected with parallel connected load S3 and load S4; The N phase is electrically connected with N terminal of the electric energy meter U1, the L1 phase is electrically connected with L1 terminal of the electric energy meter U1, and the L2 phase is electrically connected with L2 terminal of the electric energy meter U1; The current transformer is connected with CT terminal of the electric energy meter U1, and the current transformer comprises transformer CT-L1, transformer CT-L2, transformer CT-B1 and transformer CT-B2, the transformer CT-L1 is installed on the total circuit of the L1 phase, the transformer CT-L2 is installed on the total circuit of the L2 phase, the transformer CT-B1 is installed on the branch circuit of the load S1 or the load S2, and the transformer CT-B2 is installed on the branch circuit of the load S3 or the load S4.

2. A metering device for a home energy storage system according to claim 1, characterized in that, The transformer CT-L1 is used for detecting total current of the load S1 and the load S2 in the L1 phase, the transformer CT-L2 is used for detecting total current of the load S3 and the load S4 in the L2 phase, the transformer CT-B1 is used for detecting branch current of the load S1 or the load S2 in the L1 phase, and the transformer CT-B2 is used for detecting branch current of the load S3 or the load S4 in the L2 phase.

3. A metering device for a home energy storage system according to claim 1, wherein, The electric energy meter U1 is further provided with a reset key.

4. A metering device for a home energy storage system according to claim 1, wherein, The electric energy meter U1 is further provided with a power indicator.

5. A metering device for a home energy storage system according to claim 1, wherein, The electric energy meter U1 is further provided with a communication indicator.

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