How to judge the load and power flow of the operating equipment?

The maximum load is the sum of the power consumption of all the electrical equipment in your enterprise, and there is a problem with the simultaneous rate, if all your equipment is running at the same time in a certain period of time, then the simultaneous rate is 100%. The maximum load is generally not reached, and the power supply company knows that this is an extreme situation, if each enterprise reaches the maximum load at the same time, the carrying capacity of the upper line and the transformer is enough.

Power flow calculation is a basic electrical calculation to study the steady-state operation of the power system. Its task is to determine the operating state of the entire system according to the given operating conditions and network structure, such as the voltage (amplitude and phase angle) on each bus, the power distribution in the network, and the power loss. The results of power flow calculation are the basis for power system stability calculation and fault analysis.

The load of the operating equipment is calculated using the required coefficient method, while the power flow is calculated using the power flow calculation formula.

If the equipment is full or less than the load, it needs to be calculated according to the load rate of the equipment. Add up the power of all the devices.

In the process of judging the load and power flow of the operating equipment, you should buy a multimeter for actual measurement.

You can install current detection.

Fit to enlarge. The current will increase.

This is a positive correlation.

How do we judge the role of the operating load of the machine, it depends on its noise, if the noise is louder, it means that its power is greater.

It should be used and maintained correctly according to the production certificate and instruction manual of the equipment.

How to judge that the operating equipment conforms to the mechanical trend is to make corresponding judgments according to the characteristics and characteristics of some contemporary trends.

How to judge the load and power flow of the operating equipment? I think there should be a detailed introduction in Suning's book if you look at it.

What kind of society you are talking about is detailed, and the questions asked are detailed.

How to put the running equipment abdominal muscles and the trend of the specific negative aspect of some equipment of some trends, you should pay more attention to some good reviews on the Internet, learn more about this information, and look for more books to see.

Power flow is the technical term of BAI electric power, and power flow is the meaning of current du and power transmission.

The direction of the power flow DAO is always directed towards the load specific.

In some complex.

When the ring network system is calculated, the direction of the power flow of some lines is determined according to the calculated "power equinox".

In the actual operation of the power system, each line has an ammeter and a power meter, and the direction of the power flow can be known at a glance.

The load is relative to the power supply, and it is the electrical equipment that consumes power, such as resistive load, inductive load, capacitive load, etc.

Power flow refers to the power that actually flows through a transmission line, including active and reactive power. If there is only one supply line for a load, then the power of the load is equal to the power flow of the line (ignoring the network loss).

Power can be active power, reactive power, or apparent power.

Apparent power: voltage multiplied by current conjugate (e.g. 3 4i kva) Active power: The real part of apparent power (3 kva).

Reactive power: the imaginary part of the apparent power (4 kva).

Use a clamp ammeter.

Measure the current of the sock collapse motor close to the fixed value of the forehead indicated on the cavity plate, that is, near the full load.

When the voltage is rated and the working current is equal to the rated current, the motor is close to full load operation.

There are two concepts of full load:

1. When the running current measured by the clamp ammeter is equal to or close to the rated current of the motor, it means that the rated load of the motor is reached, that is, the motor is at full load.

2. Know that the equipment driven by the motor needs to be dusted to keep an eye on the noise coefficient and tangent value, and convert and calculate the current. When the measured current reaches the calculated current, the full load of the operating torque of the device is considered to have been reached.

The power flow of the system is the power flow in the power network.

BAI power distribution (current distribution) of each line of the source. Through power flow calculation, we can understand the load distribution of each line, prevent some lines from being overloaded, and some lines from being lightly loaded, ensuring the static stability of the system, and making full use of power grid resources through the adjustment of operation mode.

That's so professional...

Power flow is the voltage and power on each node, each section of the line, and each transformer.

Why? Because the exam will be taken, hahaha.

Power flow is the steady-state distribution of voltage (nodes) and power (active, reactive) (branches) in the power system.

The distribution of power flow is a matter that must be known by the operation scheduling unit and the maintenance department.

Power flow calculation refers to the assumption of initial values in some parameters, known values and unknown values in a given power grid, and finally finds the exact value of power flow distribution through repeated iterations, and the common methods are Newton-Raphson method and PQ decomposition method.

On the generator bus, power is injected into the network; and access the load on the substation (distribution); In the meantime, power flows through the network. For this flow of power, the power generation sector is called power flow.

Power flow in the power system refers to the steady-state distribution of voltage at each node in the power grid, active power on the line, and reactive power.

The power flow referred to by our power company refers to the process of calculating the voltage of each node in the power grid, or the active power and reactive power on the line through some given conditions.

I wish you good health and happiness for your family. A good man has a safe life!

The distribution of active power and reactive power during the steady-state operation of the power system To put it bluntly, the power flow is the power flow.

The path of power flow is divided into active power flow and reactive power flow, which should be calculated separately.

There is no reactive power flow in the ideal state, so that the loss in the line is smaller, I personally feel that your question is not quite right, the power flow calculation result is to reflect the actual power grid operation state, whether the sail should not have anything to do with the power flow calculation, you have to calculate the power flow according to a certain material stupid trillion parameters and operation data, so as to get the distribution of active and reactive power with car rent, and observe whether it meets your requirements. For example, if you pursue a small network loss, you can get the power flow calculation result through the operation data, and then judge that if it is the smallest, the operation mode is reasonable.

The significance of power flow calculation

Power flow calculation is a basic electrical calculation to study the steady-state operation of the power system, and the task of conventional power flow calculation is to determine the operating state of the whole system according to the given operating conditions and network structure, such as the voltage (amplitude and phase angle) on each bus, the power distribution in the network and the power loss. The results of the power flow calculation are the basis for power system stability calculations and fault analysis.

Specifically, it is manifested in the following aspects:

1) In the power grid planning stage, through power flow calculation, the power supply capacity and access points are reasonably planned, the grid is reasonably planned, and the reactive power compensation scheme is selected to meet the requirements of power flow exchange control, peak regulation, phase regulation and voltage regulation in the large and small modes of the planning level.

2) When compiling the annual operation mode, on the basis of the expected load growth and the commissioning of new equipment, the typical mode is selected to calculate the power flow, find the weak links in the power grid, provide the dispatcher's daily dispatching and control reference, and put forward suggestions for the planning and infrastructure departments to improve the grid structure and speed up the progress of infrastructure.

3) Power flow calculation under normal maintenance and special operation mode, used for the preparation of daily operation mode, to guide the power plant start-up mode, active and reactive power adjustment scheme and load adjustment scheme, to meet the thermal stability requirements and voltage quality requirements of lines and transformers.

4) Analyze the impact of the expected accident and equipment withdrawal on static safety and make the expected operation mode adjustment plan.

The history of power flow computing The use of electronic computers for power flow calculation began in the mid-50s of the 20th century. Since then, various methods have been used for power flow calculations, and the development of these methods has mainly revolved around some basic requirements for power flow calculations. The requirements for power flow calculation can be summarized as follows:

1) Reliability or convergence of the algorithm.

2) Computing speed and memory footprint.

3) Ease and flexibility of calculation.

When the power system is running, under the action of power supply potential excitation, the current or power flows into the load from the power supply through various components of the system, and is distributed in various places of the power grid, which is called power flow cloth.