MICRO-GRID INTEGRATED ENERGY MANAGEMENT

A micro-grid is a small-scale power generation and distribution system comprising distributed sources, energy storage, conversion devices, loads, and monitoring/protection equipment. Typically, it operates in parallel with the conventional grid (grid-connected mode); when the main grid is inaccessible, it seamlessly switches to independent operation to ensure continuous power supply.

Leveraging strengths in intelligent grid equipment manufacturing and smart software development, Huaxiang Xiangneng delivers comprehensive services—including micro-grid construction, O&M trusteeship, photovoltaic supply, and energy transfer. Through self-generation, surplus feeding, capacity adjustment, and load shifting, we help clients reduce electricity costs, minimize outage losses, resolve consumption issues, and lower O&M expenses.

MICRO-GRID INTRODUCTION

Micro-grid, also called micro-network, refers to a small-scale power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices, etc. The micro-grid aims to achieve the flexible and efficient application of distributed power sources and solve the grid connection problems of a large number of diverse distributed power sources. The development and extension of micro-grids can fully promote the large-scale access of distributed power sources and renewable energy, achieve a highly reliable supply of multiple energy forms for loads, and provide an effective way to realize an active distribution grid, facilitating the transition of the traditional power grid to a smart grid.

THE APPLICATION CASE OF MICRO-GRID

The company invests in and constructs micro-grid power stations tailored to customer locations, operating in parallel with the conventional distribution grid. Upon grid failure or power quality anomalies, the micro-grid seamlessly switches to island mode for independent operation. Without increasing initial costs, the micro-grid enhances power supply reliability and enables customers to consume energy at a discounted grid price (e.g., 92% of the standard rate).

Case Study:

500 kWp Photovoltaic Integration

A corporate PV station (500 kWp, avg. monthly generation: 37,506.25 kWh) prioritizes on-site PV consumption at a discounted rate (8% discount vs. State Grid price). Additional fees apply for original consumption modes (including PV generation). The client saves approx. 4,000 Yuan monthly (see table for generation and savings details).

Distributed Generation Data

Month	Total Electricity Bill (Yuan)	PV Generation (kWh)	Bill Saved (Yuan)	Actual Bill Paid (Yuan)
Jan.	99064.62	20759	1992.92	97071.70
Feb.	62183.65	23265	2231.10	59952.55
Mar.	72041.60	25902	2483.99	69557.61
Apr.	81407.51	36175	3852.68	77554.83
May	84993.93	47483	4553.60	80440.23
Jun.	86359.55	46005	4396.76	81963.23
Jul.	89140.12	59363	5535.02	83453.36
Aug.	108675.50	57779	4314.25	103140.48
Sep.	96852.35	45044	3441.14	92538.10
Oct.	91420.47	35928	2757.28	87979.33
Nov.	90923.53	28788	4396.32	88166.25
Dec.	91330.34	23584	2258.84	89071.50
Total	1054393.07	450075	43503.91	1010889.17

INTEGRATED ENERGY ADVANTAGES

Safe Energy Use

The energy efficiency system performs 24/7 real-time measurement, detection, and management of multi-energy consumption. Our real-time alarm monitoring hall identifies abnormalities, notifies customers, and executes remote control (with consent) to prevent electrical fires.

Professional O&M teams ensure equipment health, extending asset lifespan. During outages, we provide emergency repairs and short-term power supply guarantee to sustain production.

Energy Conservation

Leveraging IoT, the system enables fine metering, real-time monitoring, and dynamic control of water, electricity, and gas. It generates trend analysis and monthly reports, prompting checks on abnormal usage to save energy.

Integrated with attendance/access control, it achieves “power on/off with presence.” Customers enjoy discounted electricity and zero-cost O&M via our EPC model. We guarantee power efficiency and cover reactive power compensation fines on behalf of clients.

SERVICE PROCESS

ENERGY SERVICE CONTENT

Equipment Inspection, Overhaul and Report	1. Conduct an inspection of the distribution equipment within the service range once a month. The system records relevant inspection data and sends real-time text messages before and after each inspection operation.
	2. Systematically record the electrical defects or potential safety hazards found during the inspection according to the defect handling level and carry out planned maintenance.
	3. Conduct maintenance work on the distribution equipment within the service range free of labor costs (the customer is responsible for the material costs).
	4. Make rectifications free of labor costs for the equipment defects within the service range pointed out by the power-managing department during safety inspections (excluding civil construction).
	5. Issue a “Safety Operation and Maintenance Report” every month and provide a safe electricity application strategy.
	6. Repair faults and handle accidents of the distribution equipment free of labor costs.
Annual Maintenance	1. Conduct power-off maintenance and standby equipment switching tests on the distribution equipment within the service range no less than once a year to keep the equipment in a safe and reliable state.
	2. Dust-clean the equipment components in the transformers and power distribution cabinets, and check and tighten the screws of the primary and secondary connection parts of each circuit.
	3. Lubricate the switch operation transmission mechanism.
	4. Check and seal the cable entry and exit holes in the power distribution cabinets and the gaps between the cabinets to prevent small animals from getting into the energized equipment and causing electrical accidents.

MICRO-GRID INTEGRATED ENERGY MANAGEMENT