【overview】Zhongke Xinyi is a high-tech enterprise integrating high-voltage testing and testing equipment, power metering instruments, battery DC system testing, power online monitoring system research and development, production, sales, consulting and power technology services. Independent advantage products: ZEC series relay protection tester.

Zhongke Xinyi is a high-tech enterprise integrating high-voltage testing and testing equipment, power metering instruments, battery DC system testing, power online monitoring system research and development, production, sales, consulting and power technology services. Independent advantage products: ZEC series relay protection tester.

1. The risk management and control of power grid operation should be strengthened, the risk assessment of maintenance methods should be carried out, the regulatory department should issue the early warning of power grid operation risk in advance, and each unit should be responsible for implementing the pre-control measures.

2. We should attach great importance to the safety control under the mode of single incoming line or single main transformer or single bus, and take preventive measures in advance to prevent the total shutdown of substation.

3. To strengthen the maintenance and maintenance management under the maintenance mode, the requirements are as follows:

4. If the total shutdown of the substation may cause power grid events of Grade 5 and above, the local and municipal companies (provincial maintenance companies) shall formulate risk control measures and submit them to the provincial companies for approval and release.

5. Maintenance, construction site should implement the leading cadres and management personnel to the post in place system, level 5 and above safety risk city company (provincial maintenance company) transportation inspection, safety supervision and other leaders and management personnel to the post in place; Depending on the complexity of the work and the degree of impact of the failure, the provincial company transportation inspection, safety supervision and other leaders and management personnel to the post in place; Leaders and management personnel are not allowed to start work.

6. Before the power failure, the operation and maintenance unit shall formulate a special patrol and special protection plan for power transmission and transformation equipment, and organize and carry out a special patrol for single incoming line, single main transformer and single bus equipment, infrared temperature measurement, defect elimination and hidden danger investigation and management.

7. During the power outage, the unattended substation shall temporarily resume the operation and maintenance of the station according to the work needs, and conduct special inspections of the power protection equipment three times a day, focusing on inspections of the main transformer, bus, station power, DC system, etc. and infrared temperature measurement; The power protection line shall be inspected once a day, and special personnel shall be assigned to guard the high-incidence sites outside the fire-prone areas.

As a provider of power test equipment, Wuhan Zhongke Power has the obligation and responsibility to make China's power industry more perfect and provide reliable products and knowledge for the majority of power people.

Method of Preventing Substation Full Shutdown Caused by Incomplete Grid Structure

Wuhan Zhongke Electric Power to prevent maintenance, renovation and expansion of the construction of the substation caused by the total shutdown of the method.

Method of Preventing Substation Full Shutdown Caused by Incomplete Grid Structure

Wuhan Zhongke Electric Power to prevent maintenance, renovation and expansion of the construction of the substation caused by the total shutdown of the method.

2023-12-29

Talk about the principle and function of variable frequency series resonant voltage withstand test equipment

Variable frequency series resonant withstand voltage test equipment is mainly used for AC withstand voltage test of cross-linked cable, hydraulic generator, main transformer, bus, GIS and so on. It is composed of variable frequency control power supply, excitation transformer, reactor, capacitor voltage divider and compensation capacitor. Because the voltage, waveform and frequency and the electric field state inside the insulation of the tested object are consistent with the actual operation, and the test voltage is higher than the actual operation voltage, therefore, the insulation strength is strict, direct and effective method.

2024-01-26

Overview of Operation Test of Electrical High Voltage Test Equipment

In addition to the long-term operation under rated voltage, the power generation, supply and consumption equipment in the power system must have the insulation strength under overvoltage. Overvoltage refers to the voltage rise that exceeds the normal operating voltage, which is the damage of electrical equipment or protective equipment. In all kinds of power system accidents, a large part is caused by the insulation damage of equipment caused by overvoltage. When the insulation is defective, if it is not found and eliminated in time, it will eventually lead to equipment damage and power failure.

2024-01-13

Characteristics of gas-filled test transformer

The inflatable test transformer is a brand-new test equipment, which adopts the characteristics of GIS combination cabinet, with small quality, light volume and beautiful appearance. Its technical indicators have reached the standard requirements, high insulation strength, compressive strength for the same pressure of nitrogen 2.5 times, 2.5 times the breakdown voltage of air. It is equal to the breakdown voltage of oil at 0.25MPa and twice the breakdown voltage of oil at 0.45MPa.